DocumentCode :
1946076
Title :
Pattern switching compact patch antenna for on-body and off-body communications at 2.45 GHz
Author :
Chandran, Anupam R. ; Conway, Gareth A. ; Scanlon, William G.
Author_Institution :
Queen´´s Univ. of Belfast, Belfast
fYear :
2009
fDate :
23-27 March 2009
Firstpage :
2055
Lastpage :
2057
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.
Keywords :
antenna radiation patterns; body area networks; microstrip antennas; monopole antennas; bandwidth 217 MHz; bandwidth 253 MHz; frequency 2.45 GHz; impedance bandwidth; off-body wireless communication; on-body wireless communication; patch antenna; pattern switching; radiating modes; Antennas and propagation; Bandwidth; Body area networks; Communication switching; Impedance; Patch antennas; Pins; Switches; Wearable sensors; Wireless communication;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Antennas and Propagation, 2009. EuCAP 2009. 3rd European Conference on
Conference_Location :
Berlin
Print_ISBN :
978-1-4244-4753-4
Electronic_ISBN :
978-3-00-024573-2
Type :
conf
Filename :
5068021
Link To Document :
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