Antenna with wide-beam circularly polarized radiation performance

The invention provides an antenna with wide-beam circular polarization radiation performance. A top conductive patch of the antenna is composed of four antenna units arranged in a rotating mode and a one-to-four feed network. The four antenna units which are arranged in a rotating manner form a circularly polarized antenna array; each antenna unit is composed of two parallel short branches and a long branch perpendicular to the short branches, and one ends of the two parallel short branches are connected with the upper portion of the long branch. And each antenna unit is connected with the bottom conductive patch through the grounding through hole. According to the PCB patch antenna provided by the invention, the top patch consists of the four rotationally arranged antenna units and the one-to-four feed network, the arrangement is compact, the miniaturization of the antenna can be realized, and meanwhile, the four antenna units can realize circular polarization radiation. The design of the branches in the ant