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Proceedings Paper

Millimeter wave I-Q standoff biosensor
Author(s): Shaolin Liao; Sasan Bakhtiari; Thomas Elmer; Apostolos C. Raptis; Ilya V. Mikhelson; Alan V. Sahakian
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Paper Abstract

A continuous wave (CW) 94-GHz millimeter wave (mmW) standoff biosensor has been developed for remote biometric sensing applications. The sensor measures the demodulated in-phase (I) and quadrature-phase (Q) components of the received reflected mmW signal from a subject. Both amplitude and phase of the reflected signal are obtained from downconverted I and Q channels from the quadrature mixer. The mmW sensor can faithfully monitor human vital signs (heartbeat and respiration) at relatively long standoff distances. Principle Component Analysis (PCA) is used to extract the heartbeat, the respiration and the body motion signals. The approach allows one to deduce information about amplitude and beat-to-beat rate of the respiration and the heartbeat. Experimental results collected from a subject were analyzed and compared to the signal obtained with a three-electrode ECG monitoring instrument.

Paper Details

Date Published: 5 May 2012
PDF: 8 pages
Proc. SPIE 8371, Sensing Technologies for Global Health, Military Medicine, Disaster Response, and Environmental Monitoring II; and Biometric Technology for Human Identification IX, 83711D (5 May 2012); doi: 10.1117/12.924241
Show Author Affiliations
Shaolin Liao, Argonne National Lab. (United States)
Sasan Bakhtiari, Argonne National Lab. (United States)
Thomas Elmer, Argonne National Lab. (United States)
Apostolos C. Raptis, Argonne National Lab. (United States)
Ilya V. Mikhelson, Northwestern Univ. (United States)
Alan V. Sahakian, Northwestern Univ. (United States)


Published in SPIE Proceedings Vol. 8371:
Sensing Technologies for Global Health, Military Medicine, Disaster Response, and Environmental Monitoring II; and Biometric Technology for Human Identification IX
Sárka O. Southern; B. V. K. Vijaya Kumar; Salil Prabhakar; Arend H. J. Kolk; Kevin N. Montgomery; Arun A. Ross; Carl W. Taylor, Editor(s)

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