My S21 and Eigenmode simulations disagree HFSS
Hi all, I'm having a problem in ansys where I have a quarter wavelength resonator (with a target frequency of 7.0 GHz, inductively coupled to a transmission line.)
When I do eigenmode analysis, I get 6.99 GHz for the resonator mode, which is what I expect.
However, when I do a driven modal scattering simulation, I get an S21 (dB) dip at 12.63 GHz and nothing at 7.0 GHz
I've even tried to narrow the simulation window to the interval f=(4 GHz, 9 GHz), and still don't see anything happening at 7.0 GHz. What could be going wrong here?
Any insight/help is greatly appreciated. Thanks.
Answers
-
Hello
This forum is for script related questions (e.g., act, mech. scripting, etc.).
For general questions (e.g., why S21 scattering coef. is not as expected and as 1/4 resonance), related to the use of HFSS, post them in the Ansys learning forum (electronics):
https://innovationspace.ansys.com/forum/forums/forum/discuss-simulation/electronics-2/
All the best
Erik
0
