I have been reading Hong's "Microstrip Filters for RF/microwave applications" recently. In his book, he mentioned many times to do the measurement by inserting an electric/magnetic wall at the symmetrical plane. But I do not know how to do it in the simulator(I use ADS, layout editor, not schematic editor). The reason I want to insert the electrical/magnetic wall is that I want my filter to excite only even/odd mode frequency.
Could someone please help me to solve the problem? Thanks in advance!