subject:(Power amplifier)

Texas A&M University

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

Degree: 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. (Thesis). Texas A&M University. Retrieved from http://hdl.handle.net/1969.1/161560

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):

Qian, Haoyu. “Analysis and Design of CMOS Radio-Frequency Power Amplifiers.” 2017. Thesis, Texas A&M University. Accessed February 18, 2020. http://hdl.handle.net/1969.1/161560.

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

MLA Handbook (7^th Edition):

Qian, Haoyu. “Analysis and Design of CMOS Radio-Frequency Power Amplifiers.” 2017. Web. 18 Feb 2020.

Vancouver:

Qian H. Analysis and Design of CMOS Radio-Frequency Power Amplifiers. [Internet] [Thesis]. Texas A&M University; 2017. [cited 2020 Feb 18]. Available from: http://hdl.handle.net/1969.1/161560.

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

Council of Science Editors:

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

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

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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

SUN J. Audio power amplifier design. [Internet] [Thesis]. University of Gävle; 2011. [cited 2020 Feb 18]. 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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

Hussain R. Highly Integrated Wideband Doherty Power Amplifier. [Internet] [Thesis]. , School of Engineering; 2013. [cited 2020 Feb 18]. 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. 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. “Wideband High Power Amplifier Design:.” 2011. Masters Thesis, Delft University of Technology. Accessed February 18, 2020. http://resolver.tudelft.nl/uuid:fdf758f2-ea47-44a5-b384-806464750dee.

MLA Handbook (7^th Edition):

Li, J. “Wideband High Power Amplifier Design:.” 2011. Web. 18 Feb 2020.

Vancouver:

Li J. Wideband High Power Amplifier Design:. [Internet] [Masters thesis]. Delft University of Technology; 2011. [cited 2020 Feb 18]. 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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

Shao J. Advanced Power Amplifiers Design for Modern Wireless Communication. [Internet] [Thesis]. University of North Texas; 2015. [cited 2020 Feb 18]. 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

University of Alberta

6. 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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

Masud MR. Cryogenically Cooled Yb:YAG Ceramic Amplifier Module for High Power Lasers. [Internet] [Masters thesis]. University of Alberta; 2015. [cited 2020 Feb 18]. 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

Baylor University

7. [No author]. Multidimensional power amplifier circuit optimizations for adaptive radar.

Degree: 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):

author], [. (2017). Multidimensional power amplifier circuit optimizations for adaptive radar. (Thesis). Baylor University. Retrieved from http://hdl.handle.net/2104/10038

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):

author], [No. “Multidimensional power amplifier circuit optimizations for adaptive radar. ” 2017. Thesis, Baylor University. Accessed February 18, 2020. http://hdl.handle.net/2104/10038.

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

MLA Handbook (7^th Edition):

author], [No. “Multidimensional power amplifier circuit optimizations for adaptive radar. ” 2017. Web. 18 Feb 2020.

Vancouver:

author] [. Multidimensional power amplifier circuit optimizations for adaptive radar. [Internet] [Thesis]. Baylor University; 2017. [cited 2020 Feb 18]. Available from: http://hdl.handle.net/2104/10038.

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

Council of Science Editors:

author] [. Multidimensional power amplifier circuit optimizations for adaptive radar. [Thesis]. Baylor University; 2017. Available from: http://hdl.handle.net/2104/10038

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

University of California – San Diego

8. 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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

Diddi V. Digitally Controlled Microwave Power Amplifier Design Techniques for Wireless Communications. [Internet] [Thesis]. University of California – San Diego; 2017. [cited 2020 Feb 18]. 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

Rochester Institute of Technology

9. Klehn, Brett. A Precise analysis of a class e amplifier.

Degree: 2009, Rochester Institute of Technology

URL: https://scholarworks.rit.edu/theses/4480

► An analytical approach to the design and simulation of a Class-E power amplifier under typical high frequency switching conditions is presented. The analysis will optimize… (more)

Subjects/Keywords: Class-E; Power amplifier

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APA (6^th Edition):

Klehn, B. (2009). A Precise analysis of a class e amplifier. (Thesis). Rochester Institute of Technology. Retrieved from https://scholarworks.rit.edu/theses/4480

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):

Klehn, Brett. “A Precise analysis of a class e amplifier.” 2009. Thesis, Rochester Institute of Technology. Accessed February 18, 2020. https://scholarworks.rit.edu/theses/4480.

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

MLA Handbook (7^th Edition):

Klehn, Brett. “A Precise analysis of a class e amplifier.” 2009. Web. 18 Feb 2020.

