Pattern switching compact patch antenna for on-body and off-body communications at 2.45 ghz

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Abstract

The ability to switch between propagating modes is important for body-centric applications such as medical body area networks where a single node may need to be able to optimise communications for either on-body sensor links or off-body links to the wider network. Therefore, we present a compact 2.45 GHz active mode-switching wearable antenna for both on-body and off-body wireless communications. The single-layer patch antenna was pattern-switched using shorting pins and had an impedance bandwidth of 253 MHz and 217 MHz for the on-body and off-body radiating modes, respectively. An efficiency of 57 % and 56.8 % was obtained for on-body and off-body mode respectively when placed in close proximity to a phantom that represents a muscle issue at 2.45 GHz.

Original languageEnglish
Title of host publicationEuropean Conference on Antennas and Propagation, EuCAP 2009, Proceedings
Pages2055-2057
Number of pages3
Publication statusPublished - 2009
Externally publishedYes
Event3rd European Conference on Antennas and Propagation, EuCAP 2009 - Berlin, Germany
Duration: 23 Mar 200927 Mar 2009

Publication series

NameEuropean Conference on Antennas and Propagation, EuCAP 2009, Proceedings

Conference

Conference3rd European Conference on Antennas and Propagation, EuCAP 2009
Country/TerritoryGermany
CityBerlin
Period23/03/0927/03/09

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