Space-mapping-based design flow of miniaturized broadband matching transformer with perforated metallization

A fast design procedure of unconventional passive components has been presented and experimentally validated on the basis of a wideband microstrip four-section matching transformer (50:6 Ω). A classic impedance matching circuit has been miniaturized by means of compact microstrip resonant cells (CMRCs) leading to a considerable length reduction (34%) together with minor degradation in its performance. The space-mapping-based design procedure has proved its usefulness resulting in significant design time reduction as well as its partial automation.