X5R capacitors derate to about roughly 85% when DC voltage is applied, from what I have been told.
Does this have an effect on high pass filters, even though HF filters off DC (0Hz)? If I wanted to test voltage derating on capacitors and its effect on an AC signal, how would I do so?
I tried with different frequency and tried adding a Voltage offset, and these were the results i got. When I simulated it didn't show any change. When i tried to run a test on a small HF circuit with a 100nF X5R capacitor and a 1k, the amplitude of my output reduced. At higher frequencies the changes in amplitude were wayy smaller compared the frequencies at and under the cutoff frequency((1446Hz).