Not all disk caps are the same - it depends on the dielectric. NP0 types
are pretty good but the high K formulations, Z5U and Y5U are not so good.
I've written about capacitance versus voltage and harmonic distortion in
various dielectrics at
http://www.cliftonlaboratories.com/capacitor_voltage_change.htm
Will revisit this in the future with some RF data.
Jack K8ZOA
Ignacy wrote:
> disc ceramic capacitors - bad for IMD!
If there is a problem with those capacitors at 30dbm, I am wondering about
the power amps especially SS where ceramic caps are used extensively. Seems
nearly all amp's IMD cam generated in those caps. Am I missing something?
Ignacy
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