Improved rear-radiating waveguide cup feeds

G. T. Poulton*, T. S. Bird

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)


An improved rear-radiating coaxial waveguide feed is described with application to small compact antennas. The antenna feed comprises a coaxial waveguide radiator with a center conductor extending to the reflector vertex. A coaxial waveguide operating in the TE//1 //1 mode is excited by circular waveguide. The radiation pattern is modified by adjusting the length of the cup rim, or by using a coaxial slot. The various regions may be dielectric-loaded, providing increased design flexibility as well as mechanical support for the cup.

Original languageEnglish
Pages (from-to)79-82
Number of pages4
JournalIEEE Antennas and Propagation Society, AP-S International Symposium (Digest)
Publication statusPublished - 1986
Externally publishedYes


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