Dual-frequency microstrip antenna with dual circular polarisation

C. H. Cai, Jeen-Sheen Row, K. L. Wong

Research output: Contribution to journalArticlepeer-review

14 Citations (Scopus)


A single-feed dual-frequency microstrip patch antenna that can produce dual circular polarisations (CP) is presented. The microstrip antenna has an annular-ring patch and is excited by an L-shaped microstrip line through the coupling of a ring slot in the ground plane. The occurrence of the dual CP is because the magnetic currents circulating along the ring slot at two specific frequencies have opposite flowing directions. Both simulated and measured results are provided to validate the CP performance of the proposed antenna.

Original languageEnglish
Pages (from-to)1261-1262
Number of pages2
JournalElectronics Letters
Issue number22
Publication statusPublished - 2006 Nov 8

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

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