Polarization and directional diagram diversity dielectric resonator antenna with slot excitation

The invention discloses a slot-excited polarization and directional diagram diversity dielectric resonator antenna, which comprises a dielectric substrate, the upper surface of the dielectric substrate is provided with a grounding plane, the lower surface of the dielectric substrate is provided with a feed network, and the side surface of the dielectric substrate is provided with an omnidirectional port and two directional ports; the grounding plane is provided with a dielectric resonator element and a rectangular groove; a feed signal of the omnidirectional port reaches the resonator element through the feed network and the rectangular groove to excite the first working mode of the resonator element; feed signals of the two directional ports reach the resonator element through the feed network and the rectangular groove to excite a second working mode and a third working mode of the resonator element respectively; the omnidirectional port and any directional port form a directional diagram diversity antenna;