A twin spiral planar antenna for UWB medical radars

Zito, Giuseppe A.; Staderini, Enrico M.; Pisa, Stefano (2013). A twin spiral planar antenna for UWB medical radars. International Journal of Antennas and Propagation, 2013, pp. 1-6. 10.1155/2013/684185

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A planar-spiral antenna to be used in an ultrawideband (UWB) radar system for heart activity monitoring is presented. The antenna, named “twin,” is constituted by two spiral dipoles in a compact structure. The reflection coefficient at the feed point of the dipoles is lower than −8 dB over the 3–12 GHz band, while the two-dipoles coupling is about −20 dB. The radiated beam is perpendicular to the plane of the spiral, so the antenna is wearable and it may be an optimal radiator for a medical UWB radar for heart rate detection. The designed antenna has been also used to check some hypotheses about the UWB radar heart activity detection mechanism. The radiation impedance variation, caused by the thorax vibrations associated with heart activity, seems to be the most likely explanation of the UWB radar operation.

Item Type:

Journal Article (Original Article)

Division/Institute:

10 Strategic Research Centers > ARTORG Center for Biomedical Engineering Research > ARTORG Center - Gerontechnology and Rehabilitation

UniBE Contributor:

Zito, Giuseppe

Subjects:

600 Technology > 610 Medicine & health
600 Technology > 620 Engineering

Language:

English

Submitter:

Giuseppe Angelo Zito

Date Deposited:

15 Apr 2014 08:41

Last Modified:

26 Jun 2016 01:50

Publisher DOI:

10.1155/2013/684185

Uncontrolled Keywords:

planar antenna, arhimedean spiral, heart rate detection, wearable system

BORIS DOI:

10.7892/boris.47636

URI:

https://boris.unibe.ch/id/eprint/47636

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