Synthesis of filter circuits utilizing transfer-function characterization has traditionally been a strong design tool for engineers needing to create lumped, active, and digital filters. Over the last decade, the use of transfer-function-based filter synthesis has also been extended to distributed-element circuits, Software programs such as FilterSolutions^® from Nuhertz Technologies.

The use of accurate circuit-element models with straightforward filter design software can help trim the time and effort needed for what can normally be a grueling and iterative design process.