Abstract
Multiport network model (MNM) is considered as one of the best models to analyze and design of microstrip patch antennas (MPAs). This model includes several circuit networks, each representing one characteristic of the MPA. In this paper, a circularly polarized MPA is designed using the MNM. For producing the circular polarization, two probe feeds are used in the antenna E-plane and H-plane, respectively. These probes have currents with equal amplitudes and 90 degree phase difference. In order to increase the accuracy of design, mutual coupling between the patch edges is considered. The validity and accuracy of design, is affirmed with attention to the different curves of the antenna parameters. With analysis of the achieved results, new and deep insight for the MPAs' operation is accrued.
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