[SI-LIST] Re: high-order coupling between inductors in hspice
- From: Ray Anderson <reanderson@xxxxxxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Mon, 25 Oct 2004 08:08:35 -0700
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>
>Warning: The automatic inductance calculation is only an estimation and is
>accurate for a subset of geometries. The second-order coupling
>coefficient is simply the product of the two first-order coefficients,
>which is not correct for many geometries.
>
>
As it says: "which is not correct for many geometries"
I think Andy's example of L1 and L2 close and L3 far falls into that
category. It sounds to me that the auto-calc feature described in the
manual is dangerous at best.
-Ray Anderson
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