The state of the art of microwave CAD: EM‐based optimization and modeling

We briefly review the current state of the art of microwave CAD technologies. We look into the history of design optimization and CAD‐oriented modeling of microwave circuits as well as electromagnetics‐based optimization techniques. We emphasize certain direct approaches that utilize efficient sensitivity evaluations as well as surrogate‐based optimization approaches that greatly enhance electromagnetics‐based optimization performance. On the …