# Re: [SI-LIST] : RESULTS(8/6/99) to Proposal: Rs

Mike Ventham ([email protected])
Fri, 06 Aug 1999 16:43:56 +0100

Richard,

Here are the results of the Canadian jury for your Rs Correlation project.

Our figures using our Greenfield field solver are as follows:-
Rs = 1.35629e-3 Ohms/(sqrt(Hz).meter)
RO = 4.45403 Ohms/meter

"Mellitz, Richard" wrote:
>
> All,
> Here is the data I have compiled for Rs predictions so far (8/6/99).
> Thanks to all who participated in this study.
> Richard Mellitz, Intel
> _______________________________________________
> Problem Microstrip Geometry:
> 6 mil wide
> +------------+
> +------------+ 1 mil thick
> 4 mil = height
> -----------------------------------ground/return
>
> sigma=5.8e7 mho/m
>
> Table:
> ________________________________________________
>
> Equation: signal + ground
> Rs= 1.806e-3 Ohms/(sqrt(Hz).meter)
> Equation: signal alone
> Rs= 1.455e-3 Ohms/(sqrt(Hz).meter)
> R0= 4.454 Ohms/meter
> SIMPEST (COMPAC) (lossy ground plane, high frequency asymptote)
> Rs= 1.3555e-3 Ohms/(sqrt(Hz).meter)
> RO= 4.519685 Ohms/meter
> AP SIM (lossy ground plane, curve fit value)
> Rs= 1.245e-3 Ohms/(sqrt(Hz).meter)
> R0=5.346 Ohms/meter
> ANSOFT (lossy ground plane, curve fit value)
> Rs= 1.279e-3 Ohms/(sqrt(Hz).meter)
> R0= 4.45 Ohms/meter
> SIMIAN Version 2.1 tool developed at the University of Texas, Austin (lossy
> ground plane, curve fit value)
> Rs= 1.419.e-3 Ohms/(sqrt(Hz).meter)
> R0= 4.454 Ohms/meter
> Quad Design's XFX (universe =50 mils, Lambda =1, Integral Mode, multiplying
> by sqrt(2*pi))
> Rs= 1.314E-3 Ohms/(sqrt(Hz).meter)
> R0= 4.456 Ohms/meter
> HSPICE 98.4 field solver
> RS= 7.26284e-04 Ohms/(sqrt(Hz).meter)
> RO= 4.37069 Ohms/meter

```--
Regards

Mike
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