Measurement of human heartbeat and respiration signals using phase detection radar

Rev Sci Instrum. 2007 Oct;78(10):104703. doi: 10.1063/1.2798937.

Abstract

This article introduces a low-cost phase detection radar aimed at measuring the human heartbeat and respiration signals without any physical connections to the human body. A continuous-wave radar targeting the chest will detect the phase difference, resulted by the time-varying target position of the heartbeat, between the transmitted signal and the reflected signal. We have tested the developed radar to measure the heartbeat and respiration signals at a distance of about 40 cm from the chest.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Diagnosis, Computer-Assisted / instrumentation*
  • Diagnosis, Computer-Assisted / methods*
  • Equipment Design
  • Equipment Failure Analysis
  • Heart Function Tests / instrumentation*
  • Heart Rate / physiology*
  • Humans
  • Radar / instrumentation*
  • Reproducibility of Results
  • Respiratory Function Tests / instrumentation*
  • Respiratory Function Tests / methods
  • Respiratory Mechanics / physiology*
  • Sensitivity and Specificity