Vancouver:

Klehn B. A Precise analysis of a class e amplifier. [Internet] [Thesis]. Rochester Institute of Technology; 2009. [cited 2020 Feb 18]. Available from: https://scholarworks.rit.edu/theses/4480.

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

Council of Science Editors:

Klehn B. A Precise analysis of a class e amplifier. [Thesis]. Rochester Institute of Technology; 2009. Available from: https://scholarworks.rit.edu/theses/4480

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

NSYSU

10. 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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

Lin S. Linearization of High Power Amplifiers Using Digital Predistortion for WiMAX Basestation Applications. [Internet] [Thesis]. NSYSU; 2008. [cited 2020 Feb 18]. 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

Delft University of Technology

11. Wang, Y. Wideband Class-B Power Amplifiers:.

Degree: 2010, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:560ef9a7-7615-40a2-aefc-7e747b9e4cc7

► Vanwege vertrouwelijke informatie of andere redenen is slechts een deel van de publicatie opgenomen in de repository. Due to confidential information or other reasons only… (more)

▼ Vanwege vertrouwelijke informatie of andere redenen is slechts een deel van de publicatie opgenomen in de repository. Due to confidential information or other reasons only a part of the publication is presented in the repository. Wideband Class-B power amplifier is required in Modern communication systems. The bandwidth limitation of Class-B Power amplifier is generally caused by the narrow band 2nd harmonic short. In this thesis the methods of 2nd harmonic manipulation in Class-B power amplifier are discussed. In the beginning, the current and voltage waveforms at output of the amplifier are analyzed, and a series of load configurations which can give good performance in Class-B power amplifier is given. In single-ended topology the traditional 2nd harmonic short networks are band limited and interaction between fundamental impedance and 2nd harmonic impedance limited the performance of short networks. Introducing varactors into the short networks the bandwidth of amplifier is extended. Performance of commercial varactor is restricted by the breakdown voltage and package parasitic. A 32% relative bandwidth Class-B power amplifier is realized with the 90 V break down voltage varactors from the Aeroflex central frequency of the amplifier is 1 GHz, the drain efficiency is above 65% over the frequency band. In differential topology the fundamental signal and 2nd harmonic are isolated, which provides convenience for wideband design. In practical design the bandwidth limitation is generally caused by the non-idea transformer in fundamental matching, compensation capacitors are required at primary of transformer. In low power condition, the 2nd harmonic short bandwidth can be extended by using the coupling between primary inductors. Two loops structure is applied in this case. In high power design, the 2nd harmonic is shorted though the large compensation capacitors. One loop structure is applied in this condition. In simulation result these structures can provide 50% to 70% relative bandwidth, which indicates their potential in wideband Class-B design. Advisors/Committee Members: De Vreede, L., Van Rijs, F..

Subjects/Keywords: Power amplifier; Class B; wideband

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Wang, Y. (2010). Wideband Class-B Power Amplifiers:. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:560ef9a7-7615-40a2-aefc-7e747b9e4cc7

Chicago Manual of Style (16^th Edition):

Wang, Y. “Wideband Class-B Power Amplifiers:.” 2010. Masters Thesis, Delft University of Technology. Accessed February 18, 2020. http://resolver.tudelft.nl/uuid:560ef9a7-7615-40a2-aefc-7e747b9e4cc7.

MLA Handbook (7^th Edition):

Wang, Y. “Wideband Class-B Power Amplifiers:.” 2010. Web. 18 Feb 2020.

Vancouver:

Wang Y. Wideband Class-B Power Amplifiers:. [Internet] [Masters thesis]. Delft University of Technology; 2010. [cited 2020 Feb 18]. Available from: http://resolver.tudelft.nl/uuid:560ef9a7-7615-40a2-aefc-7e747b9e4cc7.

Council of Science Editors:

Wang Y. Wideband Class-B Power Amplifiers:. [Masters Thesis]. Delft University of Technology; 2010. Available from: http://resolver.tudelft.nl/uuid:560ef9a7-7615-40a2-aefc-7e747b9e4cc7

Delft University of Technology

12. He, J. 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. Advisors/Committee Members: De Vreede, L.C.N., Qureshi, J., Calvillo-Cortés, D.A..

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. “Wideband High Power Doherty Amplifiers:.” 2013. Masters Thesis, Delft University of Technology. Accessed February 18, 2020. http://resolver.tudelft.nl/uuid:419401bd-08dc-49bb-8855-13ae7d18e0d7.

MLA Handbook (7^th Edition):

He, J. “Wideband High Power Doherty Amplifiers:.” 2013. Web. 18 Feb 2020.

