Abstract
In this study, in the first stage, an antenna with circular polarization was designed with the technique of cutting the corners of radiation patches. Then a hybrid structure with DGS and EBG methods was presented. For this purpose, the designed structure of the combination of DGS and EBG, which was designed to reduce mutual coupling, was placed between the radiating elements of the antenna. This method is implemented on a microstrip antenna. The reduction of the coupling of this structure is based on the creation of a magnetic band gap. All simulation was performed numerically by CST Microwave Studio software. The simulation results showed that this structure, unlike previous structures, improves all the characteristics of the antenna, such as the antenna gain, antenna radiation efficiency, and antenna envelope correlation coefficient. Also, the resonant frequency of the antenna is 6.35 GHz, which reduces the coupling by 36.5 dB by placing the designed structure between the radiating elements of the antenna.
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