A high-sensitivity low-power vital sign radar sensor based on super-regenerative oscillator architecture

Yichao Yuan, Austin Ying Kuang Chen, Chung Tse Michael Wu

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

Abstract

A new kind of noncontact vital sign radar sensor based on super-regenerative oscillator (SRO) architecture is presented in this work. The proposed SRO vital sign radar sensor is designed to operate at the center frequency of 2.32 GHz, where two different quench signals, 100 Hz and 20 kHz, are employed to control the SRO radar sensor for target detection. By using the proposed SRO architecture, experimental results demonstrate that the displacement frequency of an actuator as well as human vital sign signals, including heartbeat and respiration rates, can be easily identified and extracted. Furthermore, compared with the self-injection-locked (SIL) detection scheme, the proposed SRO radar sensor exhibit superior characteristics, such as lower power consumption, higher sensitivity, and reduced circuit complexity.

Original languageEnglish (US)
Title of host publicationIMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages651-654
Number of pages4
ISBN (Electronic)9781728168159
DOIs
StatePublished - Aug 2020
Event2020 IEEE/MTT-S International Microwave Symposium, IMS 2020 - Virtual, Los Angeles, United States
Duration: Aug 4 2020Aug 6 2020

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2020-August
ISSN (Print)0149-645X

Conference

Conference2020 IEEE/MTT-S International Microwave Symposium, IMS 2020
CountryUnited States
CityVirtual, Los Angeles
Period8/4/208/6/20

All Science Journal Classification (ASJC) codes

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering

Keywords

  • High sensitivity
  • Low power
  • Radar sensor
  • Super-regenerative oscillator (SRO)
  • Vital sign detection

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