Abstract
This paper designs and simulates frequency reconfigurable microstrip patch antenna using Defected Ground Structures (DGS) with aperture coupled feed line. Single element with two regular slots etched on the ground layer has been designed to represent two resonant frequency 7.5 GHz and 8.85 GHz. Comparison two antenna designs without and with DGS structure is reported in this paper. Simulated results shows that etched DGS structure on the ground plane can eliminate one of the resonant frequencies. Effect of DGS structure on the designed antenna based on switching mode at the feed line.
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