Wireless non-contact detection of heartbeat and respiration using low-power microwave radar sensor

Jenshan Lin, Changzhi Li

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

40 Scopus citations


This paper reviews the recent developments of a non-contact vital sign (heartbeat and respiration) detection system using low power microwave radar sensor. Two key techniques are employed in this system. The technique of double-sideband transmission and detection replaces the quadrature detection and simplifies the architecture. The other technique of using short wavelength (high frequency carrier) improves the sensitivity while reducing the transmitted power. Theories and experimental results of these techniques will be described. Theory of nonlinear Doppler phase modulation discovered through the use of short wavelength will be presented and its potential applications will be discussed.

Original languageEnglish
Title of host publication2007 Asia-Pacific Microwave Conference, APMC
StatePublished - 2007
EventAsia-Pacific Microwave Conference, APMC 2007 - Bangkok, Thailand
Duration: Dec 11 2007Dec 14 2007

Publication series

NameAsia-Pacific Microwave Conference Proceedings, APMC


ConferenceAsia-Pacific Microwave Conference, APMC 2007


  • Double-sideband
  • Heartbeat
  • Low-power
  • Microwave
  • Non-contact
  • Non-linear
  • Radar
  • Respiration
  • Sensor
  • Vital sign
  • Wireless


Dive into the research topics of 'Wireless non-contact detection of heartbeat and respiration using low-power microwave radar sensor'. Together they form a unique fingerprint.

Cite this