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In this paper, concave rectangular and hexagonal patch configurations are simulated and optimized to reduce the mutual coupling and return loss in microstrip array antennas. An enhanced genetic algorithm is employed to minimize the design objectives through optimally computing the design parameters. However, the variation of design parameters leads to an undesirable central frequency shift. To avoid...
This paper presents a multilayer aperture coupled microstrip antenna with a non symmetric U-shaped feed line. The antenna structure consists of a rectangular patch which is excited through two slots on the ground plane. A parametric study is presented on the effects of the position and dimensions of the slots. Results show that the antenna has VSWR < 2 from 2.6 GHz to 5.4 GHz (70%) and the gain...
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