Tushar K. Thrivikraman

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SUMMARY This paper presents an organic, lightweight X-band antenna array with integrated silicon germanium (SiGe) low noise amplifiers (LNA) and 3-bit phase shifters (PS). The SiGe LNAs and PSs were successfully integrated onto an 8x1 lightweight antenna stack-up utilizing a multilayer liquid crystal polymer (LCP) substrate. Successful comparisons of the(More)
iii ACKNOWLEDGEMENTS I would first like to express my deepest gratitude to Dr. John D. Cressler for his guidance and support as my advisor. He is an exemplary professor and scholar, his enthusiasm for research and teaching is truly inspirational. As I strive for an academic position in my future career, I hope to be able to instill in others the level of(More)
—We report results on the cryogenic operation of two different monolithic X-band silicon-germanium (SiGe) heterojunc-tion bipolar transistor low noise amplifiers (LNAs) implemented in a commercially-available 130 nm SiGe BiCMOS platform. These SiGe LNAs exhibit a dramatic reduction in noise temperature with cooling, yielding of less than 21 K (0.3 dB noise(More)
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