Response Features for Fast EM-Driven Design of Miniaturized Impedance Matching Transformers

A framework for low-cost EM-driven design optimization of compact impedance matching transformers is presented. Our technique is based on a bottom-up design where design requirements for the transformer circuit are translated into specifications for its building blocks. These elementary cells are optimized using response features. Subsequently, the entire circuit is fine-tuned using local response surface approximation models and response correction methods. A three-section 50-to-100 ohm transformer is designed for demonstration purposes.