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Broadband gap‐coupled half‐hexagonal microstrip antenna fed by microstrip‐line resonator
Author(s) -
Rathod S. M.,
Awale R. N.,
Ray K. P.,
Chaudhari Amar D.
Publication year - 2018
Publication title -
international journal of rf and microwave computer‐aided engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.335
H-Index - 39
eISSN - 1099-047X
pISSN - 1096-4290
DOI - 10.1002/mmce.21273
Subject(s) - ground plane , microstrip , microstrip antenna , return loss , broadband , center frequency , patch antenna , resonator , bandwidth (computing) , dielectric resonator antenna , feed line , optics , materials science , physics , optoelectronics , acoustics , antenna (radio) , telecommunications , engineering , band pass filter
Half‐hexagonal microstrip antenna (H‐HMSA) is a compact version of HMSA, as it resonates at the same fundamental mode frequency. In this article, a compact configuration of a single layer, broadband gap‐coupled H‐HMSA has been proposed. Gap‐coupled H‐HMSA is fed indirectly by a λ/2 microstrip‐line resonator. Broad bandwidth (BW) is achieved with an effective use of resonance introduced by λ/2 resonator and gap‐coupled half‐hexagonal radiating patches. A peak gain of 7.07 dBi and measured BW ( S 11 ≤ −10 dB) of 11.5% at the center frequency of 5.2 GHz have been achieved, which occupies a small volume of 0.023 λ 0 3 including the ground plane. The radiation patterns remain in the broadside direction throughout the return loss BW. Simulated results of the proposed antenna configuration are experimentally validated with good agreement.