subject:(Power amplifier)

Texas A&M University

1. Qian, Haoyu. Analysis and Design of CMOS Radio-Frequency Power Amplifiers.

Degree: PhD, Electrical Engineering, 2017, Texas A&M University

URL: http://hdl.handle.net/1969.1/161560

► The continuous advancement of semiconductor technologies, especially CMOS technology, has enabled exponential growth of the wireless communication industry. This explosive growth in turn has completely… (more)

▼ The continuous advancement of semiconductor technologies, especially CMOS technology, has enabled exponential growth of the wireless communication industry. This explosive growth in turn has completely changed people’s lives. The CMOS feature size scale down greatly benefits digital logic integrations, which result in more powerful, versatile, and economical digital signal processing. Further research and development has pushed analog, mixed-signal, and even radio-frequency (RF) circuit blocks to be implemented and integrated in CMOS. Future generations of wireless communication call for even further level of integration, and as of now, the only circuit block that is rarely integrated in CMOS along with other parts of the system is the power amplifier (PA). Due to the fact that the PA in a wireless communication system is the most power-hungry circuit block, the integration of RF PA in CMOS would potentially not only save the cost of the wireless communication system real estate, but also reduce power consumption since die-to-die connection loss can be eliminated. RF PA design involves handling large amounts of voltage and current at the radio frequencies, which in the present wireless communication standards are in the range of giga-hertz. Therefore, a good understanding of many aspects related to RF PA design is necessary. Theoretical analysis of the communication system, nonlinear effects of the PA, as well as the impedance matching network is systematically presented. The analysis of the nonlinear effects proposes a formal mathematical description of the multitone nonlinearity, and through its relationship with two-tone test, the proposed PA design methodology would greatly reduce the design time while improving the design accuracy. A thorough analysis of the available architecture and design techniques for efficiency and linearity enhancement of RF PA shows that despite tremendous amounts of research and development into this topic, the fundamental tradeoff between the two still limits the RF PA implementation largely within SiGe, GaAs, and InP technologies. A RF PA for Wideband Code-Division Multiple Access (WCDMA) application standard is proposed, designed, and implemented in CMOS that demonstrates the proposed segmentation technique that resolved the main tradeoff between power efficiency and linearity. The innovative architecture developed in this work is not limited to applications in the WCDMA communication protocol or the CMOS technology, although CMOS implementation would take advantage of the readily available digital resources. Advisors/Committee Members: Silva-Martinez, Jose (advisor), Karsilayan, Aydin (committee member), Li, Peng (committee member), Walker, Duncan M (committee member).

Subjects/Keywords: RF; Power amplifier

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APA (6^th Edition):

Qian, H. (2017). Analysis and Design of CMOS Radio-Frequency Power Amplifiers. (Doctoral Dissertation). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/161560

Chicago Manual of Style (16^th Edition):

Qian, Haoyu. “Analysis and Design of CMOS Radio-Frequency Power Amplifiers.” 2017. Doctoral Dissertation, Texas A&M University. Accessed March 01, 2021. http://hdl.handle.net/1969.1/161560.

MLA Handbook (7^th Edition):

Qian, Haoyu. “Analysis and Design of CMOS Radio-Frequency Power Amplifiers.” 2017. Web. 01 Mar 2021.

Vancouver:

Qian H. Analysis and Design of CMOS Radio-Frequency Power Amplifiers. [Internet] [Doctoral dissertation]. Texas A&M University; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1969.1/161560.

Council of Science Editors:

Qian H. Analysis and Design of CMOS Radio-Frequency Power Amplifiers. [Doctoral Dissertation]. Texas A&M University; 2017. Available from: http://hdl.handle.net/1969.1/161560

2. SUN, JINGJIE. Audio power amplifier design.

Degree: Mathematics and Natural Sciences, 2011, University of Gävle

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-9761

► The audio power amplifier is used to amplify low-power audio signals to a level that can be suitable for driving the loudspeakers. Thus the… (more)

Subjects/Keywords: audio power amplifier

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APA (6^th Edition):

SUN, J. (2011). Audio power amplifier design. (Thesis). University of Gävle. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-9761

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

SUN, JINGJIE. “Audio power amplifier design.” 2011. Thesis, University of Gävle. Accessed March 01, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-9761.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

SUN, JINGJIE. “Audio power amplifier design.” 2011. Web. 01 Mar 2021.

Vancouver:

SUN J. Audio power amplifier design. [Internet] [Thesis]. University of Gävle; 2011. [cited 2021 Mar 01]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-9761.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

SUN J. Audio power amplifier design. [Thesis]. University of Gävle; 2011. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-9761

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

3. Hussain, Raza. Highly Integrated Wideband Doherty Power Amplifier.

Degree: 2013, , School of Engineering

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3065

►

The objective of this thesis project was to design a wide band Doherty Power Amplifier (DPA) using bare die transistors. Different techniques had been… (more)

Subjects/Keywords: Doherty power amplifier; GaN transistor; power amplifier; wideband power amplifier

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APA (6^th Edition):

Hussain, R. (2013). Highly Integrated Wideband Doherty Power Amplifier. (Thesis). , School of Engineering. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3065

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Hussain, Raza. “Highly Integrated Wideband Doherty Power Amplifier.” 2013. Thesis, , School of Engineering. Accessed March 01, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3065.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Hussain, Raza. “Highly Integrated Wideband Doherty Power Amplifier.” 2013. Web. 01 Mar 2021.

Vancouver:

Hussain R. Highly Integrated Wideband Doherty Power Amplifier. [Internet] [Thesis]. , School of Engineering; 2013. [cited 2021 Mar 01]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3065.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Hussain R. Highly Integrated Wideband Doherty Power Amplifier. [Thesis]. , School of Engineering; 2013. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:bth-3065

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Delft University of Technology

4. Li, J. (author). Wideband High Power Amplifier Design.

Degree: 2011, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:fdf758f2-ea47-44a5-b384-806464750dee

►

This thesis aims for high power wideband amplifiers suitable for base station instrumentation purposes. A power combing topology is introduced, not only to achieve high… (more)

Subjects/Keywords: power amplifier; high power; wideband

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APA (6^th Edition):

Li, J. (. (2011). Wideband High Power Amplifier Design. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:fdf758f2-ea47-44a5-b384-806464750dee

Chicago Manual of Style (16^th Edition):

Li, J (author). “Wideband High Power Amplifier Design.” 2011. Masters Thesis, Delft University of Technology. Accessed March 01, 2021. http://resolver.tudelft.nl/uuid:fdf758f2-ea47-44a5-b384-806464750dee.

MLA Handbook (7^th Edition):

Li, J (author). “Wideband High Power Amplifier Design.” 2011. Web. 01 Mar 2021.

Vancouver:

Li J(. Wideband High Power Amplifier Design. [Internet] [Masters thesis]. Delft University of Technology; 2011. [cited 2021 Mar 01]. Available from: http://resolver.tudelft.nl/uuid:fdf758f2-ea47-44a5-b384-806464750dee.

Council of Science Editors:

Li J(. Wideband High Power Amplifier Design. [Masters Thesis]. Delft University of Technology; 2011. Available from: http://resolver.tudelft.nl/uuid:fdf758f2-ea47-44a5-b384-806464750dee

University of North Texas

5. Shao, Jin. Advanced Power Amplifiers Design for Modern Wireless Communication.

Degree: 2015, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc804973/

► Modern wireless communication systems use spectrally efficient modulation schemes to reach high data rate transmission. These schemes are generally involved with signals with high peak-to-average… (more)

Subjects/Keywords: power amplifier; Doherty amplifier; sequential amplifier; Wireless communication systems.; Power amplifiers.

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APA (6^th Edition):

Shao, J. (2015). Advanced Power Amplifiers Design for Modern Wireless Communication. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc804973/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Shao, Jin. “Advanced Power Amplifiers Design for Modern Wireless Communication.” 2015. Thesis, University of North Texas. Accessed March 01, 2021. https://digital.library.unt.edu/ark:/67531/metadc804973/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Shao, Jin. “Advanced Power Amplifiers Design for Modern Wireless Communication.” 2015. Web. 01 Mar 2021.

