Jeffrey,

I have an excel spreadsheet that our materials engineer uses to
calculate that information.  I can't send it through the forum so let me
know if you'd like it sent to you directly.

Bob Harter, Jr.
PCB Designer
Paratek Microwave, Inc.
6935 G Oakland Mills Rd.
Columbia, MD 21045
PH# (443)259-0140 x278
CP# (443)739-8407
WWW.PARATEK.COM 

-----Original Message-----
From: DesignerCouncil [mailto:[log in to unmask]] On Behalf Of
McGlaughlin, Jeffrey A
Sent: Thursday, March 10, 2005 9:14
To: [log in to unmask]
Subject: [DC] Interdigitated Coplanar Capacitor Design

Does anyone have a recommendation on a design guide for calculating the
capacitance of a coplanar interdigitated capacitor? We have a couple of
RF packages the do structures but they are impedance at frequency based
and we need true DC capacitance for this application.

Thanks In Advance,

Jeffrey A McGlaughlin, CID
Engineering Designer
Battelle Memorial Institute
Columbus Ohio
http://www.battelle.org
[log in to unmask]

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