Design guidelines for radio frequency non-contact vital sign detection

Changzhi Li, Yanming Xiao, Jenshan Lin

Research output: Chapter in Book/Report/Conference proceedingConference contribution

14 Scopus citations

Abstract

The design guidelines for non-contact vital sign detection are presented in this paper. Firstly, the choice of radio frequency and antenna beamwidth is demonstrated by numerical simulation based on ray-tracing technique and spectrum analysis. Guided by the numerical results of the first part, three typical radar architectures are recently built in one of the ISM bands (the 5.8 GHz band). The characteristics of each architecture are demonstrated and compared based on measurement results. Experiments show that direct-conversion non-quadrature architecture has DC offset and null detection point problem; direct-conversion quadrature architecture can eliminate null detection point but lead to complexity and higher power consumption in effectively combining two quadrature channels. Double-sideband indirect-conversion with simpler radio architecture and less baseband requirement can effectively alleviate the DC offset and null detection point problems.

Original languageEnglish
Title of host publication29th Annual International Conference of IEEE-EMBS, Engineering in Medicine and Biology Society, EMBC'07
Pages1651-1654
Number of pages4
DOIs
StatePublished - 2007
Event29th Annual International Conference of IEEE-EMBS, Engineering in Medicine and Biology Society, EMBC'07 - Lyon, France
Duration: Aug 23 2007Aug 26 2007

Publication series

NameAnnual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings
ISSN (Print)0589-1019

Conference

Conference29th Annual International Conference of IEEE-EMBS, Engineering in Medicine and Biology Society, EMBC'07
CountryFrance
CityLyon
Period08/23/0708/26/07

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  • Cite this

    Li, C., Xiao, Y., & Lin, J. (2007). Design guidelines for radio frequency non-contact vital sign detection. In 29th Annual International Conference of IEEE-EMBS, Engineering in Medicine and Biology Society, EMBC'07 (pp. 1651-1654). [4352624] (Annual International Conference of the IEEE Engineering in Medicine and Biology - Proceedings). https://doi.org/10.1109/IEMBS.2007.4352624