Double-frequency eight-unit multiple-input-multiple-output (MIMO) antenna for 5G mobile phone

The utility model discloses a double-frequency eight-unit multiple-input multiple-output (MIMO) antenna for a 5G mobile phone, which comprises a cuboid dielectric substrate and is characterized in that a metal floor is arranged at the bottom of the cuboid dielectric substrate, and M T-like grooves and K convex grooves are symmetrically formed in the surface of the floor; n 'U'-shaped antenna units are uniformly arranged at the top of the dielectric substrate, and each antenna unit is composed of three microstrip lines; the microstrip line is made of a metal material and is loaded on the top of the dielectric substrate, and the microstrip line structure is provided with a feeding point; the antenna units on the two sides of the top of the dielectric substrate are distributed in a mirror symmetry mode, and the distance between the antenna units on each side is the same. The antenna can cover the frequency bands of 3.3 GHz-3. 6GHz and 4.8 GHz-5. 0GHz, the isolation degree between the ports is superior to 13.6 dB