Electrically small circularly polarized spherical antenna with air core

O. S. Kim

Research output: Chapter in Book/Report/Conference proceedingArticle in proceedingsResearchpeer-review

1 Downloads (Pure)

Abstract

An electrically small circularly polarized self-resonant spherical antenna with air core is presented. The antenna is a modified multiarm spherical helix exciting TM10 and TE10 spherical modes with equal radiated power, and thus yielding perfect circular polarization over the entire far-field sphere (except the polar regions, where the radiation is low). The self-resonance is achieved by exciting higher-order TM modes, which provide the necessary electric stored energy in the near-field, while contributing negligibly to the far-field radiation of the antenna. The antenna has electrical size ka = 0.254, and its radiation quality factor Q is 1.76 times the Chu lower bound.
Original languageEnglish
Title of host publication2013 7th European Conference on Antennas and Propagation
PublisherIEEE
Publication date2013
Pages233-236
ISBN (Print)978-1-4673-2187-7
Publication statusPublished - 2013
Event2013 7th European Conference on Antennas and Propagation - Swedish Exhibition and Congress Centre, Gothenburg, Sweden
Duration: 8 Apr 201312 Apr 2013

Conference

Conference2013 7th European Conference on Antennas and Propagation
LocationSwedish Exhibition and Congress Centre
Country/TerritorySweden
CityGothenburg
Period08/04/201312/04/2013

Keywords

  • Electrically small antenna
  • Q-factor
  • Cirkular polarization

Fingerprint

Dive into the research topics of 'Electrically small circularly polarized spherical antenna with air core'. Together they form a unique fingerprint.

Cite this