I have tried to simulate the circuit with frequency dependent component on QUCS. By passing the "acfrequency" parameter to a variable that represented the component value, the result of variable after AC simulation is ok. However, the analysis result of the circuit was incorrect.

For example, with the simple AC voltage source connected with a frequency dependent resistor. I set the value of the resistor to Rv, while Rv = acfrequency in the equation. The Rv plot vs frequency was as expectation. However, the resulted current thru the resistor didn't vary. Seemingly, the resistor became short circuit point instead.

Is there any way I can simulate the frequency dependent component with AC simulation on QUCS or this is not supported?

I'm looking forward for your help. I've tried to post in the forum but it always shows an error.

Best Regard,
Teerada Huang