Robust, wearable, on-body antenna relying on half mode substrate integrated waveguide techniques

A compact, robust, wearable antenna for body-worn applications in the 2.4 GHz Industrial Medical and Scientific band is designed, fabricated and tested. This novel compact textile cavity backed slot antenna combines a half-mode substrate integrated waveguide topology with an additional row of shorti...

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Bibliographic Details
Published in2014 IEEE Antennas and Propagation Society International Symposium (APSURSI) pp. 313 - 314
Main Authors Agneessens, Sam, Rogier, Hendrik, Moro, Riccardo, Bozzi, Maurizio
Format Conference Proceeding
LanguageEnglish
Published IEEE 01.07.2014
Subjects
Antenna measurements
Cavity resonators
Robustness
Slot antennas
Substrates
Textiles
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ISBN9781479935383
1479935387
ISSN1522-3965
DOI10.1109/APS.2014.6904488

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Summary:A compact, robust, wearable antenna for body-worn applications in the 2.4 GHz Industrial Medical and Scientific band is designed, fabricated and tested. This novel compact textile cavity backed slot antenna combines a half-mode substrate integrated waveguide topology with an additional row of shorting vias for miniaturization. Excellent free space performance is achieved with a measured 4.6 % impedance bandwidth, maximal gain of 4.7 dBi and radiation efficiency of 81.3 %. On-body measurements reveal minimal frequency detuning when the antenna is worn by a test subject as well as a negligible impedance bandwidth reduction to 4.5 %. The low calculated Specific Absorption Rate of 0.51 W/kg averaged over 1 g of tissue demonstrates high antenna body isolation. Therefore, this design is an attractive option as antenna in smart textile systems.
ISBN:9781479935383
1479935387
ISSN:1522-3965
DOI:10.1109/APS.2014.6904488