A Compact Dual-Polarized Patch Antenna Loaded With Metamaterial Unit Cell for Broadband Wireless Communication

A compact dual-polarized patch antenna loaded with metamaterial unit cell is presented in this paper for broadband wireless communication systems. The unit cell is composed of two crossed open loop resonators, which are printed on the crossed substrates. Thanks to the loading of the unit cell, a compact patch antenna is realized with two reflection zeroes. The antenna is driven by the differential ports to obtain high isolation and low cross-polarization. The proposed antenna was fabricated and measured for verification. Measured results show that the proposed antenna has the impedance bandwidth of 17 % for S11 < −10 dB with the cross polarization lower than -33 dB. Both the simulated and measured results prove that the proposed antenna can be a good candidate for the wireless communication.