Re: Coupled Line Filters
Hi,
in a.d.s. you have so-called passive smart components. You can chose preferable topology and order and the program will do the microstrip synthesis of the fileter you want to build. It is very straight forward to use and you don't have to know much about filters, just decide which type of filter you want - parallel coupled lines, shunt stub etc. There is a limited choice but it will do the job. You have this kind of tool as well in Ansoft Designer and Microwave Office. The schematic just comes with basic lines so you have to add discontinuities (steps, tees) yourself. Depending on a frequency it is advisable to run EM simulation (Momentum, EM sight, Ensemble) to fine-tune the performance.
Hope this will be a useful guideline.
flyhigh