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Gain enhancement of a dual‐polarized dielectric resonator antenna using polarization independent FSS
Author(s) -
Rana Biswarup,
Chatterjee Ayan,
Parui Susanta Kumar
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.29832
Subject(s) - dielectric resonator antenna , ground plane , optics , bandwidth (computing) , resonator , antenna gain , microstrip antenna , microstrip , dielectric resonator , materials science , physics , antenna (radio) , optoelectronics , electrical engineering , telecommunications , antenna factor , engineering
A dual‐polarized dielectric resonator antenna (DRA) fed by two orthogonal microstrip lines has been explored employing coupled‐resonator spatial filter (CRSF) frequency selective surface (FSS) as superstrate which, to the best of our knowledge, is reported for the first time. The DRA with ε r = 20 has been used as a primary radiator, excites fundamental TE 111 mode. A CRSF FSS has been placed above the ground plane at a distance of half wavelength and a 3.4 dBi increased gain has been found compared to the gain without FSS. Using Arlon AD270 both the antenna and the FSS have been fabricated and experimental measurements have been carried out. The proposed antenna with FSS offers an impedance bandwidth of 5.1% covering frequency from 6.4 to 6.74 GHz with a maximum gain of 8.9 dBi at the resonant frequency for the port1. For the port2, the DRA with FSS resonates at 6.54 GHz with an impedance bandwidth of 5.3% covering frequency from 6.37 to 6.72 GHz. A good agreement has been observed between the measured and simulated results. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:1415–1420, 2016