Vancouver:

Shao J. Advanced Power Amplifiers Design for Modern Wireless Communication. [Internet] [Thesis]. University of North Texas; 2015. [cited 2021 Mar 01]. Available from: https://digital.library.unt.edu/ark:/67531/metadc804973/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Shao J. Advanced Power Amplifiers Design for Modern Wireless Communication. [Thesis]. University of North Texas; 2015. Available from: https://digital.library.unt.edu/ark:/67531/metadc804973/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

6. Lin, Shih-hao. Linearization of High Power Amplifiers Using Digital Predistortion for WiMAX Basestation Applications.

Degree: Master, Electrical Engineering, 2008, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729108-175628

► This thesis utilizes the digital predistortion technique to improve the linearity of high power amplifiers for WiMAX basestation applications. The power amplifier with the proposed… (more)

Subjects/Keywords: WiMAX; Power Amplifier; Digital Predistortion

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APA (6^th Edition):

Lin, S. (2008). Linearization of High Power Amplifiers Using Digital Predistortion for WiMAX Basestation Applications. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729108-175628

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Lin, Shih-hao. “Linearization of High Power Amplifiers Using Digital Predistortion for WiMAX Basestation Applications.” 2008. Thesis, NSYSU. Accessed March 01, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729108-175628.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Lin, Shih-hao. “Linearization of High Power Amplifiers Using Digital Predistortion for WiMAX Basestation Applications.” 2008. Web. 01 Mar 2021.

Vancouver:

Lin S. Linearization of High Power Amplifiers Using Digital Predistortion for WiMAX Basestation Applications. [Internet] [Thesis]. NSYSU; 2008. [cited 2021 Mar 01]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729108-175628.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Lin S. Linearization of High Power Amplifiers Using Digital Predistortion for WiMAX Basestation Applications. [Thesis]. NSYSU; 2008. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0729108-175628

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Alberta

7. Masud, Muhammad R. Cryogenically Cooled Yb:YAG Ceramic Amplifier Module for High Power Lasers.

Degree: MS, Department of Electrical and Computer Engineering, 2015, University of Alberta

URL: https://era.library.ualberta.ca/files/vh53wz06r

► A new class of direct diode pumped ceramic disk lasers are emerging as attractive candidates for efficient high power amplifiers in industrial and scientific applications.… (more)

Subjects/Keywords: Yb:YAG; Laser Amplifier; High Power

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APA (6^th Edition):

Masud, M. R. (2015). Cryogenically Cooled Yb:YAG Ceramic Amplifier Module for High Power Lasers. (Masters Thesis). University of Alberta. Retrieved from https://era.library.ualberta.ca/files/vh53wz06r

Chicago Manual of Style (16^th Edition):

Masud, Muhammad R. “Cryogenically Cooled Yb:YAG Ceramic Amplifier Module for High Power Lasers.” 2015. Masters Thesis, University of Alberta. Accessed March 01, 2021. https://era.library.ualberta.ca/files/vh53wz06r.

MLA Handbook (7^th Edition):

Masud, Muhammad R. “Cryogenically Cooled Yb:YAG Ceramic Amplifier Module for High Power Lasers.” 2015. Web. 01 Mar 2021.

Vancouver:

Masud MR. Cryogenically Cooled Yb:YAG Ceramic Amplifier Module for High Power Lasers. [Internet] [Masters thesis]. University of Alberta; 2015. [cited 2021 Mar 01]. Available from: https://era.library.ualberta.ca/files/vh53wz06r.

Council of Science Editors:

Masud MR. Cryogenically Cooled Yb:YAG Ceramic Amplifier Module for High Power Lasers. [Masters Thesis]. University of Alberta; 2015. Available from: https://era.library.ualberta.ca/files/vh53wz06r

University of Waterloo

8. Zhang, Yujuan. Experimental Investigation of the Power Amplifiers’ Nonlinearity using a 3.5 GHz 2×2 RF Front-end Prototype.

Degree: 2020, University of Waterloo

URL: http://hdl.handle.net/10012/15477

► Next generation communication systems will demand extremely high system capacity. Ap-proaches such as complex digital modulation schemes, widening of the instantaneous band-width and massive multi-input… (more)

▼ Next generation communication systems will demand extremely high system capacity. Ap-proaches such as complex digital modulation schemes, widening of the instantaneous band-width and massive multi-input multi-output (MIMO) architectures will need to be employed to realize such high capacity systems. However, these approaches impose stringent requirements on the radio hardware. For instance, in conventional wireless transmitters, isolators/circulators are typically used to immunize the radio hardware and its performance from negative effects of the antenna load variation. However, in massive MIMO transmitters, while the antenna active impedance varies significantly, isolators cannot be used due to their unacceptable overhead in terms of cost and space. Thus, within these transmitters the power amplifiers’ (PA) performance in the aspects of linearity, output power and efficiency are significantly impacted by the load modulation introduced by the finite isolation between the antenna elements. To date, studies in the literature have mainly relied on emulating the load modulation in massive MIMO transmit-ters and have used generic PAs rather than those specifically designed for massive MIMO transmission. This work begins by designing a two-by-two RF front-end for a massive MIMO transmitter, comprised of antenna and PA arrays suitable for use in a base station. The antenna array is formed of multilayered patch antenna elements that achieved an enhanced isolation and ex-tended fractional bandwidth of 19 dB and 14%, respectively. The PA array was built using gal-lium nitride transistors and carefully operated in Class J mode. Under continuous wave meas-urements, the PA array element demonstrated high peak-power efficiency of between 54%-66% over the frequency band ranging from 3.2GHz to 3.8GHz. It also showed excellent linear-izability when driven with modulated signals with 200 MHz instantaneous bandwidth. When both the antenna and PA arrays are connected, they form a front-end that was used to study the effects of the antenna load modulation using realistic modulated signals. This study undertook a large set of measurement configurations specifically devised to investigate the effects of cou-pling due to the PA substrate and finite isolation between the antenna elements, as well as the extent of the nonlinearity of the PA elements. Furthermore, a single-input single-output (SISO) digital pre-distortion (DPD) scheme was applied to attempt to linearize the overall response of the PA array. This study revealed that the coupling attributed to the PA substrate had a minor impact on the array’s performance. Furthermore, it highlighted the necessity of jointly designing for both the PA element linearity and the antenna isolation level, so that SISO DPD can be used and MIMO DPD is avoided.

Subjects/Keywords: power amplifier; nonlinearity; MIMO; DPD

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APA (6^th Edition):

Zhang, Y. (2020). Experimental Investigation of the Power Amplifiers’ Nonlinearity using a 3.5 GHz 2×2 RF Front-end Prototype. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/15477

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Zhang, Yujuan. “Experimental Investigation of the Power Amplifiers’ Nonlinearity using a 3.5 GHz 2×2 RF Front-end Prototype.” 2020. Thesis, University of Waterloo. Accessed March 01, 2021. http://hdl.handle.net/10012/15477.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Zhang, Yujuan. “Experimental Investigation of the Power Amplifiers’ Nonlinearity using a 3.5 GHz 2×2 RF Front-end Prototype.” 2020. Web. 01 Mar 2021.

Vancouver:

Zhang Y. Experimental Investigation of the Power Amplifiers’ Nonlinearity using a 3.5 GHz 2×2 RF Front-end Prototype. [Internet] [Thesis]. University of Waterloo; 2020. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10012/15477.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Zhang Y. Experimental Investigation of the Power Amplifiers’ Nonlinearity using a 3.5 GHz 2×2 RF Front-end Prototype. [Thesis]. University of Waterloo; 2020. Available from: http://hdl.handle.net/10012/15477

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of California – San Diego

9. Diddi, Varish. Digitally Controlled Microwave Power Amplifier Design Techniques for Wireless Communications.

Degree: Electrical Engineering (Electronic Circuits and Systems), 2017, University of California – San Diego

URL: http://www.escholarship.org/uc/item/3h72p8f9

► In order to meet the increasing demand of high data rate mobile broadband communication, newer standards increasingly employ spectrally efficient high order modulation schemes, which… (more)

