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capacitance as function of frequency

Posted 4 août 2015, 11:12 UTC−4 Low-Frequency Electromagnetics Version 5.0 2 Replies

Jiantao Kong

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Hi all,

I know how to simulate the capacitance of a static capacitor. Now I want to change the static voltage to a AC source and I want to see the capacitance as function of frequency. How can I do this? Is there any example? Thanks!!!!!!

2 Replies Last Post 4 août 2015, 13:51 UTC−4

Edgar J. Kaiser Certified Consultant

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Posted: 9 years ago

Jintao,

you can of course do a frequency domain study instead of the static study. However, capacitance does not depend on frequency unless any material properties (dielectric) are frequency dependent.

Cheers
Edgar

--
Edgar J. Kaiser
emPhys Physical Technology
www.emphys.com

Jiantao Kong

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Posted: 9 years ago

Thanks. The example here is very helpful and if relative permittivity and conductivity of the material is independent on freq the capacitance won't change.

www.comsol.com/model/frequency-domain-modeling-of-a-capacitor-12693

Now my question is what's the relative permittivity and conductivity of PBS as a function of frequency? I need them in my simulation

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capacitance as function of frequency

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