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A wideband circularly polarized dielectric resonator antenna excited with conformal‐strip and inverted L‐shaped microstrip‐feed‐line for WLAN/WI‐MAX applications
Author(s) -
Kumar Rajkishor,
Kumar Chaudhary Raghvendra
Publication year - 2016
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.30085
Subject(s) - dielectric resonator antenna , microstrip antenna , microstrip , wideband , optics , patch antenna , circular polarization , axial ratio , physics , feed line , turnstile antenna , center frequency , coaxial antenna , electrical engineering , resonator , antenna (radio) , engineering , band pass filter
A new wideband circularly polarized dielectric resonator antenna (DRA) has been developed and presented in this article. The proposed antenna consisting rectangular and cubical‐shaped dielectric resonator (DR) with optimum gap excited by using combination of conformal‐strip and inverted L‐shaped microstrip‐feed‐line. The combinations of two different feeds (i.e., conformal‐strip and microstrip‐fed‐line) excite orthogonal modes in two DRs to generate circular polarization. The gap between these DRs and conformal strip offers wideband of impedance and axial ratio bandwidth. Designed antenna offers measured −10 dB impedance bandwidth of 27.36% (at center frequency 5.78 GHz) and measured 3‐dB axial ratio bandwidth has been achieved in broadside direction of 23.00% (at center frequency 5.65 GHz). It has been confirmed from the radiation pattern that the antenna having right hand circular polarization (RHCP). Proposed antenna can be used for wireless communication systems such as WLAN/Wi‐MAX applications. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2525–2531, 2016