▼ In order to meet the increasing demand of high data rate mobile broadband communication, newer standards increasingly employ spectrally efficient high order modulation schemes, which lead to large peak-to-average ratio (PAPR) of transmitted signals. To drive down the cost and form factor, a significant portion of the active circuitry in today's commercial handsets is implemented in silicon CMOS technology – except for the power amplifier (PA). Silicon technology comes with low breakdown voltage, however, limiting the output power of the PA. Recent work has shown that series-connection of Si FETs (the "Stacked-FET" technique) can overcome the breakdown issue of silicon CMOS FETs to implement high power PAs. This can enable the use of scaled CMOS technology nodes which are optimized for digital logic circuits, to implement high performance PAs. The PAs, moreover, can make use of the digital circuits available to produce compact integrated circuits that are less dependent on microwave matching techniques than their counterparts. This work investigates the design and implementation of high output power, digitally-intensive PA CMOS architectures and their extensions for wireless transmitters that are highly efficient, even for signals with high peak-to-average ratio.In the first part of this work, a digitally modulated PA (DPA) is implemented in polar architecture on 180 nm CMOS SOI technology. The amplitude modulation input signal is a 10-bit digital word controlling the number of active unit cells – each unit cell being a stacked FET PA. The DPA is also driven by a constant amplitude phase modulated (PM) signal centered at RF. The demonstrated DPA provides output power of 1.45 W at 900 MHz with drain efficiency of 65.9%. The power and efficiency are adequate for use in cellular handsets for 3G and 4G standards. The DPA can transmit WCDMA and LTE signals at 900 MHz and is functional from 800 MHz to 2.4 GHz with different matching networks. This DPA is a multi-band, multi-standard PA and is used as a building block for additional designs in this work.The back-off efficiency enhancement of PA is critical to efficiently transmit signals of high PAPR from hand-sets. In the second part of the work, two identical DPAs are used to implement a digitally modulated Doherty power amplifier (DDPA). This part of the work investigates the challenges and develops the techniques for achieving strong efficiency peaking in output power back-off for CMOS Doherty PAs at microwave frequencies. The output combiner needed within the Doherty architecture is realized using surface-mount components on a printed circuit board (PCB). Digital AM signals to both DPAs are independently provided as inputs. The phase difference between RF PM inputs of main and peaking DPAs can also be varied. The peak output power of CMOS DDPA at 900 MHz is >2 W (highest reported in the literature) with drain efficiency of 55.5%, while at 6 dB back-off the drain efficiency is 52.6%. The back-off efficiency and its improvement relative to class-B is highest reported in…

Subjects/Keywords: Electrical engineering; CMOS Power Amplifier

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APA (6^th Edition):

Diddi, V. (2017). Digitally Controlled Microwave Power Amplifier Design Techniques for Wireless Communications. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/3h72p8f9

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Diddi, Varish. “Digitally Controlled Microwave Power Amplifier Design Techniques for Wireless Communications.” 2017. Thesis, University of California – San Diego. Accessed March 01, 2021. http://www.escholarship.org/uc/item/3h72p8f9.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Diddi, Varish. “Digitally Controlled Microwave Power Amplifier Design Techniques for Wireless Communications.” 2017. Web. 01 Mar 2021.

Vancouver:

Diddi V. Digitally Controlled Microwave Power Amplifier Design Techniques for Wireless Communications. [Internet] [Thesis]. University of California – San Diego; 2017. [cited 2021 Mar 01]. Available from: http://www.escholarship.org/uc/item/3h72p8f9.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Diddi V. Digitally Controlled Microwave Power Amplifier Design Techniques for Wireless Communications. [Thesis]. University of California – San Diego; 2017. Available from: http://www.escholarship.org/uc/item/3h72p8f9

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Ottawa

10. Seneviratne, Sashieka. Efficiency Enhancement of Pico-cell Base Station Power Amplifier MMIC in GaN HFET Technology Using the Doherty Technique .

Degree: 2012, University of Ottawa

URL: http://hdl.handle.net/10393/23078

► With the growth of smart phones, the demand for more broadband, data centric technologies are being driven higher. As mobile operators worldwide plan and deploy… (more)

▼ With the growth of smart phones, the demand for more broadband, data centric technologies are being driven higher. As mobile operators worldwide plan and deploy 4th generation (4G) networks such as LTE to support the relentless growth in mobile data demand, the need for strategically positioned pico-sized cellular base stations known as ‘pico-cells’ are gaining traction. In addition to having to design a transceiver in a much compact footprint, pico-cells must still face the technical challenges presented by the new 4G systems, such as reduced power consumptions and linear amplification of the signals. The RF power amplifier (PA) that amplifies the output signals of 4G pico-cell systems face challenges to minimize size, achieve high average efficiencies and broader bandwidths while maintaining linearity and operating at higher frequencies. 4G standards as LTE use non-constant envelope modulation techniques with high peak to average ratios. Power amplifiers implemented in such applications are forced to operate at a backed off region from saturation. Therefore, in order to reduce power consumption, a design of a high efficiency PA that can maintain the efficiency for a wider range of radio frequency signals is required. The primary focus of this thesis is to enhance the efficiency of a compact RF amplifier suitable for a 4G pico-cell base station. For this aim, an integrated two way Doherty amplifier design in a compact 10mm x 11.5mm monolithic microwave integrated circuit using GaN device technology is presented. Using non-linear GaN HFETs models, the design achieves high effi-ciencies of over 50% at both back-off and peak power regions without compromising on the stringent linearity requirements of 4G LTE standards. This demonstrates a 17% increase in power added efficiency at 6 dB back off from peak power compared to conventional Class AB amplifier performance. Performance optimization techniques to select between high efficiency and high linearity operation are also presented. Overall, this thesis demonstrates the feasibility of an integrated HFET Doherty amplifier for LTE band 7 which entails the frequencies from 2.62-2.69GHz. The realization of the layout and various issues related to the PA design is discussed and attempted to be solved.

Subjects/Keywords: Power Amplifier; Doherty; MMIC; GaN

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APA (6^th Edition):

Seneviratne, S. (2012). Efficiency Enhancement of Pico-cell Base Station Power Amplifier MMIC in GaN HFET Technology Using the Doherty Technique . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/23078

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Seneviratne, Sashieka. “Efficiency Enhancement of Pico-cell Base Station Power Amplifier MMIC in GaN HFET Technology Using the Doherty Technique .” 2012. Thesis, University of Ottawa. Accessed March 01, 2021. http://hdl.handle.net/10393/23078.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Seneviratne, Sashieka. “Efficiency Enhancement of Pico-cell Base Station Power Amplifier MMIC in GaN HFET Technology Using the Doherty Technique .” 2012. Web. 01 Mar 2021.

Vancouver:

Seneviratne S. Efficiency Enhancement of Pico-cell Base Station Power Amplifier MMIC in GaN HFET Technology Using the Doherty Technique . [Internet] [Thesis]. University of Ottawa; 2012. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10393/23078.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Seneviratne S. Efficiency Enhancement of Pico-cell Base Station Power Amplifier MMIC in GaN HFET Technology Using the Doherty Technique . [Thesis]. University of Ottawa; 2012. Available from: http://hdl.handle.net/10393/23078

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Baylor University

11. Fellows, Matthew, 1989-. Multidimensional power amplifier circuit optimizations for adaptive radar.

Degree: PhD, Baylor University. Dept. of Electrical & Computer Engineering., 2017, Baylor University

URL: http://hdl.handle.net/2104/10038

► As wireless technology and dynamic spectrum allocation continue to proliferate, the ability to dynamically reconfigure radar transmitter power amplifiers will become necessary for adaptive radar.… (more)

Subjects/Keywords: Cognitive radar. Optimization. Power amplifier.

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APA (6^th Edition):

Fellows, Matthew, 1. (2017). Multidimensional power amplifier circuit optimizations for adaptive radar. (Doctoral Dissertation). Baylor University. Retrieved from http://hdl.handle.net/2104/10038

Chicago Manual of Style (16^th Edition):

Fellows, Matthew, 1989-. “Multidimensional power amplifier circuit optimizations for adaptive radar.” 2017. Doctoral Dissertation, Baylor University. Accessed March 01, 2021. http://hdl.handle.net/2104/10038.

MLA Handbook (7^th Edition):

Fellows, Matthew, 1989-. “Multidimensional power amplifier circuit optimizations for adaptive radar.” 2017. Web. 01 Mar 2021.

Vancouver:

Fellows, Matthew 1. Multidimensional power amplifier circuit optimizations for adaptive radar. [Internet] [Doctoral dissertation]. Baylor University; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/2104/10038.

