A Dual-Polarized Patch Antenna with High Isolation

This paper introduces a dual-polarized patch antenna with high isolation. The proposed antenna can have a high degree of isolation with the return loss substantially unchanged by introducing a microstrip transmission line network. The |S11| of antenna is less than -10 dB from 3.28 GHz to 3.76 GHz, and its |S21| is less than -25 dB from 3.01 GHz to 3.70 GHz. Finally, it is found that the cross polarization of the proposed antenna is also better than that of the initial antenna by comparing the radiation [patterns of the two antennas.