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One of the important properties of Archimedean spiral antenna (ASA) is its unidirectional radiation pattern properties. This property is mainly achieved by using ground plane placed behind the spiral antenna. This paper presents the effects of air cavity ground plane on the design of two arms ASA. The GP is placed at λ/4 for the selected design frequencies. The GP deteriorates the antenna's performance...
This paper presents a novel of a Reconfigurable Stacked Patch Microstrip Array Antenna (RSPMAA) integrated with radio frequency (RF) switches at the feedline. The antenna uses a combination of aperture coupled technique and stacked patch technology for reducing spurious radiation patterns. Generally, this RSPMAA consist of three substrate layers (RT-Rogers 5880) and an air filled substrate between...
This paper presents a novel of a Frequency Reconfigurable Stacked Patch Microstrip Antenna (FRSPMA) integrated with radio frequency (RF) switch. It consists of three substrate layers where all layers uses RT-Rogers 5880 with a thickness of h1=0.787 mm. A 0.3mm (h2) thick air gap is filled between the stacked radiating patch (layer 1 and layer 2) and the feedline substrate to enhance the gain performances,...
This paper presents the frequency reconfigurable antenna that can be applied either in LTE (2.6 GHz) or WiMAX (3.5 GHz) applications. This antenna is designed with a combination of an aperture coupled as the feeding technique and stacked patch technology or known as a Frequency Reconfigurable Stacked Patch Microstrip Antenna (FRSPMA). It consists of three substrates layers where all the layers are...
In this paper, the Frequency Reconfigurable Stacked Patches Microstrip Antenna (FRSPMA) fed by aperture coupler technique is presented. The antenna is designed using C-Foam as a dielectric substrate for different stacked patches and FR-4 material for feedline substrate. One RF switch is integrated at the feedline to control the activation patches and aperture slots during ON and OFF states. During...
This paper presents a novel design of a Frequency Reconfigurable Stacked Patch Microstrip Antenna (FRSPMA) by using an aperture coupler as the feeding technique and stacked technology. The proposed antenna was capable to accommodate at S/X band separately by using the same antenna. Two patches at different substrate are activated sequentially by changing the switch mode at the feedline to achieve...
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