I want to set a waguide port to my pad connection. figure show below.
Structure: signal pad connects to microstrip line, ground pad connects to grouns. Both connect by via.
After finished simulation, there is message:"Multipin port 1 is strongly inhomogeneous, i.e. the corresponding modes represent combinations of field patterns with different propagation properties. This may lead to an inaccurate energy balance."
How to fixed this problem?
thank you for your help