Computationally Efficient Multi-Fidelity Multi-Grid Design Optimization of Microwave Structures

摘要

A simple and reliable algorithm for design optimization of microwave structures is introduced. The presented methodology exploits coarse-discretization models of the structure of interest, starting from a very coarse mesh, and gradually increases the discretization density. Each model is optimized using a simple grid-search routine. The optimal design of the current model is used as an initial design for the finer-discretization one. The proposed methodology is computationally efficient as most of the operations are performed on coarse-discretization models. Three examples of microstrip filter designs are given.