A 24 GHz ISM-Band Doppler Radar Antenna With High Isolation Characteristic for Moving Target Sensing Applications

Sungpeel Kim, Dong Kyoo Kim, Youjin Kim, Jaehoon Choi, Kyung-Young Jung

Research output: Contribution to journalArticleResearchpeer-review

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 × 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° for E-plane and 47.54° 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.

Original languageEnglish
Article number8734749
Pages (from-to)1532-1536
Number of pages5
JournalIEEE Antennas and Wireless Propagation Letters
Volume18
Issue number7
DOIs
StatePublished - 2019 Jul 1

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Radar antennas
Doppler radar
Antennas
Microstrip antennas
Antenna arrays
Surface waves
Bandwidth
Monitoring

Keywords

  • Antenna array mutual coupling
  • Doppler radar
  • biomedical applications of electromagnetic radiation
  • microstrip antennas

Cite this

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title = "A 24 GHz ISM-Band Doppler Radar Antenna With High Isolation Characteristic for Moving Target Sensing Applications",
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 × 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° for E-plane and 47.54° 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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A 24 GHz ISM-Band Doppler Radar Antenna With High Isolation Characteristic for Moving Target Sensing Applications. / Kim, Sungpeel; Kim, Dong Kyoo; Kim, Youjin; Choi, Jaehoon; Jung, Kyung-Young.

In: IEEE Antennas and Wireless Propagation Letters, Vol. 18, No. 7, 8734749, 01.07.2019, p. 1532-1536.

Research output: Contribution to journalArticleResearchpeer-review

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AU - Kim, Sungpeel

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AU - Kim, Youjin

AU - Choi, Jaehoon

AU - Jung, Kyung-Young

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AB - 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 58.53° for E-plane and 47.54° 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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