Ansys Assistant will be unavailable on the Learning Forum starting January 30. An upgraded version is coming soon. We apologize for any inconvenience and appreciate your patience. Stay tuned for updates.

Innovation Space

FREE STUDENT SOFTWARE

Question about HFSS solution frequency

- June 20, 2026 at 11:09 pm
  
  anz13556
  Subscriber
  
  Hi,
  
  I am simulating an antenna in HFSS and looking at the impedance plots. When I set my solution frequency to 60MHz and above, I get the following plot:
  However, when I set the solution frequency to 50MHz, I get the following:
  Where did the spike at 50MHz go? What is causing it?
  PS: I am also using a radiation auto-open region.
- June 21, 2026 at 11:45 pm
  
  Takeshi Itadani
  Ansys Employee
  
  For HFSS, set the Solution Frequency to the highest frequency within the frequency range you want to investigate.
  Otherwise, the accuracy at frequencies higher than the Solution Frequency will be reduced.
  Also, if the frequency bandwidth is wide, select Broadband instead of Single, and set Low Frequency to the lowest frequency of the frequency sweep and High Frequency to the highest frequency of the frequency sweep.

Viewing 1 reply thread

You must be logged in to reply to this topic.

[bingo_chatbox]