Abstract: The interconnect structure between microwave components has become an important feature that greatly influences the performance of microwave electronic systems as microwave circuits have evolved in the direction of high integration, high frequency, and high reliability. Aiming at the problems of unclear characterization of the microwave module interconnection structure, unclear correlation mechanism between structural parameters and transmission performance, and difficulty in determining the optimal structure shape, a method for determining the optimal shape parameter of the flexible wire-wound interconnection for the electrical performance of microwave components was proposed. The interconnection configuration of flexible winding was characterized and modeled parametrically, the key parameters of flexible winding interconnection form was determined based on the degree of influence, and the local optimal configuration parameters of flexible winding interconnection were calculated by the experimental design. Finally, the local optimal configuration parameters were set as the initial values, and the global optimal configuration parameters of interconnection for electrical performance transmission were determined based on particle swarm algorithm. The calculation example results show that, compared with the return loss and insertion loss under the initial shape parameters, the return loss and insertion loss under the global optimal configuration parameters were increased by 558.6% and 97.8%, respectively, which verifies the accuracy of the method. The results have a certain significance and reference on the optimal design and performance improvement of flexible winding interconnection in microwave components.

Key words: microwave components, flexible winding interconnect, optimal configuration parameters, optimal design