The aim of this work is to present a circuit model to analyze and design ultra wideband (UWB) radars for the remote monitoring of breath activity. The model includes the impulse signal source, the transceiver antenna, the transmission medium, and the human thorax. First of all, the proposed model has been validated by comparing its responses with those achieved both numerically, with a commercial electromagnetic modeling software, and experimentally, by means of a setup based on an indirect time domain reflectometry system. Then, the model has been used for analyzing the feasibility of a UWB radar operating in the 36-GHz range with an effective isotropic radiated power lower than - 41.3dBm/MHz, i.e. within the limits issued by the United States Federal Communications Commission for unlicensed UWB imaging systems. The model outlined the possibility of the considered UWB radar of monitoring the breath activity of a subject up to distances of about 10m in open air. Copyright (C) 2011 John Wiley & Sons, Ltd.
A circuit model of an ultra wideband impulse radar system for breath-activity monitoring / Pisa, Stefano; Bernardi, Paolo Italo; Cavagnaro, Marta; Pittella, Erika; Piuzzi, Emanuele. - In: INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS. - ISSN 0894-3370. - STAMPA. - 25:1(2012), pp. 46-63. [10.1002/jnm.812]
A circuit model of an ultra wideband impulse radar system for breath-activity monitoring
PISA, Stefano;BERNARDI, Paolo Italo;CAVAGNARO, Marta;PITTELLA, ERIKA;PIUZZI, Emanuele
2012
Abstract
The aim of this work is to present a circuit model to analyze and design ultra wideband (UWB) radars for the remote monitoring of breath activity. The model includes the impulse signal source, the transceiver antenna, the transmission medium, and the human thorax. First of all, the proposed model has been validated by comparing its responses with those achieved both numerically, with a commercial electromagnetic modeling software, and experimentally, by means of a setup based on an indirect time domain reflectometry system. Then, the model has been used for analyzing the feasibility of a UWB radar operating in the 36-GHz range with an effective isotropic radiated power lower than - 41.3dBm/MHz, i.e. within the limits issued by the United States Federal Communications Commission for unlicensed UWB imaging systems. The model outlined the possibility of the considered UWB radar of monitoring the breath activity of a subject up to distances of about 10m in open air. Copyright (C) 2011 John Wiley & Sons, Ltd.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.