Council of Science Editors:

Fellows, Matthew 1. Multidimensional power amplifier circuit optimizations for adaptive radar. [Doctoral Dissertation]. Baylor University; 2017. Available from: http://hdl.handle.net/2104/10038

Delft University of Technology

12. He, J. (author). Wideband High Power Doherty Amplifiers.

Degree: 2013, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:419401bd-08dc-49bb-8855-13ae7d18e0d7

►

Currently the Doherty Power Amplifier (DPA) is replacing the traditional Class B amplifier in base-station and broadcast applications, as such becoming the preferred choice of… (more)

▼

Currently the Doherty Power Amplifier (DPA) is replacing the traditional Class B amplifier in base-station and broadcast applications, as such becoming the preferred choice of industry due to its simplicity and high efficiency performance. In spite of its success, so far practical DPA implementations can provide only a very limited RF bandwidth, which tends to narrow down even more at higher power levels. This narrowband behavior of the DPA is mostly caused by the use of traditional operating classes for the active devices and bandwidth restrictions related to use of a conventional impedance inverter. In this work, the bandwidth of different DPA topologies has been analyzed, followed by a discussion of recent techniques that can help to improve the DPA bandwidth. To overcome the remaining bandwidth limitations in a DPA design, a novel differential configuration was proposed. In this approach, transmission line based baluns are used to implement the desired wideband 2nd harmonic terminations of the active devices. By combining this technique with a novel wideband impedance inverter, excellent DPA wideband performance can be achieved. Unfortunately, when going to practical balun implementations, various imperfections come to light, which trouble the achievable DPA bandwidth performance. For this reason, three practical balun structures are investigated in detail, namely, the coaxial cable based balun, the vertically installed planar balun and suspended planar stripline balun. To explore the proposed DPA concept when using practical baluns, two DPAs featuring mixed-signal driven inputs are presented. A dedicated design procedure for these DPAs is also given. The first prototype is implemented using NXP GaN devices and coaxial cable based baluns. Simulation results show a maximum output power of 52dBm, but in 6dB power back-off we only reach 40% efficiency from 530MHz to 700MHz, which is significantly less than the intend bandwidth (450MHz-810MHz). Using the lessons learned of this first amplifier, a second design with NXP LDMOS devices and suspended planar stripline balun has been developed. According to simulation this later design provides a maximum output power of 59dBm with the efficiency above 55% at both full power and 6dB power back-off. According the simulations this second design can even achieve 50% efficiency at 8dB back-off. The related center frequency is 650MHz with a high-efficiency bandwidth at 6dB power back-off (efficiency within 10% of its maximum) from 460MHz to 790MHz.

Microwave group

Microelectronics & Computer Engineering

Electrical Engineering, Mathematics and Computer Science

Advisors/Committee Members: De Vreede, L.C.N. (mentor), Qureshi, J. (mentor), Calvillo-Cortés, D.A. (mentor).

Subjects/Keywords: Doherty power amplifier; Balun; Wideband

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APA (6^th Edition):

He, J. (. (2013). Wideband High Power Doherty Amplifiers. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:419401bd-08dc-49bb-8855-13ae7d18e0d7

Chicago Manual of Style (16^th Edition):

He, J (author). “Wideband High Power Doherty Amplifiers.” 2013. Masters Thesis, Delft University of Technology. Accessed March 01, 2021. http://resolver.tudelft.nl/uuid:419401bd-08dc-49bb-8855-13ae7d18e0d7.

MLA Handbook (7^th Edition):

He, J (author). “Wideband High Power Doherty Amplifiers.” 2013. Web. 01 Mar 2021.

Vancouver:

He J(. Wideband High Power Doherty Amplifiers. [Internet] [Masters thesis]. Delft University of Technology; 2013. [cited 2021 Mar 01]. Available from: http://resolver.tudelft.nl/uuid:419401bd-08dc-49bb-8855-13ae7d18e0d7.

Council of Science Editors:

He J(. Wideband High Power Doherty Amplifiers. [Masters Thesis]. Delft University of Technology; 2013. Available from: http://resolver.tudelft.nl/uuid:419401bd-08dc-49bb-8855-13ae7d18e0d7

Georgia Tech

13. Cho, Mikyung. Analog predistortion for improvement of RF power amplifier efficiency and linearity.

Degree: PhD, Electrical and Computer Engineering, 2016, Georgia Tech

URL: http://hdl.handle.net/1853/55648

► The objective of this research is to implement analog systems that enable highly efficient and linear operations of the RF PAs used in wireless communication… (more)

Subjects/Keywords: RF; Power amplifier; Predistortion; Linearization

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APA (6^th Edition):

Cho, M. (2016). Analog predistortion for improvement of RF power amplifier efficiency and linearity. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/55648

Chicago Manual of Style (16^th Edition):

Cho, Mikyung. “Analog predistortion for improvement of RF power amplifier efficiency and linearity.” 2016. Doctoral Dissertation, Georgia Tech. Accessed March 01, 2021. http://hdl.handle.net/1853/55648.

MLA Handbook (7^th Edition):

Cho, Mikyung. “Analog predistortion for improvement of RF power amplifier efficiency and linearity.” 2016. Web. 01 Mar 2021.

Vancouver:

Cho M. Analog predistortion for improvement of RF power amplifier efficiency and linearity. [Internet] [Doctoral dissertation]. Georgia Tech; 2016. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1853/55648.

Council of Science Editors:

Cho M. Analog predistortion for improvement of RF power amplifier efficiency and linearity. [Doctoral Dissertation]. Georgia Tech; 2016. Available from: http://hdl.handle.net/1853/55648

University of North Texas

14. Raavi, Srinivasa. Design of a Wideband Class J Power Amplifier.

Degree: 2013, University of North Texas

URL: https://digital.library.unt.edu/ark:/67531/metadc271882/

► A conventional RF power amplifier will convert the low powered radio frequency signals into high powered signals. Along with the expected ability to increase the… (more)

Subjects/Keywords: Power amplifier; wideband; class J

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APA (6^th Edition):

Raavi, . S. (2013). Design of a Wideband Class J Power Amplifier. (Thesis). University of North Texas. Retrieved from https://digital.library.unt.edu/ark:/67531/metadc271882/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Raavi, Srinivasa. “Design of a Wideband Class J Power Amplifier.” 2013. Thesis, University of North Texas. Accessed March 01, 2021. https://digital.library.unt.edu/ark:/67531/metadc271882/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Raavi, Srinivasa. “Design of a Wideband Class J Power Amplifier.” 2013. Web. 01 Mar 2021.

Vancouver:

Raavi S. Design of a Wideband Class J Power Amplifier. [Internet] [Thesis]. University of North Texas; 2013. [cited 2021 Mar 01]. Available from: https://digital.library.unt.edu/ark:/67531/metadc271882/.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Raavi S. Design of a Wideband Class J Power Amplifier. [Thesis]. University of North Texas; 2013. Available from: https://digital.library.unt.edu/ark:/67531/metadc271882/

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

15. Masood, Mir. Digitally-assisted, efficiency enhanced, linear RF power amplifier architectures.

Degree: PhD, Electrical and Computer Engineering, 2018, Georgia Tech

URL: http://hdl.handle.net/1853/61115

► This dissertation presents the use of advanced digital techniques in the development of efficiency enhanced, linearized power amplifier (PA) architectures. In this research, digital enhancements… (more)

Subjects/Keywords: Pre-distortion; Power amplifier; Doherty

3 more images…

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APA (6^th Edition):

Masood, M. (2018). Digitally-assisted, efficiency enhanced, linear RF power amplifier architectures. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/61115

Chicago Manual of Style (16^th Edition):

Masood, Mir. “Digitally-assisted, efficiency enhanced, linear RF power amplifier architectures.” 2018. Doctoral Dissertation, Georgia Tech. Accessed March 01, 2021. http://hdl.handle.net/1853/61115.

MLA Handbook (7^th Edition):

Masood, Mir. “Digitally-assisted, efficiency enhanced, linear RF power amplifier architectures.” 2018. Web. 01 Mar 2021.

Vancouver:

Masood M. Digitally-assisted, efficiency enhanced, linear RF power amplifier architectures. [Internet] [Doctoral dissertation]. Georgia Tech; 2018. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1853/61115.

