Low-profile miniaturized decoupling structure based on patch MIMO antenna

The invention discloses a low-profile miniaturized decoupling structure based on a patch MIMO antenna, and the decoupling structure comprises a metal grounding plate and a rectangular dielectric substrate which are sequentially arranged from bottom to top, and the upper surface of the rectangular dielectric substrate is provided with a first patch antenna, a second patch antenna and a microstrip resonator. The distances from the coupling edges of the antennas and the microstrip resonator to the microstrip resonator are equal, and the coupling strengths are equal; the first patch antenna and the second patch antenna are respectively provided with a first input port and a second input port, one side of the central position of the microstrip resonator is provided with a square branch knot, and the center of the square branch knot is provided with a metalized via hole; and the coupling from the first patch antenna to the second patch antenna and the coupling from the first patch antenna to the second patch antenn