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A wide band dual-polarized microstrip patch antenna

Dual linear polarization with low cross polarization and high isolation has previously been reported using a cross shaped microstrip patch antenna. Here, by slightly deforming the shape of the patch, the bandwidth of the cross shaped structure is increased from 1.7 percent to 4.2 percent and the changes had minimal effect on radiation properties of the antenna. Segmentation, desegmentation and multiport network theory were used to predict the antenna characteristics such as resonant frequency, input impedance, scattering parameters, and radiation patterns of the antenna. Experimental results are in good agreement with theoretical calculations.