TY - GEN
T1 - A high-sensitivity low-power vital sign radar sensor based on super-regenerative oscillator architecture
AU - Yuan, Yichao
AU - Chen, Austin Ying Kuang
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.
PY - 2020/8
Y1 - 2020/8
N2 - A new kind of noncontact vital sign radar sensor based on super-regenerative oscillator (SRO) architecture is presented in this work. The proposed SRO vital sign radar sensor is designed to operate at the center frequency of 2.32 GHz, where two different quench signals, 100 Hz and 20 kHz, are employed to control the SRO radar sensor for target detection. By using the proposed SRO architecture, experimental results demonstrate that the displacement frequency of an actuator as well as human vital sign signals, including heartbeat and respiration rates, can be easily identified and extracted. Furthermore, compared with the self-injection-locked (SIL) detection scheme, the proposed SRO radar sensor exhibit superior characteristics, such as lower power consumption, higher sensitivity, and reduced circuit complexity.
AB - A new kind of noncontact vital sign radar sensor based on super-regenerative oscillator (SRO) architecture is presented in this work. The proposed SRO vital sign radar sensor is designed to operate at the center frequency of 2.32 GHz, where two different quench signals, 100 Hz and 20 kHz, are employed to control the SRO radar sensor for target detection. By using the proposed SRO architecture, experimental results demonstrate that the displacement frequency of an actuator as well as human vital sign signals, including heartbeat and respiration rates, can be easily identified and extracted. Furthermore, compared with the self-injection-locked (SIL) detection scheme, the proposed SRO radar sensor exhibit superior characteristics, such as lower power consumption, higher sensitivity, and reduced circuit complexity.
KW - High sensitivity
KW - Low power
KW - Radar sensor
KW - Super-regenerative oscillator (SRO)
KW - Vital sign detection
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U2 - 10.1109/IMS30576.2020.9223944
DO - 10.1109/IMS30576.2020.9223944
M3 - Conference contribution
AN - SCOPUS:85094201259
T3 - IEEE MTT-S International Microwave Symposium Digest
SP - 651
EP - 654
BT - IMS 2020 - 2020 IEEE/MTT-S International Microwave Symposium
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 IEEE/MTT-S International Microwave Symposium, IMS 2020
Y2 - 4 August 2020 through 6 August 2020
ER -