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60-GHz Millimeter-Wave Life Detection System (MLDS) for Noncontact Human Vital-Signal Monitoring

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6 Author(s)
Huey-Ru Chuang ; Dept. of Electr. Eng., Nat. Cheng Kung Univ., Tainan, Taiwan ; Hsin-Chih Kuo ; Fu-Ling Lin ; Tzuen-Hsi Huang
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A first reported experimental study of a 60 GHz millimeter-wave life detection system (MLDS) for noncontact human vital-signal monitoring is presented. This detection system is constructed by using V-band millimeter-wave waveguide components. A clutter canceller is implemented in the system with an adjustable attenuator and phase shifter. It performs clutter cancellation for the transmitting power leakage from the circulator and background reflection to enhance the detecting sensitivity of weak vital signals. The noncontact vital signal measurements have been conducted on a human subject in four different physical orientations from distances of 1 and 2 m. The time-domain and spectrum waveforms of the measured breathing and heartbeat are presented. This prototype system will be useful for the development of the 60-GHz CMOS MLDS detector chip design.

Published in:

Sensors Journal, IEEE  (Volume:12 ,  Issue: 3 )

Date of Publication:

March 2012

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