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Cylindrical and conical ultra-wideband (UWB) dielectric resonator antennas are presented in this paper. The first part of this work is a parametric study of cylindrical and conical dielectric resonator antennas for Ultra-Large Band applications ranging from 3.1GHz to 10.6GHz. The second part of the work consists of creating a reconfigurable rejection band inside this UWB in order to minimize interference...
In this communication, we propose a miniaturized rectangular dielectric resonator antenna (RDRA) for wireless communication services (WCS). The studied structure consists of a rectangular Dielectric resonator stacked on a thick layer of dielectric material that has very high permittivity. The numerical analysis was done by two different electromagnetic modeling software; Ansoft HFSS and CST. The obtained...
The main objective of the present study is to achieve the reconfigurability of a cylindrical dielectric resonator antenna (CDRA). The CDRA is excited with two different modes; the HEMjjg mode is excited via an aperture etched on the ground under the center of the CDRA, where the TM01δ mode is excited from an etched slot under the side of the CDRA, the reconflgurabilty is realized using two PIN diodes...
In this article, a frequency reconfigurable fractal patch antenna using pin diodes is proposed and studied. The antenna structure has been designed on FR-4 low-cost substrate material of relative permittivity εr = 4.4, with a compact volume of 30×30×0.8 mm3. The bandwidth and resonance frequency of the antenna design will be increased when we exploit the fractal iteration on the patch antenna. This...
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