Design and optimization of microwave lumped elements filters using mixed circuital-electromagnetic simulations

This paper presents the design, fabrication and experimental results of the switchable band-pass lumped elements filters. The design is based on a new optimization approach that integrates mixed circuital and electromagnetic simulations. The use of horizontal internal ports and the connection of external capacitors at circuital level make the optimization procedure very efficient. A very good agreement between measurements and simulations validate the new design approach.