Vancouver:

He J. Wideband High Power Doherty Amplifiers:. [Internet] [Masters thesis]. Delft University of Technology; 2013. [cited 2020 Feb 18]. 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

University of Ottawa

13. 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 February 18, 2020. 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. 18 Feb 2020.

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 2020 Feb 18]. 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

University of Waterloo

14. 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 February 18, 2020. 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. 18 Feb 2020.

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 2020 Feb 18]. 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 North Texas

15. 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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

Raavi S. Design of a Wideband Class J Power Amplifier. [Internet] [Thesis]. University of North Texas; 2013. [cited 2020 Feb 18]. 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

Georgia Tech

16. 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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

Cho M. Analog predistortion for improvement of RF power amplifier efficiency and linearity. [Internet] [Doctoral dissertation]. Georgia Tech; 2016. [cited 2020 Feb 18]. 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

Georgia Tech

17. 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

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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 February 18, 2020. http://hdl.handle.net/1853/61115.

MLA Handbook (7^th Edition):

Masood, Mir. “Digitally-Assisted, Efficiency Enhanced, Linear RF Power Amplifier Architectures.” 2018. Web. 18 Feb 2020.

Vancouver:

Masood M. Digitally-Assisted, Efficiency Enhanced, Linear RF Power Amplifier Architectures. [Internet] [Doctoral dissertation]. Georgia Tech; 2018. [cited 2020 Feb 18]. 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

18. 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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

Ju I. A Study on Design Methodologies of Power Amplifiers Using SiGe BiCMOS Technologies. [Internet] [Doctoral dissertation]. Georgia Tech; 2018. [cited 2020 Feb 18]. 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

San Jose State University

19. 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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

Li YY. Design and Analysis of RF CMOS Power Amplifiers for Bluetooth Applications. [Internet] [Masters thesis]. San Jose State University; 2014. [cited 2020 Feb 18]. 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

20. 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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

Wyrzykowska A. Broadband Doherty Power Amplifier using Symmetrical GaN Transistors. [Internet] [Thesis]. University of Waterloo; 2015. [cited 2020 Feb 18]. 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

21. 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 February 18, 2020. 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. 18 Feb 2020.

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 2020 Feb 18]. 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

22. 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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

Bendig RM. AC Power Combining Strategy with Application to Efficient Linear Power Amplifiers. [Internet] [Masters thesis]. Cal Poly; 2014. [cited 2020 Feb 18]. 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

23. 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 · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

Vorapipat V. Active Load Modulation for High Efficiency RF Transmitters. [Internet] [Thesis]. University of California – San Diego; 2018. [cited 2020 Feb 18]. 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

Brno University of Technology

24. Matějka, Vojtěch. Nízkofrekvenční výkonové zesilovače .

Degree: 2017, Brno University of Technology

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

► Cílem mojí bakalářské práce bylo zhotovit nízkofrekvenční výkonový zesilovač s určitými parametry. V práci je zmíněno několik různých zapojení známých, používaných zesilovačů, které jsou něčím… (more)

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

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APA (6^th Edition):

Matějka, V. (2017). Nízkofrekvenční výkonové zesilovače . (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 .” 2017. Thesis, Brno University of Technology. Accessed February 18, 2020. 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 .” 2017. Web. 18 Feb 2020.

Vancouver:

Matějka V. Nízkofrekvenční výkonové zesilovače . [Internet] [Thesis]. Brno University of Technology; 2017. [cited 2020 Feb 18]. 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 . [Thesis]. Brno University of Technology; 2017. 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 .

Degree: 2014, Brno University of Technology

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

► Bakalářská práce se zabývá návrhem zapojení nízkofrekvenčního zesilovače, návrhem desky plošných spojů, realizací a ověření zesilovače měřením. Navrhovaný zesilovač má výkon 100 W na jmenovité… (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. (2014). Nízkofrekvenční zesilovače . (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 .” 2014. Thesis, Brno University of Technology. Accessed February 18, 2020. 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 .” 2014. Web. 18 Feb 2020.

