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Rectangular ring‐shaped dielectric resonator antenna for dual and wideband frequency
Author(s) -
Khalily Mohsen,
Rahim Mohamad Kamal A.,
Murad Norasniza A.,
Samsuri Nor Asmawati,
Kishk Ahmed A.
Publication year - 2013
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.27492
Subject(s) - wideband , dielectric resonator antenna , acoustics , antenna (radio) , dielectric resonator , ring (chemistry) , dual (grammatical number) , split ring resonator , dielectric , materials science , resonator , electrical engineering , electronic engineering , physics , engineering , art , chemistry , literature , organic chemistry
A new modified planar dielectric resonator antenna (DRA) is presented and investigated. The proposed DRA is excited by a microstrip feed that is extended as a probe in the proximity of the DR. On the opposite side to the probe excitation printed narrow strips directly connected to the ground plane edge are used to improve the radiation characteristics of the antenna by keeping a unidirectional broadside radiation. In addition, the short circuit strips introduce a second frequency band. Thus, a dual‐band antenna is achieved. The measured bandwidths are about 73% (2.78–5.95 GHz) for the wideband DRA as well as 8% (2.4–2.6 GHz) and 56% (3.3–5.85 GHz) for the dual‐band DRA. The minimum and maximum gain enhancements of about 0.6 and 1.2 dB from 3.5 to 6 GHz are obtained. Parametric study and measurement results are presented and discussed. © 2013 Wiley Periodicals, Inc. Microwave Opt Technol Lett 55:1077–1081, 2013; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.27492