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International Journal of Telemedicine and Applications
Volume 2008 (2008), Article ID 328597, 10 pages
http://dx.doi.org/10.1155/2008/328597
Research Article

Feasibility Study and Design of a Wearable System-on-a-Chip Pulse Radar for Contactless Cardiopulmonary Monitoring

1Radio-frequency and Microwave Integrated Circuits Laboratory (RFLab), Department of Information Engineering (DIIEIT), University of Pisa, Via Caruso 16, 56122 Pisa, Italy
2Dipartimento di Informatica, Matematica, Elettronica e Trasporti (DIMET), Università “Mediterranea” di Reggio Calabria, Via Graziella, Feo di Vito, 89060 Reggio Calabria, Italy
3Interdepartmental Research, Center E. Piaggio, University of Pisa, Via Diotisalvi 2, 56122 Pisa, Italy

Received 28 September 2007; Accepted 15 January 2008

Academic Editor: Sajid Hussain

Copyright © 2008 Domenico Zito et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

A new system-on-a-chip radar sensor for next-generation wearable wireless interface applied to the human health care and safeguard is presented. The system overview is provided and the feasibility study of the radar sensor is presented. In detail, the overall system consists of a radar sensor for detecting the heart and breath rates and a low-power IEEE 802.15.4 ZigBee radio interface, which provides a wireless data link with remote data acquisition and control units. In particular, the pulse radar exploits 3.1–10.6 GHz ultra-wideband signals which allow a significant reduction of the transceiver complexity and then of its power consumption. The operating principle of the radar for the cardiopulmonary monitoring is highlighted and the results of the system analysis are reported. Moreover, the results obtained from the building-blocks design, the channel measurement, and the ultra-wideband antenna realization are reported.