Ultra-wide patch antenna array design at 60GHz band for remote vital sign monitoring with doppler radar principle

Research output: Contribution to journalArticle


Colleges, School and Institutes


In this paper, ultra-wide patch antenna arrays have been presented at 60 GHz band (57.24–65.88 GHz) with improved gain and beam-width capabilities for remote detection of respiration and heart beat rate of a person with Doppler radar principle. The antennas measured and simulation results showed close agreement. The breathing rate (BR) and heart rate (HR) of a 31-year-old man have been accurately detected from various distances ranging from 5 to 200 cm with both single-antenna and dual-antenna operations. In the case of single-antenna operation, the signal is transmitted and received with the same antenna, whereas in dual-antenna operation, two identical antennas are employed, one for signal transmission and the other for reception. It has been found that in case of the single-antenna operation, the accuracy of the remote vital sign monitoring (RVSM) is good for short distance; however, in the case of the dual-antenna operations, the RVSM can be accurately carried out at relatively much longer distance. On the other hand, it has also been seen that the visual results are more obvious with higher gain antennas when the radar beam is confined just on the subject’s body area.


Original languageEnglish
Pages (from-to)548–566
Number of pages19
JournalJournal of Infrared, Millimeter, and Terahertz Waves
Issue number5
Early online date20 Dec 2016
Publication statusPublished - May 2017


  • microstrip antenna, ultra-wide patch arrays, remote vital sign monitoring, Doppler radar, non-contact vital signs monitoring, 60 GHz antenna arrays