Council of Science Editors:

Masood M. Digitally-assisted, efficiency enhanced, linear RF power amplifier architectures. [Doctoral Dissertation]. Georgia Tech; 2018. Available from: http://hdl.handle.net/1853/61115

Georgia Tech

16. Ju, Inchan. A study on design methodologies of power amplifiers using SiGe BiCMOS technologies.

Degree: PhD, Electrical and Computer Engineering, 2018, Georgia Tech

URL: http://hdl.handle.net/1853/61180

► The goal of the proposed research is to develop multiple design methodologies of power amplifiers (PAs) using silicon germanium (SiGe) heterojunction bipolar junction transistor (HBT)… (more)

Subjects/Keywords: Power amplifier; HBT; SiGe

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APA (6^th Edition):

Ju, I. (2018). A study on design methodologies of power amplifiers using SiGe BiCMOS technologies. (Doctoral Dissertation). Georgia Tech. Retrieved from http://hdl.handle.net/1853/61180

Chicago Manual of Style (16^th Edition):

Ju, Inchan. “A study on design methodologies of power amplifiers using SiGe BiCMOS technologies.” 2018. Doctoral Dissertation, Georgia Tech. Accessed March 01, 2021. http://hdl.handle.net/1853/61180.

MLA Handbook (7^th Edition):

Ju, Inchan. “A study on design methodologies of power amplifiers using SiGe BiCMOS technologies.” 2018. Web. 01 Mar 2021.

Vancouver:

Ju I. A study on design methodologies of power amplifiers using SiGe BiCMOS technologies. [Internet] [Doctoral dissertation]. Georgia Tech; 2018. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1853/61180.

Council of Science Editors:

Ju I. A study on design methodologies of power amplifiers using SiGe BiCMOS technologies. [Doctoral Dissertation]. Georgia Tech; 2018. Available from: http://hdl.handle.net/1853/61180

Texas A&M University

17. Lunsford, James Keith. A Self-Calibrated Power Detector and Current Sensor for Use in a Power Amplifier Control Circuit.

Degree: MS, Electrical Engineering, 2018, Texas A&M University

URL: http://hdl.handle.net/1969.1/192028

► The power amplifier in a transmitter, especially high-power transmitters, generally uses more power than any other component in the signal chain. As a result, large… (more)

Subjects/Keywords: power; amplifier; current; detector; control

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APA (6^th Edition):

Lunsford, J. K. (2018). A Self-Calibrated Power Detector and Current Sensor for Use in a Power Amplifier Control Circuit. (Masters Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/192028

Chicago Manual of Style (16^th Edition):

Lunsford, James Keith. “A Self-Calibrated Power Detector and Current Sensor for Use in a Power Amplifier Control Circuit.” 2018. Masters Thesis, Texas A&M University. Accessed March 01, 2021. http://hdl.handle.net/1969.1/192028.

MLA Handbook (7^th Edition):

Lunsford, James Keith. “A Self-Calibrated Power Detector and Current Sensor for Use in a Power Amplifier Control Circuit.” 2018. Web. 01 Mar 2021.

Vancouver:

Lunsford JK. A Self-Calibrated Power Detector and Current Sensor for Use in a Power Amplifier Control Circuit. [Internet] [Masters thesis]. Texas A&M University; 2018. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1969.1/192028.

Council of Science Editors:

Lunsford JK. A Self-Calibrated Power Detector and Current Sensor for Use in a Power Amplifier Control Circuit. [Masters Thesis]. Texas A&M University; 2018. Available from: http://hdl.handle.net/1969.1/192028

San Jose State University

18. Li, Ying Ying. Design and Analysis of RF CMOS Power Amplifiers for Bluetooth Applications.

Degree: MS, Electrical Engineering, 2014, San Jose State University

URL: https://doi.org/10.31979/etd.sv8x-3hag ; https://scholarworks.sjsu.edu/etd_theses/4503

► This thesis researches the design of transceiver front-end RF amplifiers for Bluetooth applications in GPDK 45 nm CMOS technology. The target of the design… (more)

Subjects/Keywords: Bluetooth; class E; Class E Power Amplifier; LNA; low noise amplifier; RF Power Amplifier

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APA (6^th Edition):

Li, Y. Y. (2014). Design and Analysis of RF CMOS Power Amplifiers for Bluetooth Applications. (Masters Thesis). San Jose State University. Retrieved from https://doi.org/10.31979/etd.sv8x-3hag ; https://scholarworks.sjsu.edu/etd_theses/4503

Chicago Manual of Style (16^th Edition):

Li, Ying Ying. “Design and Analysis of RF CMOS Power Amplifiers for Bluetooth Applications.” 2014. Masters Thesis, San Jose State University. Accessed March 01, 2021. https://doi.org/10.31979/etd.sv8x-3hag ; https://scholarworks.sjsu.edu/etd_theses/4503.

MLA Handbook (7^th Edition):

Li, Ying Ying. “Design and Analysis of RF CMOS Power Amplifiers for Bluetooth Applications.” 2014. Web. 01 Mar 2021.

Vancouver:

Li YY. Design and Analysis of RF CMOS Power Amplifiers for Bluetooth Applications. [Internet] [Masters thesis]. San Jose State University; 2014. [cited 2021 Mar 01]. Available from: https://doi.org/10.31979/etd.sv8x-3hag ; https://scholarworks.sjsu.edu/etd_theses/4503.

Council of Science Editors:

Li YY. Design and Analysis of RF CMOS Power Amplifiers for Bluetooth Applications. [Masters Thesis]. San Jose State University; 2014. Available from: https://doi.org/10.31979/etd.sv8x-3hag ; https://scholarworks.sjsu.edu/etd_theses/4503

University of Waterloo

19. Wyrzykowska, Aneta. Broadband Doherty Power Amplifier using Symmetrical GaN Transistors.

Degree: 2015, University of Waterloo

URL: http://hdl.handle.net/10012/9023

► The wireless industry has seen a tremendous growth in its users over the last decade. This has led the industry to adapt a number of… (more)

▼ The wireless industry has seen a tremendous growth in its users over the last decade. This has led the industry to adapt a number of new standards allowing for better use of the scarce and often very fragmented frequency spectrum. [1] The new standards have brought with them the use of OFDM signaling to allow for higher data rates and better robustness against frequency selective channel interference. The OFDM protocols combined with multi-standard radios however have provided many challenges to the radio frequency, RF, industry with the largest challenge presented to the power amplifier design. The OFDM signals are well known for their high peak to average power ratio which forces the RF equipment to work at significant back-off compared to peak power. This unfortunately leads to rather low system efficiencies. To address the problem the Doherty power amplifier has been brought back into the design community as it directly solves the issues related to average power efficiency. To date however many of the Doherty designs have focused on the narrowband application of the power amplifier often targeting a single standard with bandwidths directly tied to the operational band which at best is usually only couple hundred MHz wide. With the recent changes in the standards and the ever growing desire to provide several standards on one radio the Doherty has to be redesigned to allow for broadband communications. This thesis examines the major sources of bandwidth limitation in the Doherty power amplifier and provides a review of the current approaches to solving the problem. It then goes on to propose several changes in the Doherty architecture to allow for the use of complex impedance to provide both higher efficiency at back-off and wider operational bandwidth. The proposed technique was then used to design a symmetrical Doherty power amplifier targeted to operate in the 1.8 – 2.8 GHz frequency range with 42 dBm of output power and back-off efficiency above 50%.

Subjects/Keywords: GaN Doherty broadband power amplifier; high efficiency power amplifier

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APA (6^th Edition):

Wyrzykowska, A. (2015). Broadband Doherty Power Amplifier using Symmetrical GaN Transistors. (Thesis). University of Waterloo. Retrieved from http://hdl.handle.net/10012/9023

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Wyrzykowska, Aneta. “Broadband Doherty Power Amplifier using Symmetrical GaN Transistors.” 2015. Thesis, University of Waterloo. Accessed March 01, 2021. http://hdl.handle.net/10012/9023.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Wyrzykowska, Aneta. “Broadband Doherty Power Amplifier using Symmetrical GaN Transistors.” 2015. Web. 01 Mar 2021.

Vancouver:

Wyrzykowska A. Broadband Doherty Power Amplifier using Symmetrical GaN Transistors. [Internet] [Thesis]. University of Waterloo; 2015. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10012/9023.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Wyrzykowska A. Broadband Doherty Power Amplifier using Symmetrical GaN Transistors. [Thesis]. University of Waterloo; 2015. Available from: http://hdl.handle.net/10012/9023

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

20. Chen, Chih-Hao. A Study of Power Amplifier Distortion due to DC Bias Perturbation and a Push-Pull Design of CMOS Class-E Power Amplifier Using Power Combining.

