Optimal carrier frequency of non-contact vital sign detectors

Changzhi Li, Jenshan Lin

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

82 Scopus citations

Abstract

Simulations were performed based on a model developed in ADS to demonstrate the effects of non-linear cosine transfer function in non-contact vital sign detection. Harmonics and intermodulation effects have been analyzed theoretically and demonstrated by simulation. It is shown that in contrast to the observation from simple linear approximation that detection sensitivity always increases with carrier frequency, there is an optimum carrier frequency for non-contact Doppler radar vital sign detection. For typical values of human chest wall movement, the simulation shows that the upper bound of the carrier frequency should be limited to the lower region of the Ka-band to improve detection accuracy.

Original languageEnglish
Title of host publicationProceedings - 2007 IEEE Radio and Wireless Symposium, RWS
Pages281-284
Number of pages4
DOIs
StatePublished - 2007
Event2007 IEEE Radio and Wireless Symposium, RWS - Long Beach, CA, United States
Duration: Jan 9 2007Jan 11 2007

Publication series

NameProceedings - 2007 IEEE Radio and Wireless Symposium, RWS

Conference

Conference2007 IEEE Radio and Wireless Symposium, RWS
CountryUnited States
CityLong Beach, CA
Period01/9/0701/11/07

Keywords

  • Doppler radar
  • Harmonics
  • Intermodulation
  • Non-contact
  • Non-linear transfer function
  • Optimum carrier frequency
  • Vital sign detection

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