Vancouver:

Doležel T. Nízkofrekvenční zesilovače . [Internet] [Thesis]. Brno University of Technology; 2014. [cited 2020 Feb 18]. 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 . [Thesis]. Brno University of Technology; 2014. 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

University of Minnesota

26. Lee, Boram. Low voltage / low power rail-to-rail CMOS operational amplifier for portable ECG.

Degree: PhD, Electrical Engineering, 2013, University of Minnesota

URL: http://purl.umn.edu/158713

► One of the most important building blocks in modern IC design is the operational amplifier. For the portable electrocardiogram (ECG), the operational amplifier is employed… (more)

Subjects/Keywords: Amplifier; ECG; Low power; Rail-to-Rail

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APA (6^th Edition):

Lee, B. (2013). Low voltage / low power rail-to-rail CMOS operational amplifier for portable ECG. (Doctoral Dissertation). University of Minnesota. Retrieved from http://purl.umn.edu/158713

Chicago Manual of Style (16^th Edition):

Lee, Boram. “Low voltage / low power rail-to-rail CMOS operational amplifier for portable ECG.” 2013. Doctoral Dissertation, University of Minnesota. Accessed February 18, 2020. http://purl.umn.edu/158713.

MLA Handbook (7^th Edition):

Lee, Boram. “Low voltage / low power rail-to-rail CMOS operational amplifier for portable ECG.” 2013. Web. 18 Feb 2020.

Vancouver:

Lee B. Low voltage / low power rail-to-rail CMOS operational amplifier for portable ECG. [Internet] [Doctoral dissertation]. University of Minnesota; 2013. [cited 2020 Feb 18]. Available from: http://purl.umn.edu/158713.

Council of Science Editors:

Lee B. Low voltage / low power rail-to-rail CMOS operational amplifier for portable ECG. [Doctoral Dissertation]. University of Minnesota; 2013. Available from: http://purl.umn.edu/158713

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 February 18, 2020. 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. 18 Feb 2020.

Vancouver:

Guo Z. Large-signal reliability of pHEMT power amplifier. [Internet] [Thesis]. NSYSU; 2017. [cited 2020 Feb 18]. 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

The Ohio State University

28. Yang, Chun-Ju. The Design Methodology and Optimization of Varactors Based Tunable Matching Network for Power Amplifiers with Load Adaptation Technique.

Degree: MS, Electrical and Computer Engineering, 2011, The Ohio State University

URL: http://rave.ohiolink.edu/etdc/view?acc_num=osu1308320281

► This thesis presents two tunable matching network designs relying on varactors. The matching network should provide and instantaneous optimized impedance according to different power levels… (more)

Subjects/Keywords: Electrical Engineering; varactors; power amplifier; Load Adaptation

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APA (6^th Edition):

Yang, C. (2011). The Design Methodology and Optimization of Varactors Based Tunable Matching Network for Power Amplifiers with Load Adaptation Technique. (Masters Thesis). The Ohio State University. Retrieved from http://rave.ohiolink.edu/etdc/view?acc_num=osu1308320281

Chicago Manual of Style (16^th Edition):

Yang, Chun-Ju. “The Design Methodology and Optimization of Varactors Based Tunable Matching Network for Power Amplifiers with Load Adaptation Technique.” 2011. Masters Thesis, The Ohio State University. Accessed February 18, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1308320281.

MLA Handbook (7^th Edition):

Yang, Chun-Ju. “The Design Methodology and Optimization of Varactors Based Tunable Matching Network for Power Amplifiers with Load Adaptation Technique.” 2011. Web. 18 Feb 2020.

Vancouver:

Yang C. The Design Methodology and Optimization of Varactors Based Tunable Matching Network for Power Amplifiers with Load Adaptation Technique. [Internet] [Masters thesis]. The Ohio State University; 2011. [cited 2020 Feb 18]. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1308320281.

Council of Science Editors:

Yang C. The Design Methodology and Optimization of Varactors Based Tunable Matching Network for Power Amplifiers with Load Adaptation Technique. [Masters Thesis]. The Ohio State University; 2011. Available from: http://rave.ohiolink.edu/etdc/view?acc_num=osu1308320281

Delft University of Technology

29. Deng, X. Wideband Doherty Power Amplifier Design for Base Station Application:.

Degree: 2010, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:44b3cf3b-32f6-45bf-a937-8de6f826cb61

► Vanwege vertrouwelijke informatie of andere redenen is slechts een deel van de publicatie opgenomen in de repository. Due to confidential information or other reasons only… (more)

