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Thesis
Phase-Shifting Quadrature Generators for Beamforming Receivers in CMOS Integrated Circuits
Washington State University
Master of Science (MS), Washington State University
2023
DOI:
https://doi.org/10.7273/000005313
Abstract
The advancement of modern communications and radar systems has led to the widespread adoption of phased-array-antenna and beamforming systems. By combining multiple beamforming techniques into one architecture, these systems can minimize beam angle error over a wide bandwidth. This work presents the architecture for a true-time-delay beamforming receiver with vector modulation and fine-tune phase shifting. Additionally, polyphase filters are emerging as the most versatile topology for quadrature generation, an essential building block of modern radios. Polyphase filter versatility allows for high bandwidth, low power, small size, low quadrature mismatch, and scalability. A local oscillator with frequency doubling and novel phase-shifting polyphase filters is demonstrated in 65nm CMOS. The local oscillator is designed for a 4-element unit-cell beamforming receiver and has a power consumption of <31mW per element. The frequency doubler has a phase noise of -144dBc/Hz at an offset of 10kHz. This work presents a novel phase-shifting quadrature generator with an image rejection ratio >50dB, a power consumption of <0.24mW, and an area of 0.04 x 0.08mm2.
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Details
- Title
- Phase-Shifting Quadrature Generators for Beamforming Receivers in CMOS Integrated Circuits
- Creators
- Adam Hall Slater
- Contributors
- Subhanshu Gupta (Advisor)Deuk Hyoun Heo (Committee Member)Dae Hyun Kim (Committee Member)
- Awarding Institution
- Washington State University
- Academic Unit
- School of Electrical Engineering and Computer Science
- Theses and Dissertations
- Master of Science (MS), Washington State University
- Publisher
- Washington State University
- Number of pages
- 76
- Identifiers
- 99901031139001842
- Language
- English
- Resource Type
- Thesis