A Synthesis Method for All-Resonator Diplexer with Contiguous Channels Based on Gaussian Cauchy Differential Evolution - LM Optimization Algorithm

This paper proposes a synthesis method for the diplexers with contiguous channels based on a hybrid algorithm. For the diplexer with contiguous channels, additional coupling between the two channels is added into the all-resonator diplexer, thus achieving significant isolation. Furthermore, all-resonator diplexer topology cannot be synthesized with the conventional analytical method, a synthesis framework that integrates Gaussian Cauchy differential evolution (GCDE) method and Levenberg Marquardt algorithm is presented. Here, GCDE is used to implement the global search to avoid local minimums, while LM can accelerate the convergence. Compared with the traditional synthesis algorithms, the proposed synthesis approach is more general.