Development of Omnidirectional CP Antennas and Arrays: Invited

Wei Lin, Richard W. Ziolkowski

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

This paper summarizes the design concepts, operating principles, and application examples of advanced omnidirectional circularly polarized (OCP) antennas and arrays. The design of an OCP antenna with a figure eight-shaped pattern is introduced. It is realized by exciting two parallel-oriented electric and magnetic radiators with a 90° phase difference. The diameter of the loop current that generates the magnetic radiator is small, D approx {lambda}/10. As an applications example, a 28 GHz highly compact OCP antenna is reported for 5G Device-to-Device (D2D) communications. The design of an OCP antenna having a conical pattern is also discussed. The conical OCP pattern is realized when both the electric and magnetic radiators are placed above a ground plane. The diameter of the loop current is large, D approx 1 lambda. An example of a low profile and wideband OCP antenna radiating a conical pattern is demonstrated and its reconfigurable version is also discussed. Finally, an OCP array is presented that achieves high broadside directivity. It is based on an innovative method to realize collinear electric and magnetic radiators.

Original languageEnglish (US)
Title of host publication2019 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781728121680
DOIs
StatePublished - May 2019
Externally publishedYes
Event11th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2019 - Guangzhou, China
Duration: May 19 2019May 22 2019

Publication series

Name2019 International Conference on Microwave and Millimeter Wave Technology, ICMMT 2019 - Proceedings

Conference

Conference11th International Conference on Microwave and Millimeter Wave Technology, ICMMT 2019
Country/TerritoryChina
CityGuangzhou
Period5/19/195/22/19

Keywords

  • Antenna array
  • circular polarization
  • conical pattern
  • high directivity
  • monopolar patch
  • omnidirectional
  • reconfigurable

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Instrumentation

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