Journal
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS
Volume 18, Issue 7, Pages 494-496Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/LMWC.2008.925112
Keywords
cardiopulmonary; CMOS; double-sideband; heartbeat; low-power; microwave; non-contact; radar; respiration; sensor; vital sign
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A 5 GHz double-sideband radar sensor chip for non-contact vital sign detection was designed and fabricated in UMC 0.18 mu m mixed-mode/radio frequency CMOS process. The transceiver was designed with a differential architecture. Measurements show that it has over I GHz tuning range, and can successfully detect both the respiration and the heartbeat signals of a human subject. It is also shown that the differential architecture has the advantage of reducing local oscillation leakage. The 5 GHz double-sideband system can avoid null detection point by frequency tuning.
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