Noninvasive biosignal detection radar system using circular polarization.
This paper proposes an integrated hypersensitive Doppler radar system through a circular polarization characteristic. Through the idea of a reverse sense of rotation when the reflecting surface is perfectly conducting, it is shown that the detecting property of the system can be effectively improved by using antennas that have a reverse polarization. This bistatic radar system can be used in noninvasively sensing biosignals such as respiration and heart rates with the periodic movement of skin and muscle near the heart. The operating frequency of the system is in the X-band and the radar size is 95 x50 x13 mm(3).
Lee
Jee-Hoon
JH
Korea Advanced Institute of Science andTechnology (KAIST), Daejeon 305-701, Korea. jhlee99@kaist.ac.kr
Hwang
Jung Man
JM
Choi
Dong Hyuk
DH
Park
Seong-Ook
SO
D000328:Adult; D004301:Doppler Effect; D004553:Electric Conductivity; D004562:Electrocardiography; D004867:Equipment Design; D006339:Heart Rate / Q000502:physiology; D006801:Humans; D008297:Male; D008991:Monitoring, Physiologic / Q000295:instrumentation*; D011825:Radar; D012119:Respiration; D012879:Skin Physiological Phenomena