Accuracy of a low-power Ka-band non-contact heartbeat detector measured from four sides of a human body

Yanming Xiao, Changzhi Li, Jenshan Lin

Research output: Contribution to journalConference article

20 Scopus citations

Abstract

A Ka-band heartbeat detector using double-sideband transmission to detect human heartbeat and respiration signals is demonstrated. The short wavelength at Ka-band increases the sensitivity to detect small body motion. The double sideband transmission simplifies the radio transceiver architecture. The detection accuracy was calculated and compared for measurements using two different transmitting power levels, four different body orientations, and at five different distances. It was found that this detector achieved better than 80% detection accuracy for all the above conditions. The measurement results show that the higher power level (350-μW) can achieve better detection accuracy and longer detection distance than lower power (14.2-μW). The results also show that the detection accuracy measured from the back is the best, which is analyzed and explained using a nonlinear model.

Original languageEnglish
Article number4015239
Pages (from-to)1576-1579
Number of pages4
JournalIEEE MTT-S International Microwave Symposium Digest
DOIs
StatePublished - 2006
Event2006 IEEE MTT-S International Microwave Symposium Digest - San Francisco, CA, United States
Duration: Jun 11 2006Jun 16 2006

Keywords

  • Biomedicine
  • Cardiopulmonary
  • Detector
  • Double sideband
  • Electromagnetic wave
  • Heartbeat
  • Ka-band
  • Life sign
  • Low-power
  • Microwave
  • Millimeter-wave
  • Non-contact
  • RF
  • Remote sensing
  • Respiration
  • Sensor
  • Telemedicine
  • Vital sign
  • Wireless

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