Design and development of a dual-mode corrugated horn for an offset reflector antenna

✍ Scribed by S. B. Sharma; Dhaval Pujara; S. B. Chakrabarty

• Publisher: John Wiley and Sons
• Year: 2010
• Tongue: English
• Weight: 383 KB
• Volume: 52
• Category: Article
• ISSN: 0895-2477
• DOI: 10.1002/mop.24852

✦ Synopsis

Abstract

This article presents the design and radiation characteristics of a dual‐mode corrugated matched feed horn. This type of feed eliminates the unwanted high cross‐polarization of an offset parabolic reflector antenna and improves the overall performance of the antenna sub‐system. In a cylindrical corrugated structure, higher order HE~21~ mode is added with the fundamental HE~11~ mode to configure a dual‐mode corrugated horn. For the proposed horn, the return‐loss characteristics and the far‐field radiation patterns were measured and the results are compared with the simulated results. The horn has been used as a primary feed device to illuminate a linearly polarized offset parabolic reflector antenna and the improvement in the cross‐polarization has been estimated. © 2009 Wiley Periodicals, Inc. Microwave Opt Technol Lett 52: 113–116, 2010; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24852