Regarding the interdigital capacitor

Hi all,

I want to know whether there are any closed form formulas for calculating the capacitance obtained due to an interdigital capacitor. Thanks.

-svarun

Hi varun,


This reference book may help you on closed form formulas
References
[1] Mongia, R., Bahl, I. and Bhartia P., RF and Microwave Coupled-Line Circuits, Artech House Inc., Norwood, MA, 1999, pp.370-372

try this paper

Interdigital Capacitors and Their Application to Lumped-Element Microwave Integrated Circuits
Alley, G.D.;
Microwave Theory and Techniques, IEEE Transactions on
Volume 18, Issue 12, Dec 1970 Page(s):1028 - 1033

Interdigital Capacitors for Use in Lumped-Element Microwave Integrated Circuits
Alley, G.D.;
Microwave Symposium Digest, G-MTT International
Volume 70, Issue 1, May 1970 Page(s):7 - 13