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A reconfigurable proximity coupled antenna with frequency and polarization switching capabilities

A compact reconfigurable proximity coupled antenna with frequency and polarization switching capabilities is presented in this paper. The frequency and polarization switching capabilities are realized by using six PIN diodes across an star-shaped slot on the ground plane. The proposed antenna has six different operation status including linear polarization (LP), right-hand circular polarization (RHCP) and left-hand circular polarization (LHCP) wave. Due to the frequency and polarization switching capabilities, the overall capacity of the antenna in the wireless transmissions could be potentially enlarged.