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Dielectric resonator antenna with top loaded parasitic strip elements for dual‐band operation
Author(s) -
Iqbal Amjad,
Bouazizi Amal,
Kundu Surajit,
Elfergani Issa,
Rodriguez Jonathan
Publication year - 2019
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.31876
Subject(s) - dielectric resonator antenna , multi band device , strips , miniaturization , antenna (radio) , materials science , dielectric , resonator , optoelectronics , optics , electrical engineering , physics , engineering , composite material
In this article, a dual‐band hybrid cylindrical dielectric resonator antenna (CDRA) is designed, analyzed, and experimentally validated. Miniaturization and dual‐band frequency behavior are achieved by loading circular copper strips on top of the CDRA. Hence, the antenna resonates at 4.4 and 6.1 GHz covering −10 dB bandwidths of 600 MHz and 500 MHz, respectively. The proposed CDRA is excited using a rectangular slot for HEM Y 11 and HEM X 11 modes. The proposed antenna demonstrates good gain (4.9 dBi at 4.4 GHz and 5.6 dBi at 6.1 GHz), high efficiency (>88% for all operating bands), and good FTBR (>10.08 dB in both principal planes for both operating bands). Moreover, the higher frequency band can be independently controlled by adjusting the parasitic strips width (d) and gap (g).