Re: [SI-LIST] : Ferrite Beads in HSPICE

Dmitri Kuznetsov (vdm@avanticorp.com)
Thu, 23 Apr 1998 16:23:32 -0700

Julia Nekrylova wrote:
>
> Hi,
>
> Does anybody know the easy way to incorporate ferrite beads
> (frequency-dependent resistors/inductors) into HSPICE
> transient analysis?
>
> Thanks
>
> Julia Nekrylova
> N.E.T.

Hi Julia,

You can implement frequency-dependent resistors and inductors in Hspice
using frequency-dependent controlled current or voltage sources, the
LAPLACE function in G or E elements. It lets you specify the frequency
dependence in a pole-zero form or as a frequency table. The pole-zero
form is simulated faster and more accurately.

There is also magnetic core model for L elements (inductors). That one
accounts not only for the frequency dependence but also for the
nonlinear hysteresis effects in ferromagnetics.

Dmitri

=======================================================
Dmitri Kuznetsov, Ph.D.
R&D Engineer, Hspice Group
Avant! Corporation
e-mail: vdm@avanticorp.com
=======================================================