[SI-LIST] Re: RLC value extraction for power plane
- From: Faraydon Pakbaz <pakbazf@xxxxxxxxxx>
- To: steve weir <weirsi@xxxxxxxxxx>
- Date: Fri, 5 Aug 2011 08:36:25 -0400
Hi Steve;
This will give Impedance Transfer function and using partial fraction
method you can convert this to RLC
representation. Is this what you meant? Thanks.
Regards;
Don Pakbaz
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|steve weir <weirsi@xxxxxxxxxx>
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|Rohit MISHRA <rohit.mishra@xxxxxx>
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|"si-list@xxxxxxxxxxxxx" <si-list@xxxxxxxxxxxxx>, "bennyluiss@xxxxxxxxx"
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|08/05/2011 04:01 AM
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|[SI-LIST] Re: RLC value extraction for power plane
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Rohit, fit poles and zeroes to the mag/phase response.
Steve.
On 8/5/2011 12:23 AM, Rohit MISHRA wrote:
> Hello Benny,
>
>
> Welcome to the world of Signal Integrity !! :-)
>
>
> I am not sure if hyperlynx has ability to extract RLGC values but you can
sure use other field solvers like momentum, Q3D or HFSS to extract RLGC/Z
parameters of power plane.
>
> To extract RLGC value from field solver, you don't need to define voltage
values instead you define ports at both end of traces and define the
frequency range of interest, that's all !
>
> Steve,
>
> I understand that ac current source can be used to find complex impedance
or PDN impedance in this case but if someone is interested in finding RLGC
values, how is it possible to extract from PDN impedance ??
>
> Rgds,
> Rohit
>
>
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of steve weir
> Sent: Friday, August 05, 2011 11:49 AM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] Re: RLC value extraction for power plane
>
> Define a port and apply an AC current source at the location where you
> want to know the impedance. Sweep the frequency range of interest. The
> complex voltage divided by the excitation current yields the complex
> impedance.
>
> Steve.
> On 8/4/2011 10:15 PM, Benny Luiss wrote:
>> Hi,
>>
>> I am Benny an SI novice.Can any one help how to extract RLC values for
power plane. I have tried in Cadence and Hyperlynx but couldn't able to
extract (even by removing voltage values assigned for the power nets).
>> Do any other software like Ansoft or HFSS provide this?
>>
>>
>> Thanks,
>> Benny
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--
Steve Weir
IPBLOX, LLC
150 N. Center St. #211
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