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In this article, a new design of a compact printed rectangular antenna for wireless local area network (WLAN) applications in 802.11a is investigated. The defected ground structure (DGS) technique is successfully used to reduce the ground plane by cutting a large slot to achieve significant miniaturization. The ground plane structure consists of inverted ‘L’ shape. The rectangular radiating element...
A wideband rectangular patch antenna is presented and experimentally investigated in this paper to covering X- and Ku-Bands. The results are given in terms of the reflection coefficient, and the radiation pattern, and the realized gain. The simulated and experimental results are in agreement. The measured result shows that the wideband antenna works around two resonant frequencies of 11.073 GHz and...
In the present paper, a simple and compact a coplanar waveguide (CPW)-Fed hexagonal antenna has been presented. The proposed antenna is composed of a new fractal shaped slot with a hexagonal patch fed. The total size of the presented antenna is 14.5×16.5 mm2, which is designed on Rogers RO4350B substrate and having dielectric constant εr=3.66, a thickness of h=1.524 and loss tangent of 0.004. The...
In this paper, we proposed an annular dielectric resonator antenna loaded with printed monopole antenna for a tri-bands application. The results are given in terms of the reflection coefficient, the radiation pattern and the realized gain. Before loading the dielectric resonator, the broadband monopole antenna works around a resonant frequency of 2.704 GHz and can cover a spectrum of 2.1 GHz. However,...
In this work, a compact rectangular monopole antenna is constructed. The results are given in terms of the reflection coefficient and the radiation pattern. The experimental result shows that the narrow band antenna works around resonant frequency of 5.065 GHz and can cover the spectrum of 272 MHz between 4.926 GHz and 5.198 GHz. The size of the proposed antenna with a slotted-feed line and a Defected...
This paper comprise a novel multiple input multiple output (MIMO) antenna with very compact size of 16×10 mm2. The proposed MIMO antenna contains two opposite facing half cylindrical dielectric resonator antenna (HCDRA) elements excited from two Sub-Miniature version A (SMA) connectors with a characteristic impedance of 50 ohm. The position of coaxial probe is optimized for the first time to enhance...
In this paper, we propose a new dielectric resonator antenna (DRA) loaded with rectangular ceramic of the BST (Ba0.8Sr0.2TiO3) material. The high permittivity of the material allows the shifting of the antenna resonant frequency from 10.77 GHz to 8 GHz (suitable for radar applications), achieving a size reduction of the resonator antenna about 67% compared to an ordinary DRA for the same resonant...
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...
In this paper, a reconfigurable triple notched-band UWB (Ultra Wide Band) antenna is presented. This compact antenna covers the frequency range from 3.1 GHz to 11.21 GHz. In order to reject a three frequency bands including the WiMAX (3.2–3.6 GHz), WLAN (5.15–5.85 GHz) and X band (7.25–8.395 GHz), we have inserted three different slots in the radiating patch; two C-shaped slots and a rectangular slot...
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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