Research on Broadband Multi-beamforming Network Based on Microstrip Circuit

The paper proposes a method for implementing broadband multi-beamforming network based on microstrip circuit, which is mainly aimed at line source array system[1], especially low frequency system. This is a research method that is different from Rotman lens and Butler matrix method. It mainly adopts the mixed plane integration method of transceiver front end, multi-channel beampower division, delay network and multichannel synthesis circuit. This paper implements a 2-6GHz multi-beamforming network, simulates the microstrip power division and synthesis network, and uses multi-beamforming theory to calculate the physical length matching of adjacent signals, complete the delay network design. The overall network and each circuit have good transmission performance and guarantee miniaturization and high reliability requirements.