Miniaturized Circularly Polarized Doppler Radar for Human Vital Sign Detection

被引：47
作者：
He, Yuchu [1 ,2 ]
Gu, Changzhan [3 ]
Ma, Haijiang [1 ]
Zhu, Jiang [1 ]
Eleftheriades, George V. [4 ]
机构：
[1] Google LLC, Mountain View, CA 94043 USA
[2] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3H7, Canada
[3] Shanghai Jiao Tong Univ, Key Lab, Minist Educ Design & Electromagnet Compatibil Hig, Shanghai 200240, Peoples R China
[4] Univ Toronto, Dept Elect & Comp Engn, Toronto, ON M5S 3H7, Canada
来源：
IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION | 2019年 / 67卷 / 11期
关键词：
Radar antennas; Doppler radar; Polarization; Couplers; Gain; Circular polarization; patch antenna; HEARTBEAT; RESPIRATION;
D O I：
10.1109/TAP.2019.2927777
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, a miniaturized circularly polarized (CP) continuous wave Doppler radar system operating at 2.4 GHz is presented. The radar front end consists of one left-handed CP (LHCP) antenna and one right-handed CP (RHCP) antenna, which share a single patch antenna aperture. Orthogonal polarization is achieved through a modified ring-shaped quadrature hybrid coupler (QHC), and the resulting isolation between the two CP antennas is better than 30 dB. With 0 dBm input power to the transmitting antenna, the proposed radar system can accurately detect heartbeat and respiration movements of human test subjects under 1 m and over a wide angular range. The single dual CP antenna achieves 280 size reduction compared to a traditional two linear polarization patch antenna array with the same isolation level.
引用
收藏
页码：7022 / 7030
页数：9
相关论文
共 22 条
  • [1] Smart Homes that Monitor Breathing and Heart Rate
    Adib, Fadel
    Mao, Hongzi
    Kabelac, Zachary
    Katabi, Dina
    Miller, Robert C.
    [J]. CHI 2015: PROCEEDINGS OF THE 33RD ANNUAL CHI CONFERENCE ON HUMAN FACTORS IN COMPUTING SYSTEMS, 2015, : 837 - 846
  • [2] [Anonymous], 2012, Advanced Engineering Electromagnetics
  • [3] Balanis C.A., 2005, Antenna Theory: Design and Analysis
  • [4] Chin TY, 2010, IEEE MTT S INT MICR, P764, DOI 10.1109/MWSYM.2010.5516811
  • [5] Droitcour A, 2001, IEEE MTT S INT MICR, P175, DOI 10.1109/MWSYM.2001.966866
  • [6] Range correlation and I/Q performance benefits in single-chip silicon Doppler radars for noncontact cardiopulmonary monitoring
    Droitcour, AD
    Boric-Lubecke, O
    Lubecke, VM
    Lin, JS
    Kovacs, GTA
    [J]. IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 2004, 52 (03) : 838 - 848
  • [7] Low-Cost Differential Front-End for Doppler Radar Vital Sign Monitoring
    Fletcher, Rich
    Han, Jing
    [J]. 2009 IEEE/MTT-S INTERNATIONAL MICROWAVE SYMPOSIUM, VOLS 1-3, 2009, : 1325 - 1328
  • [8] Gabriel C., 1996, ALOETR1990004 KINGS
  • [9] Greneker EF, 1997, IEE CONF PUBL, P150, DOI 10.1049/cp:19971650
  • [10] Short-Range Noncontact Sensors for Healthcare and Other Emerging Applications: A Review
    Gu, Changzhan
    [J]. SENSORS, 2016, 16 (08)
123