Ultra-thin broadband OMT with turnstile junction

Yoji Aramaki*, Naofumi Yoneda, Moriyasu Miyazaki, Toshiyuki Horie

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

45 Citations (Scopus)


This paper presents an ultra-thin broadband waveguide orthomode transducer (OMT) for low profile reflector antenna feed systems. The presented OMT is composed of a turnstile junction with a metallic pyramid, a circular-to-square waveguide step, and thin combiners/ dividers. A broadband design of the OMT is performed by applying a circular-to-square waveguide step to obtain good match. An ultra-thin Ku-band OMT fabricated with the aid of the design techniques has realized wideband excellent performance with very low height, that is, VSWR less than 1.18 over 30% bandwidth and reducing the height to 20.2mm.

Original languageEnglish
Pages (from-to)47-50
Number of pages4
JournalIEEE MTT-S International Microwave Symposium Digest
Publication statusPublished - 2003
Externally publishedYes
Event2003 IEEE MTT-S International Microwave Symposium Digest - Philadelphia, PA, United States
Duration: 2003 Jun 82003 Jun 13

ASJC Scopus subject areas

  • Radiation
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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