A 60-GHz CMOS direct-conversion Doppler radar RF sensor with clutter canceller for single-antenna noncontact human vital-signs detection

Hsin Chih Kuo, Chien Chang Chou, Chien Chih Lin, Chun Han Yu, Tzuen Hsi Huang, Huey Ru Chuang

Research output: Chapter in Book/Report/Conference proceedingConference contribution

5 Citations (Scopus)

Abstract

This paper presents a 60-GHz CMOS direct-conversion Doppler radar RF sensor with a quasi-circulator (QC) and a clutter canceller circuit for single-antenna noncontact human vital-signs detection. A high isolation QC is designed to provide better detection sensitivity for the tiny vital-signs detection for the single-antenna Doppler radar architecture. The clutter canceller performs cancellation for the transmitting leakage power from the circulator and the background reflection clutter to enhance the detection sensitivity of weak vital signals. The measurement shows that the total transmitting power is 3 dBm while the conversion gain of the sub-harmonic receiver is 10.5 dB. In the human vital-signs detection measurement, at a distance of 75 cm, the detected heartbeat (1-1.3 Hz) and respiratory (0.35-0.45 Hz) signals can be clearly observed. The RF sensor is fabricated in 90-nm technology with a chip size of 2 mm × 2 mm and a consuming power of 217 mW. The presented CMOS vital-signs Doppler radar RF sensor will be very useful for the wireless remote physiological monitoring healthcare system and the tiny vibrations detection applications.

Original languageEnglish
Title of host publicationProceedings of the 2015 IEEE Radio Frequency Integrated Circuits Symposium, RFIC 2015
EditorsDomine Leenaerts
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages35-38
Number of pages4
ISBN (Electronic)9781479976416
DOIs
Publication statusPublished - 2015 Nov 25
EventIEEE Radio Frequency Integrated Circuits Symposium, RFIC 2015 - Phoenix, United States
Duration: 2015 May 172015 May 19

Publication series

NameDigest of Papers - IEEE Radio Frequency Integrated Circuits Symposium
Volume2015-November
ISSN (Print)1529-2517

Other

OtherIEEE Radio Frequency Integrated Circuits Symposium, RFIC 2015
CountryUnited States
CityPhoenix
Period15-05-1715-05-19

All Science Journal Classification (ASJC) codes

  • Engineering(all)

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