Degree: Master, Electrical Engineering, 2009, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730109-113731

► Abstractï¼ This thesis studies the memory effect due to bias perturbation on digital predistortion technique, and employs multi-tone continuous wave signal and digital modulation signals… (more)

Subjects/Keywords: Power Amplifier; Power Combining; Bias perturbation

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APA (6^th Edition):

Chen, C. (2009). A Study of Power Amplifier Distortion due to DC Bias Perturbation and a Push-Pull Design of CMOS Class-E Power Amplifier Using Power Combining. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730109-113731

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Chen, Chih-Hao. “A Study of Power Amplifier Distortion due to DC Bias Perturbation and a Push-Pull Design of CMOS Class-E Power Amplifier Using Power Combining.” 2009. Thesis, NSYSU. Accessed March 01, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730109-113731.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Chen, Chih-Hao. “A Study of Power Amplifier Distortion due to DC Bias Perturbation and a Push-Pull Design of CMOS Class-E Power Amplifier Using Power Combining.” 2009. Web. 01 Mar 2021.

Vancouver:

Chen C. A Study of Power Amplifier Distortion due to DC Bias Perturbation and a Push-Pull Design of CMOS Class-E Power Amplifier Using Power Combining. [Internet] [Thesis]. NSYSU; 2009. [cited 2021 Mar 01]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730109-113731.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Chen C. A Study of Power Amplifier Distortion due to DC Bias Perturbation and a Push-Pull Design of CMOS Class-E Power Amplifier Using Power Combining. [Thesis]. NSYSU; 2009. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0730109-113731

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cal Poly

21. Bendig, Rudi Matthew. AC Power Combining Strategy with Application to Efficient Linear Power Amplifiers.

Degree: MS, Electrical Engineering, 2014, Cal Poly

URL: https://digitalcommons.calpoly.edu/theses/1220 ; 10.15368/theses.2014.66

► With the ongoing push for wireless systems to accommodate more users and support higher data rates more efficient modulation schemes have been created that… (more)

Subjects/Keywords: Two-source power amplifier; Peak to Average Power Ratio; Linear Power Amplifier; Electrical and Electronics

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APA (6^th Edition):

Bendig, R. M. (2014). AC Power Combining Strategy with Application to Efficient Linear Power Amplifiers. (Masters Thesis). Cal Poly. Retrieved from https://digitalcommons.calpoly.edu/theses/1220 ; 10.15368/theses.2014.66

Chicago Manual of Style (16^th Edition):

Bendig, Rudi Matthew. “AC Power Combining Strategy with Application to Efficient Linear Power Amplifiers.” 2014. Masters Thesis, Cal Poly. Accessed March 01, 2021. https://digitalcommons.calpoly.edu/theses/1220 ; 10.15368/theses.2014.66.

MLA Handbook (7^th Edition):

Bendig, Rudi Matthew. “AC Power Combining Strategy with Application to Efficient Linear Power Amplifiers.” 2014. Web. 01 Mar 2021.

Vancouver:

Bendig RM. AC Power Combining Strategy with Application to Efficient Linear Power Amplifiers. [Internet] [Masters thesis]. Cal Poly; 2014. [cited 2021 Mar 01]. Available from: https://digitalcommons.calpoly.edu/theses/1220 ; 10.15368/theses.2014.66.

Council of Science Editors:

Bendig RM. AC Power Combining Strategy with Application to Efficient Linear Power Amplifiers. [Masters Thesis]. Cal Poly; 2014. Available from: https://digitalcommons.calpoly.edu/theses/1220 ; 10.15368/theses.2014.66

University of California – San Diego

22. Vorapipat, Voravit. Active Load Modulation for High Efficiency RF Transmitters.

Degree: Electrical Engineering (Electronic Circuits and Systems), 2018, University of California – San Diego

URL: http://www.escholarship.org/uc/item/3p49d4vq

► This dissertation focuses on the development of active load-modulation techniques to improve back-off efficiency of power amplifiers (PAs) while maintaining wide bandwidth and high linearity… (more)

▼ This dissertation focuses on the development of active load-modulation techniques to improve back-off efficiency of power amplifiers (PAs) while maintaining wide bandwidth and high linearity suitable for modern wireless handsets. High back-off efficiency is required because of the use of high spectral efficiency modulation with high peak-to-average power ratio (PAPR), which causes the PA to operate in a back-off condition most of the time, typically reducing the efficiency. The Doherty architecture is a widespread active load modulation technique. A well-known issue for Doherty PAs, however, is limited bandwidth due to the use of frequency-sensitive quarter-wave transmission line or its equivalent as impedance inverter. In this work, the impedance inverter is eliminated by using voltage-source PA building blocks, rather than current-source PAs used in conventional Doherty PAs. Such idea was shown in Doherty’s original paper (1936), however it was long forgotten due to the unavailability of voltage-source PAs. Mainstream Doherty amplifiers are implemented using two current source PAs and an impedance inverter. Recently, advances in CMOS devices and PA architecture have led to a high efficiency, high linearity voltage source PA, a switched capacitor power amplifier (SCPA). In this dissertation, a Doherty PA without impedance inverter, the Voltage-Mode Doherty (VMD), is realized by using SCPA building blocks. The VMD is fabricated in 65nm CMOS and achieves 24dBm saturated power (Psat) with power-added efficiency (PAE) of 45%/34% at 0dB/5.6dB back-off, comparable to the state of the art however with much wider 1dB fractional bandwidth from 750MHz to 1050MHz. With memoryless linearization, the VMD transmits 40MHz 256-QAM 802.11ac modulation with -34.8dB EVM and 22% PAE. Compared to the state of the art, the VMD achieves much better modulation accuracy with similar PAE. The wide bandwidth, high back-off efficiency, and excellent linearity of VMD architecture enable high efficiency RF transmitters for future wideband and high spectral efficiency modulation. Another issue of commonly used active load modulation techniques is a rather “shallow” back-off efficiency enhancement of about 6dB. Since modern modulation signals have PAPR of about 10dB, achieving deeper back-off enhancement can further improve the overall efficiency. Several hybrid architectures have been demonstrated to have efficiency enhancement beyond 6dB back-off. However, they come at the cost of a mode-switching glitch which occurs when the PA changes configuration. The mode-switching glitch causes increased distortion in the transmitted signal proportional to the modulation bandwidth, thus preventing these PAs to be used with future wideband modulation. The second part of the dissertation combined the class-G SCPA and VMD used in the first part of the dissertation to implement a PA with efficiency enhancement up to 12dB back-off without mode-switching glitch. The CG-VMD PA is fabricated in 45nm CMOS SOI with integrated balun. At 3.5GHz, it achieved…

Subjects/Keywords: Electrical engineering; Active Load Modulation; Class-G; CMOS; Doherty Power Amplifier; Power Amplifier; Switched Capacitor Power Amplifier

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APA (6^th Edition):

Vorapipat, V. (2018). Active Load Modulation for High Efficiency RF Transmitters. (Thesis). University of California – San Diego. Retrieved from http://www.escholarship.org/uc/item/3p49d4vq

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Vorapipat, Voravit. “Active Load Modulation for High Efficiency RF Transmitters.” 2018. Thesis, University of California – San Diego. Accessed March 01, 2021. http://www.escholarship.org/uc/item/3p49d4vq.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Vorapipat, Voravit. “Active Load Modulation for High Efficiency RF Transmitters.” 2018. Web. 01 Mar 2021.

