Hi everyone,

I'm working on tuning the coupling element of an RF cavity in CST Microwave Studio, and I'd like to monitor the E and H fields at the cavity's resonance frequency using the Frequency Domain Solver (F-Solver).

Here's my current workflow:

1. Run the F-solver with mesh adaptation enabled.
2. Identify the resonance frequency by locating the minimum of S11.
3. Manually add field monitors at this exact resonance frequency.
4. Re-run the simulation without mesh adaptation (to preserve the mesh and avoid shifting the resonance).

This approach works, but it's not ideal:

• It requires manual intervention between runs.
• It duplicates the simulation time.

My questions:

• Is there a way to do this in one shot within CST?
• Can this process be automated using  Python scripting (ideally) (e.g., extract resonance frequency from S11 and automatically set a field monitor)? and if yes, can someone explain how to do? If not is there another way (VBA or othe CST's scripting interface) ?
• Any best practices or tips for accurate field monitoring at resonance with the Frequency solver while maintaining mesh consistency?
  
   

Thanks in advance for any advice or shared scripts!

Denis :-)