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University of Minnesota

1. Mehra, Ashutosh. Ultra-Wideband Transceiver Design And Optimization.

Degree: PhD, Electrical Engineering, 2015, University of Minnesota

The technology landscape has quickly changed over the last few years. Developments in personal area networks, IC technology, DSP processing and bio-medical devices have enabled the integration of short range communication into low cost personal health care solutions. Newer technologies and solutions are being developed to cater to the personal operating space(POS) and body area networks(BAN). Health care is driving towards using multiple sensor and therapeutic nodes inside the POS. Technology has enabled remote patient care where the patient has low cost on-body wearables that allow the patient/physician to access vital signs without the patient physically visiting the clinic. Big semiconductor giants want to move into the wearable health monitor space. Along with the developments in fitness based health wearables, there has been a lot of interest towards developing BAN devices catering to the 'mission-critical' wearables and implants. Hearing aids, EKG monitors, neurostimulators are some examples. This work explores the use of the 802.15 ulta wideband (UWB) standard for designing a radio to operate in the a wireless sensor network in the BAN. The specific application targeted is a hearing aid. However, the design in this work is capable of working in a low power low range application with the ability to have multiple data rates ranging from a few kHz to 10's of MHz. The first radio designed by Marconi using spark-gap transmitters was an impulse radio (IR). The IR UWB technology boasts of low power, low cost, high data rates, multiple channels, simultaneous networking, the ability to carry information through obstacles that more limited bandwidths cannot, and also potentially lower complexity hardware design. The inherent timing accuracy associated with the technology gives UWB transmissions immunity to multipath fading and are hence make them more suitable for a cluttered indoor environment. The key difference with the traditional narrowband transceiver is that instead of using continuous wave (CW) transmission, impulses in time are used. The timing accuracy associated with these impulses require synchronization in time, rather than synchronization in frequency for carrier-based CW systems. A complete fully integrated system is presented in thesis. This work presents a low-power noncoherent IR UWB transceiver operating at 5GHz in 0.13um CMOS. A fully-digital transmitter generates a shaped output pulse of 1GHz 3-dB bandwidth. DLLs provide a PVT-tolerant time-step resolution of 1ns over the entire symbol period and regulate the pulse generator center frequency. The transmitter outputs -31dBm (0.88pJ/pulse at 1Mpulse/s) with a dynamic (energy) efficiency of 16pJ/pulse. The transmit out pulse is FCC part 15 compliant over process voltage and temperature (PVT) variations. The transmitter is semi-compliant with IEEE 802.15.6 and IEEE 802.15.4 standards and will become completely compliant with minor modifications. The receiver presented in this work is a non-coherent energy detect IR UWB receiver. The receiver has an…

Subjects/Keywords: Hearing aid; IEEE 802.15.6; Impulse radio; MBAN; Super-regenerative amplifier; UWB

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

APA (6th Edition):

Mehra, A. (2015). Ultra-Wideband Transceiver Design And Optimization. (Doctoral Dissertation). University of Minnesota. Retrieved from http://hdl.handle.net/11299/190525

Chicago Manual of Style (16th Edition):

Mehra, Ashutosh. “Ultra-Wideband Transceiver Design And Optimization.” 2015. Doctoral Dissertation, University of Minnesota. Accessed January 18, 2020. http://hdl.handle.net/11299/190525.

MLA Handbook (7th Edition):

Mehra, Ashutosh. “Ultra-Wideband Transceiver Design And Optimization.” 2015. Web. 18 Jan 2020.

Vancouver:

Mehra A. Ultra-Wideband Transceiver Design And Optimization. [Internet] [Doctoral dissertation]. University of Minnesota; 2015. [cited 2020 Jan 18]. Available from: http://hdl.handle.net/11299/190525.

Council of Science Editors:

Mehra A. Ultra-Wideband Transceiver Design And Optimization. [Doctoral Dissertation]. University of Minnesota; 2015. Available from: http://hdl.handle.net/11299/190525

2. ANG CHYUEN WEI. Design of low power CMOS UWB transceiver ICs.

Degree: 2009, National University of Singapore

Subjects/Keywords: Ultra-Wideband (UWB); low power; transceiver; low noise amplifier; super regenerative; burst mode

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

APA (6th Edition):

WEI, A. C. (2009). Design of low power CMOS UWB transceiver ICs. (Thesis). National University of Singapore. Retrieved from http://scholarbank.nus.edu.sg/handle/10635/16537

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

Chicago Manual of Style (16th Edition):

WEI, ANG CHYUEN. “Design of low power CMOS UWB transceiver ICs.” 2009. Thesis, National University of Singapore. Accessed January 18, 2020. http://scholarbank.nus.edu.sg/handle/10635/16537.

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

MLA Handbook (7th Edition):

WEI, ANG CHYUEN. “Design of low power CMOS UWB transceiver ICs.” 2009. Web. 18 Jan 2020.

Vancouver:

WEI AC. Design of low power CMOS UWB transceiver ICs. [Internet] [Thesis]. National University of Singapore; 2009. [cited 2020 Jan 18]. Available from: http://scholarbank.nus.edu.sg/handle/10635/16537.

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

Council of Science Editors:

WEI AC. Design of low power CMOS UWB transceiver ICs. [Thesis]. National University of Singapore; 2009. Available from: http://scholarbank.nus.edu.sg/handle/10635/16537

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

.