TY - GEN
T1 - Multi-target Vital Sign Detection Using Metamaterial Leaky Wave Antenna-Integrated Super-Regenerative Oscillator
AU - Yuan, Yichao
AU - Wu, Chung Tse Michael
N1 - Funding Information:
This work is supported by the National Science Foundation (NSF) Faculty Early Career Development (CAREER) Program under Grant ECCS-1818478. Any opinions, findings, and conclusions or recommendations expressed in this material are those of the author(s) and do not necessarily reflect the views of the National Science Foundation.
Publisher Copyright:
© 2021 IEEE.
PY - 2021/8/25
Y1 - 2021/8/25
N2 - In this article, a new kind of metamaterial (MTM) leaky wave antenna (LWA)-integrated super-regenerative oscillator (SRO) is introduced to detect multi-target vital sign signals. The proposed radar sensor with beam-scanning angle from-30 ° to-10 ° is designed, while oscillation frequency varies from 2.24 GHz to 2.48 GHz. A quench signal is imposed at the drain voltage of transistor in the circuit to operate the SRO-based radar sensor in the logarithmic mode. Experiment results show that the measured vital sign information for different targets at different locations, such as respiration rates and heartbeat rates, agree well with the ground truth. Meanwhile, the proposed SRO sensor using MTM LWA exhibits higher sensitivity with the further detectable distance compared to the SIL-based MTM LWA.
AB - In this article, a new kind of metamaterial (MTM) leaky wave antenna (LWA)-integrated super-regenerative oscillator (SRO) is introduced to detect multi-target vital sign signals. The proposed radar sensor with beam-scanning angle from-30 ° to-10 ° is designed, while oscillation frequency varies from 2.24 GHz to 2.48 GHz. A quench signal is imposed at the drain voltage of transistor in the circuit to operate the SRO-based radar sensor in the logarithmic mode. Experiment results show that the measured vital sign information for different targets at different locations, such as respiration rates and heartbeat rates, agree well with the ground truth. Meanwhile, the proposed SRO sensor using MTM LWA exhibits higher sensitivity with the further detectable distance compared to the SIL-based MTM LWA.
KW - High sensitivity
KW - leaky wave antenna (LWA)
KW - metamaterial (MTM)
KW - multi-target vital sign detection
KW - super-regenerative oscillator (SRO).
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U2 - 10.1109/RFIT52905.2021.9565286
DO - 10.1109/RFIT52905.2021.9565286
M3 - Conference contribution
AN - SCOPUS:85118114037
T3 - 2021 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2021
BT - 2021 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2021
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2021 IEEE International Symposium on Radio-Frequency Integration Technology, RFIT 2021
Y2 - 25 August 2021 through 27 August 2021
ER -