DESIGNERCOUNCIL Archives

February 1999

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Subject:
Embedded Microstrip
From:
"Daniel A. Doherty" <[log in to unmask]>
Reply To:
[log in to unmask]
Date:
Thu, 18 Feb 1999 14:27:27 -0500
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Does anyone happen to know the CORRECT formula for the capacitance of an
embedded micstrip?  The one contained in -D-317A pg. 23 cannot be right
as the natural log of a negative number is not defined...

317A states:  C=(1/(H+t))*ln(1-(.6987*(E+1.41)/sqrtE))


Daniel A. Doherty
North Coast Design
6341 Applewood Ln.
Williamsburg, MI 49690-9725
V 616.267.9717
F 616.267.9718

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