A Dual-Band Dual-Polarized Planar Antenna with High Gain for Millimeter-Wave Application

This paper presents a dual-band, dual-polarized, high-gain patch antenna optimized for millimeter-wave applications. To achieve dual-band dual-polarized performance, the element is designed as stacked patches with dual-probe feeding. By integrating parasitic strips, the antenna gain is improved. In addition, a bandstop structure is loaded into the element to enhance the cross-polarization isolation. Simulation results of the 2×2 array constructed by the proposed elements show good impedance matching in 15.92-22.58 GHz and 29.47-34.95 GHz bands. The gain of the 2×2 array is 11.4 dBi at 20 GHz and 13.2 dBi at 30 GHz.