RE: [SI-LIST] : A basic question

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From: [email protected]
Date: Fri Mar 17 2000 - 08:15:07 PST


 There may be a missing tacit assumption.

If the conductor is buried between two ground planes in a homogenous dielectric,
then prop delay is independent of geometry and set only by the permitivity.

But if it is a surface conductor, then changing the geometry changes the
relative
mix of air and circuit board. Under this condition, prop delay can change.

>So, if what Ken says below is true, then Pd does not equal (LC)^(1/2)!!!

Um, why not?

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