Patent ID: 9590297
Date: 2017-03-07
CPC Classifications: H01Q

Claim:
1. A multi-input multi-output antenna system comprising a first radiation unit, a second radiation unit, a radiation floor, a dielectric plate and a parasitic element, the first radiation unit, the second radiation unit and the parasitic element being printed on an upper surface of the dielectric plate, and the radiation floor being printed on a lower surface of the dielectric plate; the first radiation unit and the second radiation unit being planar monopole antennas, and the parasitic element being positioned between the first radiation unit and the second radiation unit; wherein both the first radiation unit and the second radiation unit are distributed in diagonal positions of the upper surface of the dielectric plate and are composed of zigzag microstrip lines, and the parasitic element is a rectangle and is composed of microstrip lines printed on the upper surface of the dielectric plate; wherein the parasitic element is a reflection unit for decreasing coupling between the first radiation unit and the second radiation unit, and the parasitic element is not connected to the first radiation unit and the second radiation unit; wherein the radiation floor is a rectangle with one corner cut and is made of a copper foil printed in the middle of the lower surface of the dielectric plate; the antenna system further comprising a matching network comprising a first matching circuit and/or a second matching circuit, the first matching circuit being connected to the first radiation unit, and the second matching circuit being connected to the second radiation unit, both the first matching circuit and the second matching circuit being composed of one or more lumped elements; wherein the first matching circuit comprises an inductor L the second matching circuit comprises a capacitor C, an inductor L