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A wideband metamaterial antenna employing SRR loading is presented. Two designs were simulated, fabricated and measured. The bandwidth enhancement is achieved by loading SRR resonator onto a conventional monopole antenna. The SRR excited a lower resonance frequency mode which matches with the resonance frequency of the monopole antenna thereby extending the overall impedance bandwidth from 26% to...
In this paper, the patch antenna with polarization reconfigurability feature is proposed. The antenna composed of circular patch on the top substrate embedded with four equal-length slits, and is fed at the diagonal of the structure using the coaxial fed technique. To obtain the reconfigurability feature, four switches (copper strips) are appropriately located at the specific position across the slit...
The performance of a compact circular polarization (CP) textile antenna is presented. The design is based on the traditional CP rectangular truncated patch antenna. Four slits are introduced at every edge of the rectangular truncated patch antenna to make it compactness. Simulated results show that the proposed antenna can have an antenna reduction of about 18% compared to the traditional one. A good...
In this paper, an antenna with polarization reconfigurability is presented. The antenna consists of a two cross-slots diagonally positioned in the centre of a circular patch antenna. Two pair of switches are placed in the slots and by controlling the length of the slots, three different polarizations can be reconfigured. The proposed antenna is capable to reconfigure between linear polarization (LP),...
A Koch Fractal textile antenna are designed using denim material operating at 0.915 GHz. From the zero through second iteration, all the antennas performance in terms of return loss, bandwidth, realized gain and efficiency have been compared and analyzed. Then, on-body simulations was conducted using Voxel Human Body model in using CST Microwave software. At the same time, maximum Specific Absorption...
This paper describes the design of the hybrid dielectric resonator with patch antenna operating at Ultra-High Frequency band. At this particular band, the size of the antenna is excessively big, thus consuming bigger space. As a kind of hybrid antennas, which consist of two different antennas integrated on a single body, the design achieved more compact design, especially the patch antenna. The design...
This paper presents the investigation on the effect of two main parameters of a circular polarized patch antenna by using notch technique. The results show that this technique can improve the performance of return loss and gain of the patch antenna. The operating frequency of the proposed antenna is 2.4GHz with 32.66MHz of bandwidth and return loss is −49.63dB. The antenna had been designed and simulated...
This technical paper present the design of circular patch with slanted rectangular slot (Design 1 and Design 2) and x-circular polarized with slanted rectangular slot (Design 3) by using single port at frequency 2.4GHz. For design 3, the combination of design 1 or design 2 by using quarter wave matching is introduced. The design simulated using Microwave CST software with dielectric constant dielectric...
In this paper the A-shape dielectric resonator antenna is modified for circular polarization in low frequencies of wireless applications. In order to have a wide bandwidth, a dielectric with low permittivity is employed. Another dielectric resonator owning a high permittivity is stacked to the other one, which is assigned to provide circular polarization. A Pshape parasitic strip is embedded between...
Meander line antenna with parasitic element was investigated. It has been designed to operate at 2.4-GHz which are specified by IEEE 802.11b/g for WLAN. The antenna designed has been done for planar type. Microwave Studio SCT Microwave Office software is used for simulation designed process. The antenna is fabricated on a double-sided FR-4 printed circuit board using an etching technique. Then the...
In this paper a novel design procedure to obtain wideband and small size dielectric antennas using high dielectric constant material is described. It is shown that by selecting the resonator shape and creating a notch on the dielectric resonator, it is possible to design rectangular dielectric resonator antenna which compact size and wide frequency coverage. Simple formulas are presented to illustrate...
The fabrication and simulation of the inset feed log periodic antenna has been investigated with four different numbers of elements: five, seven, nine and eleven. The antennas have been modeled using microstrip lines and S parameter data from single element. The data is extracted from the momentum simulation and combined with the microstrip transmission line. The properties of antennas such as bandwidth,...
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