Broadband dual-polarized proximity coupled circular patch antenna

S. Gao, A. Sambell

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


This paper presents the design and results of a novel broadband dual-polarized circular patch antenna. The antenna is fed by microstrip lines through proximity coupling, and H-shaped slots are cut in the ground plane below the feed lines for enhancing the coupling between the patch and the feed lines. By using only a single circular microstrip patch, the prototype antenna yields bandwidth of 21.5% and 25.9% at the input ports 1 and 2, respectively. The isolation between two input ports is below -30 dB across the bandwidth. Good broadside radiation patterns are observed, and the cross-polar levels are below -20 dB at both E- and H-planes. Due to its simple structure, it is easy to form arrays by using this antenna as an element.

Original languageEnglish
Pages (from-to)298-302
Number of pages5
JournalMicrowave and Optical Technology Letters
Issue number3
Early online date1 Sep 2005
Publication statusPublished - 5 Nov 2005
Externally publishedYes

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