Wideband multiport base station antenna radiation boundary

The invention provides a wideband multiport base station antenna radiation boundary. The wideband multiport base station antenna radiation boundary comprises a reflection back board body of a radiation boundary, side edges and column baffle boards, wherein the reflection back board body is provided with four rows of antenna radiators, the four rows of antenna radiators are separated by the column baffle boards, the side edges are arranged at two sides of the reflection back board body, and all the parts form a whole body which is taken as a radiation boundary of an antenna. The wideband multiport base station antenna radiation boundary has properties of simple structure and low cost, has obvious improvement effects on wave beam distortion caused by unit column signal coupling, can further realize horizontal plane wave beam convergence and improves gain so as to improve antenna radiation performance.