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modeling software recommendation

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jlinstrom

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I am building capacitance sensing electrodes to detect insects/small animals. The electrode shapes are mostly driven by animal/environment restraints and I need a way to estimate parasitic/residual capacitance; the ICs I use only allow so much nulling. I have gerber/dxf of the layers and can generate 3D models.
Any suggestions for a way to model both the parasitics and resulting change in capacitance with a cylinder of radius R, mainly water (Er~80).

Thanks-
john
 

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