FilterSolutions® the filter circuit synthesis software from Nuhertz Technologies has added the capability of exceptionally rapid and accurate electromagnetic (EM) optimization utilizing Axiem® tuning port capability, the electromagnetic analysis tool from NI/AWR® (division of National Instruments Corp.).
By automated insertion of strategically placed tuning ports into FilterSolutions planar geometry and exporting to the Axiem software, planar filters can be EM optimized across a frequency range with only a few mouse clicks and usually in less than five minutes.
The techniques are explained in detail in the Nuhertz publication AN/AWR103, available from the Nuhertz website: http://www.nuhertz.com/support/application-notes