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A single‐FED slot‐aperture hybrid antenna for broadband circular polarization operations
Author(s) -
Lu YuChun,
Yu MingJe,
Lin YiCheng
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.26569
Subject(s) - optics , physics , wideband , microstrip antenna , slot antenna , antenna factor , patch antenna , antenna aperture , antenna measurement , coaxial antenna , antenna efficiency , planar , microstrip , radiation pattern , antenna (radio) , electrical engineering , engineering , computer science , computer graphics (images)
This article presents a microstrip‐fed slot‐aperture hybrid antenna for wideband circularly polarized (CP) operations. The antenna consists of a U‐shaped slot, a rectangular aperture, and a probing strip fed by a microstrip line. In general, the U‐shaped slot and the rectangular aperture resonate at two separate frequencies. When properly arranged, the proposed antenna may resonate over a single wideband of CP radiation. The 3‐dB axial ratio (AR) bandwidth of the presented antenna in free space is about 27% with the gain level about 34 dBic. When a planar reflector is incorporated for the desirable unidirectional pattern, the presented antenna has an enhanced gain about 7 dBic with a 3‐dB AR bandwidth of 25% and a front‐to‐back ratio of about 14 dB. Good agreement between measured and simulated results was achieved. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:412–415, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26569