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A Miniaturized Multi-Beam Antenna System Based on Strongly Coupled Antenna

In this article, a miniaturized design of multi beam antenna system based on strongly coupled antenna is proposed. By opening the connection part of the cross junction of the multi-beam feed network, all couplers are closed-loop connected in turn. The space in the open cross junction ring is used to set the antenna array, and the purpose of miniaturization is achieved. Subsequently, the problem of coupling between antennas is faced. In this paper, the decoupling structure using the concept of phase shift of antenna array is used. According to this structure, the simulation of four antennas is carried out and on this basis. In the last part, the multi beam antenna system is simulated and analyzed after adding Butler matrix. The system has good performance and good miniaturization effect.