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Circularly polarized rectangular dielectric resonator antenna fed with unequal parallel microstrip lines for Wi‐MAX applications
Author(s) -
Chowdhury Rakesh,
Chaudhary Raghvendra Kumar
Publication year - 2017
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.30492
Subject(s) - microstrip , axial ratio , center frequency , dielectric resonator antenna , microwave , optics , microstrip antenna , physics , turnstile antenna , resonator , bandwidth (computing) , radiation , dielectric , circular polarization , antenna (radio) , optoelectronics , electrical engineering , antenna efficiency , engineering , telecommunications , band pass filter , quantum mechanics
In this article, a circularly polarized rectangular dielectric resonator antenna (RDRA) is proposed for Wi‐MAX applications. Unequal parallel Microstrip lines are used as feed circuit. In the proposed structure fundamental mode similar to TE 111 polarized in two orthogonal directions to generate orthogonal modes are generated. The proposed structure shows measured input impedance bandwidth ( S 11 < −10 dB) and axial ratio (AR < 3 dB) of 23.8% (at center frequency 3.31 GHz) and 9.2% (at center frequency 3.46 GHz), respectively. It exhibits excellent radiation pattern and average gain of 5.5 dB in working frequency range. The proposed design is suitable for Wi‐MAX applications (3.3–3.7 GHz). Radiation efficiency over 95% (3.3–3.6 GHz) is achieved in the proposed structure. © 2017 Wiley Periodicals, Inc. Microwave Opt Technol Lett 59:1182–1188, 2017