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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...
The cylindrical geometry can offer certain desirable antenna characteristics that are not provided by planar elements. In this paper a conformal omni-directional circular disc antenna which is mounted on a cylindrical surface feeding by a microstrip line is presented and proven to operate equally well compared to its planar rival. The return losses and the radiation pattern characteristics of the...
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