[SI-LIST] Re: PCB parastic extraction
- From: Andro Radchenko <ar8r3@xxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Sat, 5 Nov 2011 11:16:04 -0600
Sunil,
There is also tool from EMCoS - PCB VirtualLab, which claims to do RLGC
extraction in frequency-dependent fashion by using MoM solution. Here is
some application note:
http://emcos.com/docs/Application_Parasitic_RLC_Extraction_for_GSM_Amplifier.pdf
As input file it loads ODB++ folder, which can usually be exported from PCB
design tools.
Regards,
Andriy
Missouri S&T
EMC Lab
Rolla
On Sat, Nov 5, 2011 at 5:41 AM, steve weir <weirsi@xxxxxxxxxx> wrote:
> That leaves the user to perform the net name association to the art work.
> Steve
> On 11/5/2011 4:37 AM, Ing. Giancarlo Guida wrote:
> > A s far as I remember some of the Ansoft tools
> > had a direct interface to gerber file.
> >
> > For Rf circuit design and modelling there are a number of good tools
> > lihe DEsigner of ADF or AWR
> > that include a field solver for the PCB modelling
> >
> > In case Å?D effects would play a significant role, you may want to
> > consider to use a 3D solver like HFSS or CST Microwave studio to
> > extract a model of the interconnections in terms of S-parameters
> >
> > Hope this helps
> >
> > Giancarlo
> >
> >
> > steve weir ha scritto:
> >> G represents real loss through the dielectric. In order to be causal, G
> >> must be frequency dependent.
> >>
> >> Any of the higher end tools extract RLGC versus frequency. Most if not
> >> all the higher end tools directly extract from Cadence or Mentor format
> >> PCB files. I do not know of any tools that extract from Gerbers.
> >> Gerber format does not natively include any net list information.
> >>
> >> Steve.
> >> On 11/5/2011 4:00 AM, sunil bharadwaz wrote:
> >>
> >>> Hi All ,
> >>> I'am trying to extract the PCB parasitics for RF Layout in the
> process of
> >>> doing impedance matching for a critical circuitry.Freq :: 2- 6 Ghz.
> >>>
> >>> I have few queries as listed below in this regards ..
> >>>
> >>> For a loss'y transmission line the representation should be as RLGC.
> >>> However , most of these extraction tools seem to be extracting
> >>> merely L , C ( independent of frequency )& R as frequency dependent
> >>> skin effect.Should the di-electric related losses be considered as
> >>> "G " ?
> >>>
> >>> Are there tools which extract the PCB parasitics directly in terms of
> RLGC ?
> >>>
> >>> I believe most of the PCB extraction tools are based on 2D field
> simulators.
> >>> Hence , the extraction does not make sense when there is a split plane
> .
> >>> Is the only option is to go for 3D EM simulators ?
> >>>
> >>> If we go for 3D EM simulators , will they be able to extract from the
> PCB
> >>> gerbers directly ?
> >>>
> >>> Can you pls throw some light on the above issues including the
> relevant tools ?
> >>>
> >>> Thanks in Advance !!
> >>>
> >>> Regards
> >>> Sunil
> >>>
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> Steve Weir
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