[SI-LIST] AW: Re: About agilent PLTS-AFR
- From: "Havermann, Gert" <Gert.Havermann@xxxxxxxxxxx>
- To: "taoye000@xxxxxxxxx" <taoye000@xxxxxxxxx>, "Weston Beal (wbeal)" <wbeal@xxxxxxxxxx>
- Date: Tue, 2 Jul 2013 06:51:50 +0000
I tried this some time ago and failed. The biggest problem was the window
function.
Details: I converted the S-parameters to time domain and then applied a
windowing filter to select the start and end of the DUT. Then I converted the
time domain data back into S-parameters. The problem for me was, that I
couldn't use a rectangular window function as the fourier transformation
wouldn't work afterwards. I also found that different window functions had to
be used for different problem types to get meaningful results.
In the end there was not enough time to dig deeper into that.
The theory of fixture removal has been presented in two different DesignCon
papers:
DC2007: A Novel Procedure for Characterization of Multi-port High Speed
Balanced Devices (samtec, ultimetrix)
DC2009: A Comparison of Fixture Removal Methods for Characterization of
Differential PCB Channels (Agilent)
BR
Gert
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-----Ursprüngliche Nachricht-----
Von: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx] Im
Auftrag von ye tao
Gesendet: Dienstag, 2. Juli 2013 03:40
An: Weston Beal (wbeal)
Cc: si-list@xxxxxxxxxxxxx
Betreff: [SI-LIST] Re: About agilent PLTS-AFR
Sorry，You misunderstood what I said，The important is not de-embed.
If we get the half S-param ,we can de-embed with measure data.
But, How to split one S-param to half is trouble me. I want to know this
Method based on what algorithm.
2013/7/1 Weston Beal (wbeal) <wbeal@xxxxxxxxxx>
> ADS has a component to do this on a limited scale. It is limited to 2
> or 4 ports. Look at the de-embed component, and read the ADS documentation.
>
> Weston
>
>
> -----Original Message-----
> From: si-list-bounce@xxxxxxxxxxxxx
> [mailto:si-list-bounce@xxxxxxxxxxxxx]
> On Behalf Of ye tao
> Sent: Monday, July 01, 2013 12:59 AM
> To: si-list@xxxxxxxxxxxxx
> Subject: [SI-LIST] About agilent PLTS-AFR
>
> Hello Experts:
> I know in the PLTS2013£¬have AFR(Automatic Fixture Removal)
> £¬it is better than TRL.
> But, I want to do it in ADS or Matlab environment, is it impossible?
>
> I read some paper, but I can¡¯t find the theory of AFR. The most
> important thing is split the S-parament to half.
>
> I think it need to covert freq domin to time domin,and cut off , then
> covert time domin to freq domin. This way can split the S-parament to half?
> Is it right?
>
> Who can help me? Thanks
>
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