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학술지 A 24 GHz ISM-Band Doppler Radar Antenna With High Isolation Characteristic for Moving Target Sensing Applications
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저자
김성필, 김동규, 김유진, 최재훈, 정경영
발행일
201907
출처
IEEE Antennas and Wireless Propagation Letters, v.18 no.7, pp.1532-1536
ISSN
1536-1225
출판사
IEEE
DOI
https://dx.doi.org/10.1109/LAWP.2019.2922008
협약과제
19ZH1500, 착용불편 해소를 위한 비접촉 착용 레이더의 Motion Artifact 제거 기술, 김유진
초록
A 24 GHz Industrial, Scientific, and Medical (ISM)-band Doppler radar antenna with high isolation is proposed for moving target sensing applications. Both transmit (Tx) and receive (Rx) antennas consist of 2 × 2 microstrip patch antenna arrays. High isolation of the proposed antenna is achieved by inserting periodic Jerusalem cross slot array between Tx port and Rx port, and thus the surface wave from Tx port to Rx port is significantly suppressed. The -10 dB reflection coefficient bandwidth of the proposed antenna is 510 MHz, and the isolation between Tx port and Rx port is higher than 36.7 dB over the 24 GHz ISM band. The simulated half-power beamwidths are 58.53째 for E-plane and 47.54째 for H-plane. Experimental results show that high isolation can lead to improve Doppler radar performance. The proposed antenna can be a good candidate for contact-free monitoring of the heart rate and respiration rate in healthcare applications.
KSP 제안 키워드
2.4 GHz, Doppler radar, E-Plane, H-Plane, Healthcare applications, Heart rate, ISM bands, Jerusalem cross, Microstrip Patch Antenna Arrays, Moving Target, Reflection Coefficient