A new approach to design high directivity, compact omnidirectional CP antenna arrays

Wei Lin, Richard W. Ziolkowski

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

Abstract

A new approach to design high directivty, compact omnidirectional circularly polarized (OCP) antenna arrays is presented in this paper. An array of collinear electric (E-) and magnetic (M-) radiators is realized by simply cascading copper loops and vertical strips to form an electrically long antenna structure. This array has two identical half sections that is excited in its center. The circumference of each loop and the length of each vertical strip are about a half-wavelength. The configuration facilitates the currents on all of the loop and the strip radiators to achieve the same phase and, hence, the array is a set of in-phase E-and M-radiators. Due to the fact that the phases of the magnetic radiator currents are 90° ahead of the electric ones, the 90° phase difference between the two subsets of radiators required to achieve OCP radiation is realized. An optimized prototype was fabricated and measured. The whole structure is compact and easily fabricated. It covers a 130 MHz bandwidth from 2.34 to 2.47 GHz and produces OCP radiation. The peak measured LHCP realized gain for the four-stage version is 5.1 dBic.

Original languageEnglish (US)
Title of host publication2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2019 - Proceedings
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages2157-2158
Number of pages2
ISBN (Electronic)9781728106922
DOIs
StatePublished - Jul 2019
Externally publishedYes
Event2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2019 - Atlanta, United States
Duration: Jul 7 2019Jul 12 2019

Publication series

Name2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2019 - Proceedings

Conference

Conference2019 IEEE International Symposium on Antennas and Propagation and USNC-URSI Radio Science Meeting, APSURSI 2019
Country/TerritoryUnited States
CityAtlanta
Period7/7/197/12/19

Keywords

  • Antenna array
  • Circular polarization
  • Electric radiators
  • High directivity
  • Magnetic radiators
  • Omnidirectional

ASJC Scopus subject areas

  • Computer Networks and Communications
  • Signal Processing
  • Instrumentation

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