A Coupling Matrix Reduction Method Based on Optimization Algorithm and Matrix Transformation

In this paper, a new topology optimization method of coupling matrix is designed by combining the similarity transformation of matrix and the particle swarm optimization algorithm. The rotation Angle is optimized by using the compressed particle swarm optimization algorithm to avoid the complicated calculation process. Compared with the matrix synthesis by matrix similarity transformation and optimization algorithm, the proposed optimization method has the advantages of simple calculation and less iteration times. Finally, a 4-order substrate integrated waveguide filter is designed to verify the coupling matrix obtained.