Dual-polarization micro-strip filter antenna based on SRR

The invention relates to a dual-polarization filter antenna based on SRR. The dual-polarization filter antenna comprises a first metal layer, a second metal layer, a first dielectric substrate, a second dielectric substrate and a metal ground. The first metal layer is printed on the upper layer of the first dielectric substrate and consists of a patch antenna and four opening resonant rings; the second metal layer is printed between the first dielectric substrate and the second dielectric substrate and consists of a patch antenna and four short-circuit opening resonant rings; each short-circuit split resonance ring consists of a short-circuit pin, a large opening resonance ring and a small opening resonance ring; the second metal layer is connected with the metal ground through the short-circuit pin. Four short-circuit opening resonant rings are arranged in a first metal layer patch, and a radiation zero point is generated in a high-frequency section of a gain diagram; four short-circuit opening resonant ring