Design and Measurement of a 2.45 Ghz On-Body Antenna Optimized for Hearing Instrument Applications

Søren Helstrup Kvist, Kaj Bjarne Jakobsen, Jesper Thaysen

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Abstract

A balanced PIFA-inspired antenna design is presented for use with the 2:45 GHz ear-to-ear radio channel. The antenna
is designed such that the radiated electric fields are primarily polarized normal to the surface of the head, in order to obtain a high on-body path gain (jS21 j). The antenna structure can be made conformal to the outer surface of a hearing instrument, such that the bandwidth of the antenna is optimized given the available volume. The radiation patterns, ear-to-ear path gain and available bandwidth is measured and compared to the simulated results. It is found that the antenna obtains a relatively high ear-to-ear on-body path gain, as well as a bandwidth that is large enough to cover the entire 2:45 GHz ISMband.
Original languageEnglish
Title of host publication34th Annual Antenna Measurement Techniques Association Symposium 2012
Publication date2012
Pages33-37
Publication statusPublished - 2012
Event34th Annual Antenna Measurement Techniques Association Symposium 2012 - Bellevue, Washington, United States
Duration: 21 Oct 201226 Oct 2012

Conference

Conference34th Annual Antenna Measurement Techniques Association Symposium 2012
CountryUnited States
CityBellevue, Washington
Period21/10/201226/10/2012

Keywords

  • Antenna Design
  • Ear-to-ear
  • Bandwidth
  • Bodycentric
  • Measurement
  • On-Body
  • Polarization
  • WBAN

Cite this

Kvist, S. H., Jakobsen, K. B., & Thaysen, J. (2012). Design and Measurement of a 2.45 Ghz On-Body Antenna Optimized for Hearing Instrument Applications. In 34th Annual Antenna Measurement Techniques Association Symposium 2012 (pp. 33-37)