[SI-LIST] Re: Extract/Convert Lumped Spice model to T-line model

The correct equivalent model will have to have a pair of coupled transmission 
lines. 
Does LineSim support coupled transmission lines? 

To generate the coupled-line equivalent model, you can use the optimization 
feature of 
HSPICE, using, for example, frequency-dependent S-parameters as your goal. That 
is, you 
continue to vary the variables of your new model and you stop when the 
S-parameters of 
the new model match the S-parameters of the original model in the frequency 
range of 
interest. 

Hassan.

On Feb 25, Gian YK-r58635 <yeekoy.gian@xxxxxxxxxxxx> wrote:
> 
> All,
> 
> I am new to HSPICE and also simulation. I need some advise on how to convert 
> the 
lumped SPICE model below to a T-line model (so that I can model it as a 
connector in 
LineSim). It is a compatible model for test probe.
> 
> Cs:Total shunt capacitance
> C21:Mutual-capacitance between adjacent pins
> Ls:Pin self-inductance
> Lm:Mutual inductance between adjacent pins
> Rs:Shunt-resistance of inductors Rs used to model high frequency loss due to 
> skin 
effect and dielectric loss
> 
> 
>         GND                GND
>          |                  |
>         Cs/2  |---Rs---|   Cs/2
>          |    |        |    |
>     o-------------Ls-------------o
>               |        |
> IN           C21      C21           OUT
> (DUT)         |        |            (BOARD)
>               |        |
>     o-------------Ls-------------o
>          |    |        |    |
>         Cs/2  |---Rs---|   Cs/2
>          |                  |
>         GND                GND
> 
> 
> 
> Thanks & best regards,
> YK

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