Re: [SI-LIST] : Proposal: Rs correlation/collaboration for W-Elem ents

Dmitri Kuznetsov (vdm@iname.com)
Wed, 04 Aug 1999 19:17:38 -0700

Raghu,

Thank you for pointing to the Giulio Antonini's paper on the
Sqrt(f)*(1+j)*Rs skin-effect equation in July issue of IEEE Transactions
on MTT. According to this paper, the error in the inductance introduced
by this equation is about 30% at higher frequencies for rectangular
geometries. This obviously translates into delay error. But even
larger error is created by its singular dc inductance.

The Sqrt(f)*Rs skin-resistance equation with frequency-response
correction that I used in W element before it was changed to
Sqrt(f)*(1+j)*Rs in 99.2 Hspice release is valid for any geometry at
high frequencies. And the inductive component that I restored by
frequency-response correction was well-behaved at low frequencies.