Accurate heartbeat monitoring using ultra-wideband radar

Takuya Sakamoto, Ryohei Imasaka, Hirofumi Taki, Toru Sato, Mototaka Yoshioka, Kenichi Inoue, Takeshi Fukuda, Hiroyuki Sakai

Research output: Contribution to journalArticlepeer-review

33 Citations (Scopus)


We demonstrate an accurate remote measurement of heartbeats using an ultra-wideband radar system. Although most conventional systems use either continuous waves or impulse-radio systems for remote vital monitoring, continuous waves suffer from non-stationary clutters, while impulse-radio systems cannot detect heartbeats. Our ultra-wideband radar system has a moderate fractional bandwidth intermediate of these systems, resulting in both the suppression of clutters and high sensitivity in measuring accurate heart rates even in a dynamic environment. A simultaneous measurement of the vital signal of a participant employing the ultra-wideband radar and electrocardiography reveals the high accuracy of the radar system in measuring the heart rate varying over time.

Original languageEnglish
Article number20141197
JournalIEICE Electronics Express
Issue number3
Publication statusPublished - 2015 Jan 28


  • And systems
  • Circuits
  • Heart rate Classification: Microwave and millimeter wave devices
  • Radar
  • Ultra-wideband
  • Vital monitoring

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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