Chest-worn Transmitarray Lens for Monitoring Heart Rate Variability with a Remote Self-Injection-Locked Doppler Radar

Rezki El Arif*, Wei Chih Su, Tzyy Sheng Horng, Chung Tse Michael Wu

*Corresponding author for this work

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

Abstract

This paper presents a transmitarray lens that can be worn on the chest to focus the radar beam towards a specific area of the heart for monitoring heart rate variability (HRV). The used Doppler radar is based on self-injection-locking (SIL) technology and was placed remotely from the monitored subject. In the experiment, the transmitarray lens was set up to concentrate the incident wave penetrating into the chest on the heart's tricuspid valve; thus, the accuracy of monitoring HRV can be greatly improved. The comparison of the interbeat interval (IBI) data between the proposed radar measurement and the conventional electrocardiogram (ECG) shows excellent agreement.

Original languageEnglish
Title of host publication2023 IEEE/MTT-S International Microwave Symposium, IMS 2023
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1188-1191
Number of pages4
ISBN (Electronic)9798350347647
DOIs
Publication statusPublished - 2023
Externally publishedYes
Event2023 IEEE/MTT-S International Microwave Symposium, IMS 2023 - San Diego, United States
Duration: 11 Jun 202316 Jun 2023

Publication series

NameIEEE MTT-S International Microwave Symposium Digest
Volume2023-June
ISSN (Print)0149-645X

Conference

Conference2023 IEEE/MTT-S International Microwave Symposium, IMS 2023
Country/TerritoryUnited States
CitySan Diego
Period11/06/2316/06/23

Keywords

  • Doppler radar
  • heart rate variability
  • self-injection-locking
  • transmitarray lens
  • wearable device

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