Problems with 2.5D simulators

[cgeo]

Hello

I was recentrly using 2.5D simulator myself, Momentum, and i was wondering what are its limitations?? I mean i know that it is quite efficient when it comes to planar structures, (eg microstrip antennas) but although it supports vias i think it has problems simulating connectors (eg coaxial connectors). Why is that?

I was trying to simulate a coaxial connector in a microstrip antenna using via, but when i was plotting surface currents the results were far from right.

Can anybody comment on the above? Any help will be greatly appreciated

 

[xcyyx]

Hello Cgeo
If you just want to design planar structure, IE3D will be a good choice . 2.5D simulator is limited by it's arithmetic, it is based on 2D MOM , and use 2D GREEN function .