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Broadband circularly polarized gap‐coupled arrangement of rectangular patches for modern communication systems
Author(s) -
Sekra Pratibha,
Shekhawat S.,
Bhatnagar D.,
Saxena V.K.,
Saini J. S.,
Joshi L. M.
Publication year - 2011
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.26398
Subject(s) - broadband , bandwidth (computing) , microwave , circular polarization , optics , wimax , turnstile antenna , axial ratio , radiation , physics , excited state , engineering , telecommunications , optoelectronics , electrical engineering , radiation pattern , microstrip , slot antenna , antenna (radio) , wireless , atomic physics
The radiation performance of broadband circularly polarized gap‐coupled arrangement of rectangular patches is reported in this article. This arrangement of patches is designed on glass epoxy FR‐4 substrate. The considered structure consists of three rectangular patches having separation “d” between them. The central designed patch is excited through a single inset feed point while the other two patches are gap coupled to the central patch. After extensive optimizations, it is realized that the considered structure resonates at two closely spaced frequencies lying in the median band for the WiMax communication systems approved by IEEE 802.16 Working Group and presents nearly 12% impedance bandwidth. Additionally, the radiations are circularly polarized in nature, though the axial ratio bandwidth is narrow. The radiation patterns in the entire bandwidth are identical in nature. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 53:2935–2939, 2011; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26398