Noncontact vital-sign radar sensor using metamaterial-based scanning leaky-wave antenna

In this paper, a metamaterial-based scanning leaky-wave antenna is developed, and then applied to the Doppler radar system for the noncontact vital-sign detection. With the benefit of the antenna beam scanning, the radar system can not only sense human subject, but also detect the vital signs within...

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Bibliographic Details
Published in2016 IEEE MTT-S International Microwave Symposium (IMS) pp. 1 - 3
Main Authors Chao-Hsiung Tseng, Chia-Hung Chao
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.05.2016
Subjects
Antenna measurements
Doppler radar
Doppler radar sensor
Leaky wave antennas
leaky-wave antenna
Metamaterial
Radar antennas
Receiving antennas
scanning antenna
Transmitting antennas
vital sign detection
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Summary:In this paper, a metamaterial-based scanning leaky-wave antenna is developed, and then applied to the Doppler radar system for the noncontact vital-sign detection. With the benefit of the antenna beam scanning, the radar system can not only sense human subject, but also detect the vital signs within the specific scanning region. The Doppler radar module is designed at 5.8 GHz, and implemented by commercial integrated circuits and coplanar waveguide (CPW) passive components. Two scanning antennas are then connected with the transmitting and receiving ports of the module, respectively. In addition, since the main beam of the developed scanning antenna is controlled by the frequency, one can easily tune the frequency of the radar source from 5.1 to 6.5 GHz to perform the 59° spatial scanning. The measured respiration and heartbeat rates are in good agreement with the results acquired from the medical finger pulse sensor.
DOI:10.1109/MWSYM.2016.7540008