[SI-LIST] Question regarding current loop

Assume we have a differential pair, driven in odd mode with no timing offsets.
Assume the pair is terminated with a single resistor between the two traces.
Assume the signal is purely trapezoidal.
Assume there is an underlying plane (but assume what you want about the 
spacing to the plane.)
Assume what you want about the spacing between the traces.
*If* current flows in a closed loop and *if* current is constant everywhere 
in the loop, and *if* current is a point (as opposed to an average) concept 
in time....

What is the definition of the current loop at the instant when the current 
wave form is at the middle of the constant part of the wave form (between 
the rise and fall times)?

Doug Brooks

____________________________________________________________________________-
Check out UltraCAD's differential impedance and skin effect calculators at 
http://www.ultracad.com 

------------------------------------------------------------------
To unsubscribe from si-list:
si-list-request@xxxxxxxxxxxxx with 'unsubscribe' in the Subject field

or to administer your membership from a web page, go to:
http://www.freelists.org/webpage/si-list

For help:
si-list-request@xxxxxxxxxxxxx with 'help' in the Subject field

List FAQ wiki page is located at:
                http://si-list.org/wiki/wiki.pl?Si-List_FAQ

List technical documents are available at:
                http://www.si-list.org

List archives are viewable at:     
                http://www.freelists.org/archives/si-list
or at our remote archives:
                http://groups.yahoo.com/group/si-list/messages
Old (prior to June 6, 2001) list archives are viewable at:
                http://www.qsl.net/wb6tpu

Other related posts: