[SI-LIST] Re: near and far end crosstalk in frequency domain
- From: "Istvan NOVAK" <istvan.novak@xxxxxxxxxxxxxxxx>
- To: <zhang_kun@xxxxxxxxxx>, "si-list" <si-list@xxxxxxxxxxxxx>
- Date: Tue, 8 Jun 2004 08:11:50 -0400
Dear Zhangkun,
Unless you have a perfectly homogeious cross section of
material that carries the field, there is always a far-end
crosstalk component, even if you have perfect termination.
One major difference between near-end and far-end
crosstalk is that far-end crosstalk saturates at full coupling.
This means that beyond a certain frequency, the far-end
crosstalk response may be bigger than the near-end crosstalk
response. 'May be' refers to the fact that both near-end and
far-end crosstalk vary sinusoidally with frequency, but with
different periodicity: near-end crosstalk's periodicity depends
on the electrical length of coupled section, far-end crosstalk's
periodicity depends on the electrical length of coupled section
AND the strength of coupling.
Regards,
Istvan
----- Original Message -----
From: "Zhangkun" <zhang_kun@xxxxxxxxxx>
To: "si-list" <si-list@xxxxxxxxxxxxx>
Sent: Monday, June 07, 2004 11:02 PM
Subject: [SI-LIST] near and far end crosstalk in frequency domain
> Dear all
> Now, we are analyzing the crosstalk between transmission line. There is
something interesting. The far end crosstalk is larger than the near end
crosstalk in frequency domain. Have anybody meet the similar problem?
>
> Best Regards
>
> Zhangkun
> 2004.6.8
>
>
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