Vancouver:

Vorapipat V. Active Load Modulation for High Efficiency RF Transmitters. [Internet] [Thesis]. University of California – San Diego; 2018. [cited 2021 Mar 01]. Available from: http://www.escholarship.org/uc/item/3p49d4vq.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Vorapipat V. Active Load Modulation for High Efficiency RF Transmitters. [Thesis]. University of California – San Diego; 2018. Available from: http://www.escholarship.org/uc/item/3p49d4vq

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Georgia Tech

23. Rao, Sunil Gururaj. Design of wideband silicon-germanium RF front end circuits for broadband communications systems.

Degree: MS, Electrical and Computer Engineering, 2019, Georgia Tech

URL: http://hdl.handle.net/1853/62700

► This thesis discusses the design of wideband front-end circuits for broadband communications systems, designed in silicon-germanium technology. The bandwidths of these circuits cover from 2… (more)

▼ This thesis discusses the design of wideband front-end circuits for broadband communications systems, designed in silicon-germanium technology. The bandwidths of these circuits cover from 2 GHz to 18 GHz. In Chapter 1, an introduction to wideband communications systems is presented. In addition, a brief summary of phased array radars and the need for wideband radars are discussed. Also, an overview of Silicon-Germanium technology and its advantages in the context of wideband circuit design are discussed. In Chapter 2, the design challenges associated with wideband RF front-end circuits are presented. In particular, the design space of wideband power amplifiers and low-noise amplifiers is discussed. Both the active and passive circuit design difficulties for each circuit are evaluated. In addition, traditional approaches to amplifier design and their drawbacks for wideband circuits are explained. In Chapter 3, the design of a wideband 1-20 GHz Silicon-Germanium power amplifier is discussed. In this design, a distributed amplifier topology is utilized with transistor stacking to simultaneously achieve high output power and wideband impedance matching. This amplifier is designed in a highly scaled 90 nm SiGe BiCMOS process. Measurement results and a comparison to state-of-the-art wideband power amplifiers are shown. This work, ”A 1-20 GHz Distributed, Stacked SiGe Power Amplifier” was published in the 2018 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium [1]. In Chapter 4, the design of a wideband 1-18 GHz Silicon-Germanium low noise ampli- fier is presented. A resistive feedback topology is used to achieve wideband operation with moderate gain and low noise figure. In addition, a cryogenic characterization of this amplifier is conducted with measurements of S-parameters, 1 dB compression point, and noise over temperature. A comparison to state-of-the-art cryogenic amplifiers is shown. Furthermore, the demonstration and explanation of an on-wafer cryogenic noise measurement scheme are presented. This work, ”A Low Power, Wideband SiGe Low Noise Amplifier for Cryogenic Temperature Operation” will be submitted to the 2019 IEEE BiCMOS and Compound Semiconductor Integrated Circuits and Technology Symposium (BCICTS). In Chapter 5, a summary of the achieved results is shown. In addition, future research directions are discussed. Advisors/Committee Members: Cressler, John D. (advisor), Wang, Hua (committee member), Ralph, Stephen E. (committee member).

Subjects/Keywords: Silicon-germanium; RF circuits; Wideband; Power amplifier; Low-noise amplifier; Cryogenic

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APA (6^th Edition):

Rao, S. G. (2019). Design of wideband silicon-germanium RF front end circuits for broadband communications systems. (Masters Thesis). Georgia Tech. Retrieved from http://hdl.handle.net/1853/62700

Chicago Manual of Style (16^th Edition):

Rao, Sunil Gururaj. “Design of wideband silicon-germanium RF front end circuits for broadband communications systems.” 2019. Masters Thesis, Georgia Tech. Accessed March 01, 2021. http://hdl.handle.net/1853/62700.

MLA Handbook (7^th Edition):

Rao, Sunil Gururaj. “Design of wideband silicon-germanium RF front end circuits for broadband communications systems.” 2019. Web. 01 Mar 2021.

Vancouver:

Rao SG. Design of wideband silicon-germanium RF front end circuits for broadband communications systems. [Internet] [Masters thesis]. Georgia Tech; 2019. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1853/62700.

Council of Science Editors:

Rao SG. Design of wideband silicon-germanium RF front end circuits for broadband communications systems. [Masters Thesis]. Georgia Tech; 2019. Available from: http://hdl.handle.net/1853/62700

Brno University of Technology

24. Matějka, Vojtěch. Nízkofrekvenční výkonové zesilovače: Low-frequency Power Amplifiers.

Degree: 2018, Brno University of Technology

URL: http://hdl.handle.net/11012/67628

► The aim of my bachelor thesis was to design a low-frequency amplifier with some specific parameters. The thesis includes several different connections of known and… (more)

Subjects/Keywords: Zesilovač; výkonový zesilovač; komplementární; Amplifier; power amplifier; complementary

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APA (6^th Edition):

Matějka, V. (2018). Nízkofrekvenční výkonové zesilovače: Low-frequency Power Amplifiers. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/67628

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Matějka, Vojtěch. “Nízkofrekvenční výkonové zesilovače: Low-frequency Power Amplifiers.” 2018. Thesis, Brno University of Technology. Accessed March 01, 2021. http://hdl.handle.net/11012/67628.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Matějka, Vojtěch. “Nízkofrekvenční výkonové zesilovače: Low-frequency Power Amplifiers.” 2018. Web. 01 Mar 2021.

Vancouver:

Matějka V. Nízkofrekvenční výkonové zesilovače: Low-frequency Power Amplifiers. [Internet] [Thesis]. Brno University of Technology; 2018. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/11012/67628.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Matějka V. Nízkofrekvenční výkonové zesilovače: Low-frequency Power Amplifiers. [Thesis]. Brno University of Technology; 2018. Available from: http://hdl.handle.net/11012/67628

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Brno University of Technology

25. Doležel, Tomáš. Nízkofrekvenční zesilovače: Low-frequency Amplifiers.

Degree: 2019, Brno University of Technology

URL: http://hdl.handle.net/11012/34347

► The bachelor thesis deals with the involvement of the audio amplifier, design printed circuit boards, implementation and verification of measuring amplifiers. The proposed amplifier has… (more)

Subjects/Keywords: zesilovač; výkonový zesilovač; přechodové zkreslení; stejnosměrný zesilovač; širokopásmový zesilovač; Amplifier; power amplifier; crossover distortion; direkt amplifier; broadband amplifier

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APA (6^th Edition):

Doležel, T. (2019). Nízkofrekvenční zesilovače: Low-frequency Amplifiers. (Thesis). Brno University of Technology. Retrieved from http://hdl.handle.net/11012/34347

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Doležel, Tomáš. “Nízkofrekvenční zesilovače: Low-frequency Amplifiers.” 2019. Thesis, Brno University of Technology. Accessed March 01, 2021. http://hdl.handle.net/11012/34347.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Doležel, Tomáš. “Nízkofrekvenční zesilovače: Low-frequency Amplifiers.” 2019. Web. 01 Mar 2021.

Vancouver:

Doležel T. Nízkofrekvenční zesilovače: Low-frequency Amplifiers. [Internet] [Thesis]. Brno University of Technology; 2019. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/11012/34347.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Doležel T. Nízkofrekvenční zesilovače: Low-frequency Amplifiers. [Thesis]. Brno University of Technology; 2019. Available from: http://hdl.handle.net/11012/34347

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Cornell University

26. Rippke, Ian. Design of Integrated, Efficient Power Amplifiers for Next-Generation Wireless Communications.

Degree: 2004, Cornell University

URL: http://hdl.handle.net/1813/233

► An integrated power amplifier and DC-DC converter are presented to create a variable supply voltage power amplifier to improve battery life in cellular handsets. This… (more)

Subjects/Keywords: power amplifier; wireless

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APA (6^th Edition):

Rippke, I. (2004). Design of Integrated, Efficient Power Amplifiers for Next-Generation Wireless Communications. (Thesis). Cornell University. Retrieved from http://hdl.handle.net/1813/233

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Rippke, Ian. “Design of Integrated, Efficient Power Amplifiers for Next-Generation Wireless Communications.” 2004. Thesis, Cornell University. Accessed March 01, 2021. http://hdl.handle.net/1813/233.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Rippke, Ian. “Design of Integrated, Efficient Power Amplifiers for Next-Generation Wireless Communications.” 2004. Web. 01 Mar 2021.

Vancouver:

Rippke I. Design of Integrated, Efficient Power Amplifiers for Next-Generation Wireless Communications. [Internet] [Thesis]. Cornell University; 2004. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1813/233.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Rippke I. Design of Integrated, Efficient Power Amplifiers for Next-Generation Wireless Communications. [Thesis]. Cornell University; 2004. Available from: http://hdl.handle.net/1813/233

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

NSYSU

27. Guo , Zhe-Zhi. Large-signal reliability of pHEMT power amplifier.

Degree: Master, Communications Engineering, 2017, NSYSU

URL: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0811117-134325

► Power amplifier and pHEMT are measured to extract the X-parameters from PNA-X. The X-parameters model is used to simulate and the practical of the model… (more)

Subjects/Keywords: X-parameter; stress; power amplifier; pHEMT; RF

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APA (6^th Edition):

Guo , Z. (2017). Large-signal reliability of pHEMT power amplifier. (Thesis). NSYSU. Retrieved from http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0811117-134325

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Guo , Zhe-Zhi. “Large-signal reliability of pHEMT power amplifier.” 2017. Thesis, NSYSU. Accessed March 01, 2021. http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0811117-134325.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Guo , Zhe-Zhi. “Large-signal reliability of pHEMT power amplifier.” 2017. Web. 01 Mar 2021.

