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Performance enhancement for a broadband spiral antenna using a frequency‐selective surface and added backing cavity
Author(s) -
Chiu ChengNan,
Tseng ChienCheng
Publication year - 2012
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.26613
Subject(s) - spiral antenna , optics , antenna (radio) , spiral (railway) , broadband , materials science , coaxial antenna , antenna measurement , tunable metamaterials , microwave , optoelectronics , acoustics , dipole antenna , electrical engineering , physics , telecommunications , engineering , mechanical engineering , metamaterial
This article newly proposes to embed a frequency‐selective surface (FSS) in a backing cavity to reduce the back‐lobe level and depolarization deficiency of a broadband spiral antenna.For demonstration, a single‐arm rectangular spiral antenna backed by an FSS‐added cavity was created and studied. The cavity‐backed antenna has an enhanced main beam and an extremely low back lobe, in contrast with the original spiral antenna without cavity. In addition, the antenna backed by the FSS‐added cavity shows better performance, especially in the depolarization reduction and main‐beam enhancement, compared with the spiral antenna backed only by the cavity having no FSS. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:715–718, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26613