[SI-LIST] Diode Termination
- From: Ria R <ria_rr_84@xxxxxxxxx>
- To: si-list@xxxxxxxxxxxxx
- Date: Thu, 13 Dec 2007 20:21:16 -0800 (PST)
All,
I have a question on something I read about diode termination.
Howard Johnson in one of his answers to a diode termination question says the
following:
One equation of interest regarding the theory of diode terminations is
the relation between the incident signal amplitude traveling down
a transmission line (I), the amplitude of the signal reflected at the end
of a line (R), and the amplitude of the signal that exits the line and
is apparent at the load (T).
I am clear about "I" and "R". But what does "T" mean? I thought there was just
signal incident and signal reflected. Is there a signal "Exiting"??
Also, if this is explained, the next question is, what does he mean by:
In English, the signal at the end of the line is the superposition of
whatever came in, plus whatever bounced back toward the driver. This
same equation may be re-written to express "R" as a function of "T" and
"I":
R = T - I
Can someone please clarify the above equation??
Thanks in advance.
Regards,
Ria.
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