A fully integrated UHF CMOS power amplifier for spacecraft applications
In: IEEE Transactions on Microwave Theory and Techniques, Jg. 55 (2007-10-01), Heft 10, S. 2006-2014
Online
academicJournal
Zugriff:
A power amplifier (PA) is designed for a surface-to-orbit proximity link microtransceiver on Mars exploration rovers, aerobots, and small networked landers and works in conjunction with a 0.2-dB loss transmit/receive switch to allow nearly the full 1 W to reach the antenna. The fully integrated UHF CMOS PA with more than 30-dBm output is reported for the first time. A differential pMOS structure with floating-bias cascode transistors and 1 : 3-turn ratio output transformer are chosen to overeome low breakdown voltage ([V.sub.bk]) of CMOS and chip area consumption issues at UHF frequencies. The high-Q on-chip transformer on a sapphire substrate enables the differential PA to drive a single-ended antenna effectively at 400 MHz. The PA in a standard package delivers 30-dBm output with 27% power-added efficiency. No performance degradation was observed in continuous-wave operation and the design has been tested to 136% of its nominal 3.3-V supply without failure. Index Terms--CMOS, power amplifiers (PAs), transceiver, transformer, transmit/receive (TR) switch.
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A fully integrated UHF CMOS power amplifier for spacecraft applications
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Autor/in / Beteiligte Person: | Jeon, Jeongmin ; Kuhn, William B. |
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Zeitschrift: | IEEE Transactions on Microwave Theory and Techniques, Jg. 55 (2007-10-01), Heft 10, S. 2006-2014 |
Veröffentlichung: | 2007 |
Medientyp: | academicJournal |
ISSN: | 0018-9480 (print) |
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