Resonant cavity antennas

Raheel M. Hashmi, Karu P. Esselle

Research output: Chapter in Book/Report/Conference proceedingChapterpeer-review


This article introduces resonant cavity antennas (RCAs) and leads the reader to develop an operational understanding of the design processes and considerations related to various types of RCAs. RCAs are a class of medium‐to‐high gain antennas, often having a single excitation location (as opposed to antenna arrays) and a simple configuration. These are a convenient alternative to antenna arrays and reflector antennas in space‐constrained applications where robustness, performance, and aesthetic appeal are equally important. The article discusses recent research results and trends particularly focusing on advances that have the potential to yield practical advantages, such as compactness, low profile, and high efficiency. The article reviews progress on gain bandwidth enhancement, achieving high aperture efficiency, multiband operation, and methods for aperture phase correction in RCAs.
Original languageEnglish
Title of host publicationWiley encyclopedia of electrical and electronics engineering
EditorsJohn G. Webster
Place of PublicationChichester
PublisherJohn Wiley & Sons
Number of pages20
ISBN (Electronic)9780471346081
Publication statusPublished - 21 Feb 2019


  • resonant cavity antenna
  • fabry–perot antenna
  • electromagnetic bandgap (EBG) antenna
  • 2‐D leaky‐wave antenna
  • partially reflecting surface (PRS)


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