HFSS Varactor Diode

- June 6, 2023 at 7:02 pm
  
  Benjamin Bradshaw
  Subscriber
  
  I have a question related to implementing Varactor Diodes in HFSS.
  
  Currently I am trying to model a metasurface in HFSS which implements a Varactor Diode to change Impedance characteristics of the surface. I've been trying different ways to implement a specific SMV2019-079LF varactor based on its equivalent circuit or other characteristics, but the specifications for its implemented diode do not align with the specification required for defining a diode in the circuit software.
  
  What is the best way to go about implementing a varactor in Ansys HFSS?
- June 7, 2023 at 1:49 pm
  
  Dan Dv
  Ansys Employee
  
  Typtically we would recommend that you get a SPICE file for the vacator from the model vendor and then combine that and the HFSS model in a Circuit schematic. Have you tried conecting the model vendor to get a SPICE model for it?
- June 9, 2023 at 7:41 pm
  
  Benjamin Bradshaw
  Subscriber
  
  I have, and I was able to put the model into the Circuit Shematic and simulate it on there. However, for the Metasurface I am using Floquet analysis. Will Ansys Circuit be able to simulate with the floquet analysis?
- June 14, 2023 at 3:06 pm
  
  Dan Dv
  Ansys Employee
  
  Yes, that should work. There was a similar discussion on this forum recently. Please see the response from Irina G in this thread:
  https://forum.ansys.com/forums/topic/optimizing-the-dimensions-of-an-array-element-for-two-states-of-a-pin-diode/

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