Needbias said:
Anyone there has experience in simulate a broadside microstrip line,the two output port are on the same plane,so if you choose mutiple pin port set ,the result sames not correct,for me,the S21 is positive.who can help me?
I understand.
I had such problem's with CST and solve them only after much addition mesh cells.
I think that in CST is not very good automeshing. Many problem your need to solve by hands and head
.
In HFSS the mesh's refinement is the better.