Vancouver:

Guo Z. Large-signal reliability of pHEMT power amplifier. [Internet] [Thesis]. NSYSU; 2017. [cited 2021 Mar 01]. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0811117-134325.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Guo Z. Large-signal reliability of pHEMT power amplifier. [Thesis]. NSYSU; 2017. Available from: http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0811117-134325

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

University of Toronto

28. Chung, Man Lok Joshua. A Comparison between GaN and Silicon Based Class D Audio Power Amplifiers with Pulse Density Modulation.

Degree: 2016, University of Toronto

URL: http://hdl.handle.net/1807/74573

►

GaN power devices have lower specific on-resistance and faster switching speeds when compared to silicon power devices. These attributes make the GaN devices attractive for… (more)

Subjects/Keywords: Class D Amplifier; GaN power device; 0544

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APA (6^th Edition):

Chung, M. L. J. (2016). A Comparison between GaN and Silicon Based Class D Audio Power Amplifiers with Pulse Density Modulation. (Masters Thesis). University of Toronto. Retrieved from http://hdl.handle.net/1807/74573

Chicago Manual of Style (16^th Edition):

Chung, Man Lok Joshua. “A Comparison between GaN and Silicon Based Class D Audio Power Amplifiers with Pulse Density Modulation.” 2016. Masters Thesis, University of Toronto. Accessed March 01, 2021. http://hdl.handle.net/1807/74573.

MLA Handbook (7^th Edition):

Chung, Man Lok Joshua. “A Comparison between GaN and Silicon Based Class D Audio Power Amplifiers with Pulse Density Modulation.” 2016. Web. 01 Mar 2021.

Vancouver:

Chung MLJ. A Comparison between GaN and Silicon Based Class D Audio Power Amplifiers with Pulse Density Modulation. [Internet] [Masters thesis]. University of Toronto; 2016. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/1807/74573.

Council of Science Editors:

Chung MLJ. A Comparison between GaN and Silicon Based Class D Audio Power Amplifiers with Pulse Density Modulation. [Masters Thesis]. University of Toronto; 2016. Available from: http://hdl.handle.net/1807/74573

University of Ottawa

29. Gholami, Mehrdad. A C-Band Compact High Power Active Integrated Phased Array Transmitter Module Using GaN Technology .

Degree: 2017, University of Ottawa

URL: http://hdl.handle.net/10393/36045

► In this research, an innovative phased array antenna module is proposed to implement a high-power, high-efficient and compact C-band radio transmitter. The module configuration, which… (more)

▼ In this research, an innovative phased array antenna module is proposed to implement a high-power, high-efficient and compact C-band radio transmitter. The module configuration, which can be integrated into front-end circuits, was designed as planar layers stacked up together to form a metallic cube. The layers were fabricated by using a Computer Numerical Control (CNC) milling machine and screwed together. The antenna parts and the amplifier units were designed at two opposite sides of the cube to spread the dissipated heat produced by the amplifiers and act as a heat sink. Merging the antenna parts with the amplifier circuits offers additional advantages such as decreasing the total power loss, mass, and volume of the transmitter modules by removing the extra power divider and combiner networks and connectors between them as well as reducing the total signal path. To achieve both a maximum possible radiation efficiency and high directivity, the aperture waveguide antenna was selected as the array element. Four antenna elements have been located in a cavity to be excited equally and the cavity is excited through a slot on its underside so a compact subarray is formed. Antenna measurements demonstrated a 15.5 dBi gain and 20 dB return loss at 10 % fractional bandwidth centered around 5.8 GHz and with more than 98% radiation efficiency. The total dimensions of the subarray are approximately 8*12*4 cm3. The outcoming signal from the amplifiers is transferred into the slot exciting the subarray through a microstrip-to-waveguide transition (MWT). A novel and robust MWT structure was designed for the presented application. The MWT was also integrated with a microstrip coupler to monitor the power from the amplifier output. The measured insertion loss of the MWT along with the microstrip coupler was less than 0.25 dB along with more than 20 dB return loss within the same bandwidth of the subarray. The microstrip coupler shows 38 dB of coupling and more than 48 dB of isolation with negligible effects on the amplifier output signal and the insertion/return loss of the MWT. The amplifier subcomponents consist of power combiners/dividers (PCDs), high power amplifiers (HPAs) and bias circuitry. A Monolithic Microwave Integrated Circuit (MMIC) three-stage HPA was designed in a commercially available 0.15 um AlGaN/GaN HEMT technology provided by National Research Council Canada (NRC) and occupies an area of 4.7*3.7 mm2. To stabilize the HPA, a novel inductive degeneration technique was successfully used. To the best of the author’s knowledge, this is the first time this technique has been used to stabilize HPAs. Careful considerations on input/output impedances of all HEMTs were taken into account to prevent parametric oscillations. Other instability sources, i.e. odd-mode, even-mode, and low frequency (bias circuit) oscillations were also prevented by designing the required stabilization circuits. The electromagnetic simulation of the HPA shows 35 W (45.5 dBm) of saturated output power, 26 dB large signal gain and 29% power…

Subjects/Keywords: High power amplifier; Antenna; Transmitter; MMIC

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APA (6^th Edition):

Gholami, M. (2017). A C-Band Compact High Power Active Integrated Phased Array Transmitter Module Using GaN Technology . (Thesis). University of Ottawa. Retrieved from http://hdl.handle.net/10393/36045

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Gholami, Mehrdad. “A C-Band Compact High Power Active Integrated Phased Array Transmitter Module Using GaN Technology .” 2017. Thesis, University of Ottawa. Accessed March 01, 2021. http://hdl.handle.net/10393/36045.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Gholami, Mehrdad. “A C-Band Compact High Power Active Integrated Phased Array Transmitter Module Using GaN Technology .” 2017. Web. 01 Mar 2021.

Vancouver:

Gholami M. A C-Band Compact High Power Active Integrated Phased Array Transmitter Module Using GaN Technology . [Internet] [Thesis]. University of Ottawa; 2017. [cited 2021 Mar 01]. Available from: http://hdl.handle.net/10393/36045.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Gholami M. A C-Band Compact High Power Active Integrated Phased Array Transmitter Module Using GaN Technology . [Thesis]. University of Ottawa; 2017. Available from: http://hdl.handle.net/10393/36045

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

30. Nandi, Om Prakash. Behavioral Modeling of Power Amplifier with Memory Effect and Linearization Using Digital Pre Distortion.

Degree: Electronics, 2016, University of Gävle

URL: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-22830

► This thesis work studied the behavioral modeling, estimation of parameters, model performance and linearization of power amplifier (PA) using Digital Pre Distortion (DPD) technique.… (more)

Subjects/Keywords: Behavioral Modeling; Power Amplifier; DPD; Telecommunications; Telekommunikation

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APA (6^th Edition):

Nandi, O. P. (2016). Behavioral Modeling of Power Amplifier with Memory Effect and Linearization Using Digital Pre Distortion. (Thesis). University of Gävle. Retrieved from http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-22830

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Chicago Manual of Style (16^th Edition):

Nandi, Om Prakash. “Behavioral Modeling of Power Amplifier with Memory Effect and Linearization Using Digital Pre Distortion.” 2016. Thesis, University of Gävle. Accessed March 01, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-22830.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

MLA Handbook (7^th Edition):

Nandi, Om Prakash. “Behavioral Modeling of Power Amplifier with Memory Effect and Linearization Using Digital Pre Distortion.” 2016. Web. 01 Mar 2021.

Vancouver:

Nandi OP. Behavioral Modeling of Power Amplifier with Memory Effect and Linearization Using Digital Pre Distortion. [Internet] [Thesis]. University of Gävle; 2016. [cited 2021 Mar 01]. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-22830.

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

Council of Science Editors:

Nandi OP. Behavioral Modeling of Power Amplifier with Memory Effect and Linearization Using Digital Pre Distortion. [Thesis]. University of Gävle; 2016. Available from: http://urn.kb.se/resolve?urn=urn:nbn:se:hig:diva-22830

Note: this citation may be lacking information needed for this citation format:
Not specified: Masters Thesis or Doctoral Dissertation

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Open Access Theses and Dissertations