Broadband low cross polarization millimeter wave antenna array for printing ridge slot waveguide feed

The invention relates to the technical field of millimeter wave antennas, and provides a broadband low cross polarization millimeter wave antenna array of printing ridge slot waveguide feed, which comprises an antenna structure layer and a printing ridge slot waveguide feed layer, and is characterized in that the antenna structure layer comprises a dielectric substrate A, an upper floor, two parasitic units and four antenna units; the two parasitic units are symmetrically arranged on the dielectric substrate A; the four antenna units are symmetrically arranged on the two sides of the two parasitic units in pairs, and the two antenna units located on the same side are symmetrically arranged; the printing ridge slot waveguide feed layer comprises a dielectric substrate B. The dielectric substrate B is provided with a first rectangular slot and a second rectangular slot. The miniaturized design of the antenna is realized by using the antenna units subjected to the miniaturized design, the cross polarization leve