[SI-LIST] Re: cross talk (direction of E-Filed)
- From: Ed Sayre III <esayre3@xxxxxxxx>
- To: kbagga31@xxxxxxxxx
- Date: Wed, 27 Aug 2003 14:17:24 -0400
Karan,
You will have both a forward and a backward traveling waves induced on
the victim line from the aggressor line. The forward or far end (fext)
crosstalk will arrive at the same time as the aggressor pulse if the lines
are of equal length. The backward or near end (next) crosstalk will arrive
at the near end of the line for up to 2 delays of the couple section. This
is because the aggressor wave will couple to the victim line as it travels
down the line (the first delay), and the NEXT signal on the victim line
will have propagate back (the second delay). Much of the timing or
frequency response of a crosstalk phenomena depends on how much coupling
you have and the length of the coupled segment.
In general, since there will be a forward and a backward traveling wave
induced on the victim line, you will, by first principles, have both a
forward and a backward current component on the victim line. Hope this helps.
Regards
-Ed
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
NORTH EAST SYSTEMS ASSOCIATES, INC
-------------------------------------
"High Performance Engineering & Design"
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Dr. Edward Sayre 3rd e-mail: esayre3@xxxxxxxx
NESA, Inc. http://www.nesa.com/
5 Lan Drive, Suite 200 Tel +1.978.392-8787 x 218
Westford, MA 01886 USA Fax +1.978.392-8686
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
At 09:46 PM 8/26/2003 -0700, karan bagga wrote:
>If I have 2 conductors lying parallel & I introduce a pulse on one conductor
>then what will be the direction of current ( ELectric field) on the second
>cundoctor
>at RISING EDGE and FALLING EDGE of the second conductor ?
>
>
>Regards
>Karan
>
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