How to simulate wire bond excitation?

- August 24, 2023 at 7:49 pm
  
  srocca
  Subscriber
  
  Hello,
  I created a wire bond to 2 pads to the 2 pads on my resonator. There is no GND in the resonator because they are differential excited. I simplified the model to be just the lumped port(red) connecting 2 PEC pads (orange). I am not getting good results. Is this how I should create the ports? Thanks.
  Additional details about real life experiment: The resonator is glued to the PCB. The PCB has a GND
- August 28, 2023 at 2:06 pm
  
  Aymen
  Ansys Employee
  
  Make sure you're including all possible couplings. In your case, I'd expect to see some impact of the ground plane of the PCB so I' add at least a dummy metal sheet below the entire geometry and reference my ports there.
- August 28, 2023 at 8:25 pm
  
  srocca
  Subscriber
  
  Aymen,
  
  You are correct about the GND plane. I added the pcb/GND portion beneath the resonator and contact pads. However the fields are not what I would expect for a differential excitation. Do you think there is something wrong with how I am exciting my model or how I drew the ports?
  
  Thanks.

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