Annular ring coupled circular patch with enhanced performance

D. M. Kokotoff, R. B. Waterhouse, C. R. Birtcher, James Aberle

Research output: Contribution to journalArticlepeer-review

39 Scopus citations


An annular ring loaded circular microstrip patch antenna is presented which reduces the excitation of surface waves. This configuration, as compared to a conventional circular patch, is no more difficult to fabricate, has a greater impedance bandwidth, much higher surface wave efficiency and higher gain. Both impedance behaviour and radiation characteristics of the modified patch are considered. Very good agreement between experiment and theory is achieved.

Original languageEnglish (US)
Pages (from-to)2000-2001
Number of pages2
JournalElectronics Letters
Issue number24
StatePublished - Nov 20 1997


  • Microstrip antennas
  • Patch antennas

ASJC Scopus subject areas

  • Electrical and Electronic Engineering


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