▼ Vanwege vertrouwelijke informatie of andere redenen is slechts een deel van de publicatie opgenomen in de repository. Due to confidential information or other reasons only a part of the publication is presented in the repository. Doherty Power Amplifier (DPA) is employed to improve the efficiency when operated with complex modulated signals. Due to its simplicity and high efficiency performance, it has become the preferred choice of industry. However, practical implementations of DPA only provide limited RF bandwidth, especially at high power level. The traditional narrow band device matching network, required phase shift for proper load modulation and impedance inverter seriously limit the bandwidth of DPA. In this work, the frequency behavior of the ideal 2-way symmetrical DPA is analyzed in detail, followed by the introduction of two new impedance inverters used to improve the bandwidth of DPA. In order to fully exploit the wideband potential of the new impedance inverters, the phase relation between the main and peak amplifier should be adjusted according to the power level at every frequency, which can be stored in a lookup table. Based on a previous wideband 20W DPA with mixed-signal input drive, in which the device output capacitance is incorporated into the impedance inverter, a modified DPA using the idea of compensated impedance inverter is designed and simulated. The prototype DPA design is implemented with NXP LDMOS bare die device. Simulation results have shown more than 50% 6dB back off efficiency from 1.5GHz to 2.2GHz, compared with the original case whose 50% efficiency bandwidth is from 1.9GHz to 2.3GHz. Since the prototype DPA is implemented at a low power level with bare die devices and mixed-signal input drive, it cannot be used for the practical base station applications. Traditional high power discrete DPA design method is introduced and the frequency behavior is analyzed. It is found that for the high power DPA, the matching network and the offset line are more important than the impedance inverter for the narrow bandwidth of DPA. A new DPA structure was proposed for wideband operation. Simulation results show smaller gain and power added efficiency spread in a 200MHz frequency band from 2.04GHz to 2.24GHz than the traditional DPA. Advisors/Committee Members: De Vreede, L., Neo, E., Gajadharsing, J..

Subjects/Keywords: Doherty power amplifier; impedance inverter; wideband

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Deng, X. (2010). Wideband Doherty Power Amplifier Design for Base Station Application:. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:44b3cf3b-32f6-45bf-a937-8de6f826cb61

Chicago Manual of Style (16^th Edition):

Deng, X. “Wideband Doherty Power Amplifier Design for Base Station Application:.” 2010. Masters Thesis, Delft University of Technology. Accessed February 18, 2020. http://resolver.tudelft.nl/uuid:44b3cf3b-32f6-45bf-a937-8de6f826cb61.

MLA Handbook (7^th Edition):

Deng, X. “Wideband Doherty Power Amplifier Design for Base Station Application:.” 2010. Web. 18 Feb 2020.

Vancouver:

Deng X. Wideband Doherty Power Amplifier Design for Base Station Application:. [Internet] [Masters thesis]. Delft University of Technology; 2010. [cited 2020 Feb 18]. Available from: http://resolver.tudelft.nl/uuid:44b3cf3b-32f6-45bf-a937-8de6f826cb61.

Council of Science Editors:

Deng X. Wideband Doherty Power Amplifier Design for Base Station Application:. [Masters Thesis]. Delft University of Technology; 2010. Available from: http://resolver.tudelft.nl/uuid:44b3cf3b-32f6-45bf-a937-8de6f826cb61

Delft University of Technology

30. Todi, R. Wideband Class B Power Amplifier Topologies:.

Degree: 2011, Delft University of Technology

URL: http://resolver.tudelft.nl/uuid:fb0df31f-b531-42a9-9033-b37a1ec9036e

► Wireless communication has encountered a tremendous growth over the past few decades. The increased plurality in communication standards, characterized by the use of different operating… (more)

Subjects/Keywords: power amplifier; class B J; Doherty

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APA · Chicago · MLA · Vancouver · CSE | Export to Zotero / EndNote / Reference Manager

APA (6^th Edition):

Todi, R. (2011). Wideband Class B Power Amplifier Topologies:. (Masters Thesis). Delft University of Technology. Retrieved from http://resolver.tudelft.nl/uuid:fb0df31f-b531-42a9-9033-b37a1ec9036e

Chicago Manual of Style (16^th Edition):

Todi, R. “Wideband Class B Power Amplifier Topologies:.” 2011. Masters Thesis, Delft University of Technology. Accessed February 18, 2020. http://resolver.tudelft.nl/uuid:fb0df31f-b531-42a9-9033-b37a1ec9036e.

MLA Handbook (7^th Edition):

Todi, R. “Wideband Class B Power Amplifier Topologies:.” 2011. Web. 18 Feb 2020.

Vancouver:

Todi R. Wideband Class B Power Amplifier Topologies:. [Internet] [Masters thesis]. Delft University of Technology; 2011. [cited 2020 Feb 18]. Available from: http://resolver.tudelft.nl/uuid:fb0df31f-b531-42a9-9033-b37a1ec9036e.

Council of Science Editors:

Todi R. Wideband Class B Power Amplifier Topologies:. [Masters Thesis]. Delft University of Technology; 2011. Available from: http://resolver.tudelft.nl/uuid:fb0df31f-b531-42a9-9033-b37a1ec9036e

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Open Access Theses and Dissertations