@inproceedings{f576b86205314a9daec1a45c5f7a7bba,
title = "Millimeter wave I-Q standoff biosensor",
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.",
keywords = "CW, ECG, Millimeter wave, PCA, Quadrature mixer",
author = "Shaolin Liao and Sasan Bakhtiari and Thomas Elmer and Raptis, {Apostolos C.} and Mikhelson, {Ilya V.} and Sahakian, {Alan V.}",
year = "2012",
month = jul
day = "23",
doi = "10.1117/12.924241",
language = "English (US)",
isbn = "9780819490490",
series = "Proceedings of SPIE - The International Society for Optical Engineering",
booktitle = "Sensing Technologies for Global Health, Military Medicine, Disaster Response, and Environmental Monitoring II; and Biometric Technology for Human Identification IX",
note = "Sensing Technologies for Global Health, Military Medicine, Disaster Response, and Environmental Monitoring II; and Biometric Technology for Human Identification IX ; Conference date: 23-04-2012 Through 25-04-2012",
}