The design of a squarer-ring slot antenna for circular polarization

Research output: Contribution to journalArticlepeer-review

137 Citations (Scopus)


A new design of a circularly polarized square-ring slot antenna is proposed. The circular polarization is achieved by a series microstrip-line-feed configuration coupling to two orthogonal sides of the square-ring slot. A parametric study is conducted using a commercial simulation software based on the method of moments, and the design procedure is established. The required ground-plane size of the proposed design for a given frequency is also indicated. Three antenna prototypes respectively operated at distinct frequency bands are constructed and measured for providing the simulation validation. Experimental results show that the proposed antenna has good circularly polarized radiations and the 3 dB axial-ratio bandwidth is more than 6%.

Original languageEnglish
Pages (from-to)1967-1972
Number of pages6
JournalIEEE Transactions on Antennas and Propagation
Issue number6
Publication statusPublished - 2005 Jun 1

All Science Journal Classification (ASJC) codes

  • Electrical and Electronic Engineering

Fingerprint Dive into the research topics of 'The design of a squarer-ring slot antenna for circular polarization'. Together they form a unique fingerprint.

Cite this