Bandwidth-enhanced of a very simple circularly polarized square slot antenna with offset feed and modified ground plane

Jie Liu, Jian Ying Li, Rui Xu, Du Juan Wei

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

In this paper, a simple wideband circularly polarized (CP) square slot antenna is presented. This antenna is made up of an offset-center 50-Ω microstrip-fed port and a modified ground plane. Both the impedance bandwidth (IBW) and the 3-dB axial ratio bandwidth (ARBW) are greatly improved after adjusting the position of microstrip-fed port. By appropriately adding and cutting on the ground plane, the ARBW is greatly broadened. To verify this design, the CP antenna is fabricated and measured. The measured results of the antenna exhibit an IBW of 101.5% (1.35∼4.13 GHz), an ARBW of 85.7% (1.6∼4.0 GHz). And the measured peak gain can reach 4.2 dBic. The proposed antenna is very suitable for wideband CP communication applications.

Original languageEnglish
Title of host publication2017 IEEE 6th Asia-Pacific Conference on Antennas and Propagation, APCAP 2017 - Proceeding
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages1-3
Number of pages3
ISBN (Electronic)9781538616086
DOIs
StatePublished - 25 Jul 2018
Event6th IEEE Asia-Pacific Conference on Antennas and Propagation, APCAP 2017 - Xi'an, China
Duration: 16 Oct 201719 Oct 2017

Publication series

Name2017 IEEE 6th Asia-Pacific Conference on Antennas and Propagation, APCAP 2017 - Proceeding

Conference

Conference6th IEEE Asia-Pacific Conference on Antennas and Propagation, APCAP 2017
Country/TerritoryChina
CityXi'an
Period16/10/1719/10/17

Keywords

  • broadband
  • Circularly polarized (CP)
  • slot antenna

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