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A 24 GHz ISM-Band Doppler Radar Antenna With High Isolation Characteristic for Moving Target Sensing Applications
- Issue Date
- Jul-2019
- Publisher
- IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
- Keywords
- Antenna array mutual coupling; biomedical applications of electromagnetic radiation; Doppler radar; microstrip antennas
- Citation
- IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, v.18, no.7, pp.1532 - 1536
- Indexed
- SCIE
SCOPUS
- Journal Title
- IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS
- Volume
- 18
- Number
- 7
- Start Page
- 1532
- End Page
- 1536
- ISSN
- 1536-1225
- Abstract
- 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 x 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 58.53 degrees for E-plane and 47.54 degrees 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.
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Related Researcher
- Jung, Kyung Young
- COLLEGE OF ENGINEERING (SCHOOL OF ELECTRONIC ENGINEERING)