S-band dual-circular-polarization high-integration broadband phased array subarray antenna

The invention relates to an S-band dual-circular-polarization high-integration broadband phased array subarray antenna, and belongs to the technical field of communication. The antenna comprises an independent radiation layer and a multi-layer microstrip patch antenna; the PCB 4 of the independent radiation layer is a Tacic single-sided core board; the multi-layer microstrip patch antenna is formed by mixing and pressing a single-face core board PCB 1, a single-face core board PCB 2 and a double-face core board PCB 3 through prepregs, so as to form a feed network strip line model. Taconic single-face core boards are adopted as the single-face core board PCB 1 and single-face core board PCB 2 of the multi-layer microstrip patch antenna, and a Taconic double-face core board is adopted as the double-face core board PCB 3; the independent radiation layer and the multi-layer microstrip patch antenna are fastened through a metal stud. The antenna has the advantages of being high in isolation degree, wide in working