Capacitive sensor - calculation???

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north2012

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Hi,

I would like to calculate capacitance of planar PCB capacitor (Please see attachment). Substrate is FR-4 and I would like to print no interdigital structure because I think that it will be easier to calculate with this simple structure.

View attachment C.pdf

Which equation I can use?

How I can calculate capacitance of interdigital capacitor?



Thanks.
 
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