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2022-08-09
Synthesizing Radiation Properties of Dual-Band Dual-Mode High Gain Dielectric Resonator Antenna for Wireless Applications
By
Progress In Electromagnetics Research C, Vol. 122, 153-164, 2022
Abstract
In this article, the radiation properties of a slot-loaded cylindrical dielectric resonator antenna (CDRA) have been synthesized strategically to realize a dual-band operation with a higher gain. A microstrip line based aperture coupled feed is adopted to excite dual modes at 4.8 GHz and 8.28 GHz with an impedance bandwidth of 5.84% (280 MHz) and 10.62% (880 MHz), respectively. A superstrate layer is placed at a suitable gap above the antenna structure to enhance the antenna gain by utilizing the principle of multiple reflections. For the further improvement of gain, a plus-shaped slot is incorporated on the superstrate that helps to concentrate the radiated field at the center of the superstrate, thereby the directivity of the CDRA has been enhanced on a large scale. The proposed structure is fabricated and measured for experimental verifications that demonstrate 3 dB augmentations in antenna peak gain in comparison to the conventional CDRA. The experimental result shows a good agreement with the simulated ones. Higher measured peak gains of 7.87 dBi and 7.91 dBi at two operating bands ensure the applicability of the proposed simple structure for C-band high gain wireless applications.
Citation
Juin Acharjee, Shreya Chatterjee, Nipun Kumar Mishra, Gouri Shankar Paul, and Kaushik Mandal, "Synthesizing Radiation Properties of Dual-Band Dual-Mode High Gain Dielectric Resonator Antenna for Wireless Applications," Progress In Electromagnetics Research C, Vol. 122, 153-164, 2022.
doi:10.2528/PIERC22053102
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