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Design and development of a dual‐mode corrugated horn for an offset reflector antenna
Author(s) -
Sharma S. B.,
Pujara Dhaval,
Chakrabarty S. B.
Publication year - 2010
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.24852
Subject(s) - feed horn , offset dish antenna , horn antenna , offset (computer science) , optics , parabolic antenna , microwave , cassegrain antenna , radiation pattern , radiation , parabolic reflector , engineering , return loss , french horn , reflector (photography) , periscope antenna , physics , acoustics , electrical engineering , antenna (radio) , telecommunications , slot antenna , computer science , light source , programming language
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