Abstract
A broadband microstrip patch antenna, loaded E-U-shaped open slot on backward of radiating layer is proposed and experimentally investigated. The antenna employs a foam-filled dielectric substrate, whose dielectric constant is within the lower end of the range. The proposed antenna has been designed for electromagnetic analysis including the impedance bandwidth, reflection coefficient, radiation pattern, and antenna gain. The open slot is loaded on the back radiated layer, which is perpendicular to the radiating edge of the oblong microstrip patch component, where the symmetric line feed is selected. This new technique used to increase the bandwidth and the gain of antenna through increasing current path by slot location, width and length on backward of radiating Layer. The main structure in this research was a single microstrip patch antenna planar with three layers operating at two resonant frequencies 4.440 GHz and 5.833 GHz. All the simulated results are confirmed by two packages of electromagnetism simulation. An impedance bandwidth (S11 ≤ −10 dB) up to about 41.03% and 30.61% is achieved by individually optimizing its parameters. The antenna exhibits nearly stable radiation pattern with a maximum gains of 8.789 dBi and 9.966 dBi, which is suitable for Wi-Fi Band, satellite communications, and wireless presented. Whereas the results before this design that we have a proof of publication are 36.17% and 28.43%.
Highlights
The main structure in this research was a single microstrip patch antenna planar with three layers operating at two resonant frequencies 4.440 GHz and 5.833 GHz
6.438 GHz, and (RL-4)-15.57 dB at 6.662 GHz was obtained by Advance Design System (ADS)
Simulation Results of Patch with Foam Gap and Driven Layer In order to fully understand the influence of the space between the top of printed figure and the edge of feed the patch (D-L) parameter, the parametric investigation was carried out by varying this parameter, while holding still existing parameters values as Section 2
Summary
The impedance bandwidth of the microstrip patch antenna, increases with a decrease in the relative permittivity dielectric constant (Єr) [5] [6] [7] or with an increase in the layer thickness (h) [7] [8] [9] [10]. The bandwidth larger than 25% is accomplished utilizing gap-coupled coplanar microstrip resonators [10] Another conventional broad-banding technique includes the use and inserting relatively thick air-gap [11] or foam-gap substrate [12], and in addition, organizing a two or more patches antenna on different layers of the dielectric substrates in one pile (stacked) [13] to achieve wide bandwidth
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