Welcome to CoupleFil Hompage

For narrow single or multiple bandpass filters it is advantageous using cross-coupled filter designs. Since cross-couplings cause total reflexion for desired frequencies, a cross-coupled cavity filter needs fewer resonators than a simple-coupled one, what will result in a better through loss.

CoupleFil reduces the time and effort to reach optimal solution for cross-coupled filters.

If you are interested in CoupleFil, you can download a trial version to test the software.