CST - Problems about EM-Circuit Co-Sim

Hi,

I have a problem in simulating in CST Microwave Studio. The problem is mainly about the EM-Circuit Co-simulation under the excitation of field source in the schematic.

The problem is as following:

I am trying to simulate a metasurface array equipped with active element under the excitation of the field source in Microwave Studio. However, in this situation, it is unlikely to carry out the circuit co-sim because the field source can not be used as the excitation port in the Schematic View.

So, how can I perform the EM-Circuit Co-Simulation with the excitation of field source?

CST Studio Suite ​​​​​​​