TY - GEN
T1 - Noncontact Multi-Target Vital Sign Detection using Self-Injection-Locked Radar Sensor based on Metamaterial Leaky Wave Antenna
AU - Yuan, Yichao
AU - Lu, Chunchi
AU - Chen, Austin Ying Kuang
AU - Tseng, Chao Hsiung
AU - Wu, Chung Tse Michael
N1 - Publisher Copyright:
© 2019 IEEE.
PY - 2019/6
Y1 - 2019/6
N2 - This paper presents a new kind of noncontact vital sign detection architecture using self-injection locked (SIL) radar sensor integrated with a metamaterial (MTM) leaky wave antenna (LWA), which can detect vital sign signals of multiple people at different positions simultaneously. A one-dimensional (1-D) MTM LWA is designed to scan from -50° to +30° as the frequency increases from 1.85-2.75 GHz. For the proof of concept, two frequencies, 2.24 GHz and 2.48 GHz are chosen for vital sign detection with two targets at two different positions. A microwave differentiator is then designed to perform frequency demodulation of the proposed MTM SIL radar. By using the differentiator, the output signal of SIL radar is converted from 2.24-2.48 GHz to radio-frequency (RF) signal with amplitude variance. Experimental verification for sensing both heartbeat and respiration rates from two people at different positions was carried out to demonstrate the validity of the proposed MTM SIL radar sensing architecture.
AB - This paper presents a new kind of noncontact vital sign detection architecture using self-injection locked (SIL) radar sensor integrated with a metamaterial (MTM) leaky wave antenna (LWA), which can detect vital sign signals of multiple people at different positions simultaneously. A one-dimensional (1-D) MTM LWA is designed to scan from -50° to +30° as the frequency increases from 1.85-2.75 GHz. For the proof of concept, two frequencies, 2.24 GHz and 2.48 GHz are chosen for vital sign detection with two targets at two different positions. A microwave differentiator is then designed to perform frequency demodulation of the proposed MTM SIL radar. By using the differentiator, the output signal of SIL radar is converted from 2.24-2.48 GHz to radio-frequency (RF) signal with amplitude variance. Experimental verification for sensing both heartbeat and respiration rates from two people at different positions was carried out to demonstrate the validity of the proposed MTM SIL radar sensing architecture.
KW - Self-injection-locked radar (SIL)
KW - leaky wave antenna (LWA)
KW - metamaterial (MTM)
KW - multi-target vital sign detection
UR - http://www.scopus.com/inward/record.url?scp=85069953839&partnerID=8YFLogxK
U2 - 10.1109/mwsym.2019.8700861
DO - 10.1109/mwsym.2019.8700861
M3 - Conference contribution
AN - SCOPUS:85069953839
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 148
EP - 151
BT - 2019 IEEE MTT-S International Microwave Symposium, IMS 2019
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2019 IEEE MTT-S International Microwave Symposium, IMS 2019
Y2 - 2 June 2019 through 7 June 2019
ER -