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J Electromagn Eng Sci > Volume 15(4); 2015 > Article
Journal of Electromagnetic Engineering and Science 2015;15(4):213-218.
DOI: https://doi.org/10.5515/JKIEES.2015.15.4.213   
Body-Worn Spiral Monopole Antenna for On-Body Communications
Nikolaj P.B. Kammersgaard1, Soren H. Kvist2, Jesper Thaysen2, Kaj B. Jakobsen1
1Department of Electrical Engineering, Electromagnetic Systems, Technical University of Denmark
2GN ReSound A/S
Abstract
A novel body-worn spiral monopole antenna is presented. The antenna consists of a ground plane and a spiral monopole. The antenna was designed for Ear-to-Ear (E2E) communication between In-the-Ear (ITE) hearing instruments at 2.45 GHz and has been simulated, prototyped, and measured. The antenna yielded a measured and simulated E2E path gain at 2.45 GHz of -82.1 dB and -85.9 dB, respectively. The radiation pattern of the antenna when mounted in the ear is presented and discussed.
Key words: Body-Centric Communication, Creeping Waves, In-the-Ear Hearing Instruments Antenna, On-Body Path Gain, WBAN

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