Coupling determined for the microstrip resonators

Hi, all

Recently i met some trouble with external coupling or coupling between microstrip resonators when i simulated it with software HFSS or IE3D.

I know the method of determining coupling between cavity resonators, which can be easily simulated with HFSS for eigenmode solution.

But for microstrip resonators, i know nothing...

Added after 2 hours 15 minutes:

Please help me...
every one