Faster Filter Design With Nuhertz FilterSolutions Ansys Nuhertz FilterSolutions dramatically speeds up the design of lumped element (surface mount) and planar filters. It also includes synthesis tools for active, switched capacitor and digital filters. The netlist of active filters can be exported in SPICE format. The digital filter synthesis module can export C-code for the generated filter. Together with SynMatrix tool, and other unique 3D electromagnetic simulation technologies in HFSS, such as analytical derivatives and automatic adaptive meshing, these two filter solutions are making RF and microwave filter design a much smoother process that is accessible to more engineers.