Abstract: A metasurface-based dual-band polarized two-beam base station antenna includes a radiation metasurface antenna layer, a metal floor etched with a plurality of crossed slots, and a four-port feed network layer; the radiation metasurface antenna layer is positioned on an uppermost layer, the four-port feed network layer is positioned on a lowermost layer, the metal floor is arranged between the radiation metasurface antenna layer and the four-port feed network layer, and the plurality of crossed slots are etched on the metal floor to achieve a dual-band polarized radiation characteristic; and the plurality of crossed slots are sequentially excited, and energy of the four-port feed network layer is coupled to the radiation metasurface antenna layer via the crossed slots, so as to realize dual-band polarized beams.

Abstract: A coupling-offset path branch and a high-isolation millimeter-wave phased array antenna based on the same. The high-isolation millimeter-wave phased array antenna includes a plurality of radiating stacked microstrip patch elements, a shielding metal wall, several coupling-offset path branches, a metal ground plane, a feeding network layer, several ports, wherein the first port is excited, energy of the feeding network layer is coupled to a corresponding radiating stacked microstrip patch element through an I-shaped slot, and the energy is transmitted to the second port adjacent to the first port through an inherent coupling path portion; the coupling-offset path branch is introduced to offset the inherent coupling, thus achieving a high-isolation performance between the first port and the second port. By adopting the simple decoupling branch, the invention can achieve a high-isolation effect in a wide band, improve an active standing-wave ratio and a scanning capability of the array antenna.

Abstract: A coupling-offset path branch and a high-isolation millimeter-wave phased array antenna based on the same. The high-isolation millimeter-wave phased array antenna includes a plurality of radiating stacked microstrip patch elements, a shielding metal wall, several coupling-offset path branches, a metal ground plane, a feeding network layer, several ports, wherein the first port is excited, energy of the feeding network layer is coupled to a corresponding radiating stacked microstrip patch element through an I-shaped slot, and the energy is transmitted to the second port adjacent to the first port through an inherent coupling path portion; the coupling-offset path branch is introduced to offset the inherent coupling, thus achieving a high-isolation performance between the first port and the second port. By adopting the simple decoupling branch, the invention can achieve a high-isolation effect in a wide band, improve an active standing-wave ratio and a scanning capability of the array antenna.