Design of a miniaturized dual-band textile antenna using characteristic modal analysis for on-body applications

Shankar Bhattacharjee, Manas Midya, Sekhar Ranjan Bhadra Chaudhuri and Monojit Mitra

Journal of Electromagnetic Waves and Applications, 2018, vol. 32, issue 18, 2415-2430

Abstract: A novel dual band textile antenna for ON body communication in the 2.45 and 5.8 GHz ISM bands is presented. The overall size of the antenna is 60 × 30 × 3.75 mm3 and the merit of the antenna lies in its design simplicity. To realize a small antenna size, the lower resonant frequency is generated by the ground plane which is larger than the radiator normally. The ground plane has been miniaturized with the addition of two alternate quarter wavelength slots placed parallel to each other. Through characteristic modal analysis, the ground plane of the antenna is optimized for radiating field parallel to the body which could facilitate ON body communication. The patch at the top has been folded in opposite directions to resonant at higher frequency. An equivalent circuit showing the working mechanism of the ground and the patch is shown. Simulation results were verified by measurement for the given antenna.

Date: 2018
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DOI: 10.1080/09205071.2018.1515038

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