Abstract

A model of the input impedance of the toroidal permeable antenna, which is the dual of the conventional metal loop antenna, is derived, starting from Schelkunoff's transmission line description of the loop antenna instead of the electrically small limit model. The input impedance for the dipole mode is expressed in a form that has a frequency independent resistor terminating a reactive network which is called the Darlington form. Since such a circuit mimics the input impedance of the dipole modes of the spherical mode expansion, it works very well as we go beyond the electrically small limit even for magnetic antennas as large as multiple wavelengths. The realistic feed loop contribution is explicitly accounted for and results are compared with fullwave simulations of a typical toroidal antenna which shows good agreement well beyond the electrically small limit.

Original languageEnglish (US)
Title of host publication2017 IEEE Antennas and Propagation Society International Symposium, Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2241-2242
Number of pages2
Volume2017-January
ISBN (Electronic)9781538632840
DOIs
StatePublished - Oct 18 2017
Event2017 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2017 - San Diego, United States
Duration: Jul 9 2017Jul 14 2017

Other

Other2017 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2017
CountryUnited States
CitySan Diego
Period7/9/177/14/17

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Keywords

  • Antenna theory
  • Closed form models
  • Conformal antennas
  • High efficiency
  • Magnetic antennas
  • Wideband antennas

ASJC Scopus subject areas

  • Radiation
  • Computer Networks and Communications
  • Instrumentation

Cite this

Yousefi, T., & Diaz, R. (2017). Closed-form model of extremely thin conformal magnetic antenna with high Gain-Bandwidth Product. In 2017 IEEE Antennas and Propagation Society International Symposium, Proceedings (Vol. 2017-January, pp. 2241-2242). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/APUSNCURSINRSM.2017.8073163