[SI-LIST] Re: Transmsision lines
- From: "Mike Heimlich" <mike@xxxxxxxxxxx>
- To: <lalexman@xxxxxxxxxxx>, <si-list@xxxxxxxxxxxxx>
- Date: Sat, 15 Oct 2005 12:22:53 -0700
Hi Leonard:
Think about in terms of a clothes line or jump rope tied to a tree. If
you give the rope a 1 foot amplitude "pulse" toward the tree every 1
second then when your first pulse hits the tree and bouncing back,
whenever the these "reflected" pulses traveling towards you cross one of
your newer pulses traveling towards the tree, the amplitude appears to
double.
A great book for this would be Pozer's:
http://www.amazon.com/gp/product/0471448788/102-8608449-7188142?v=3Dglanc=
e
&n=3D283155&s=3Dbooks&v=3Dglance
Hope that helps.=20
-----Original Message-----
From: si-list-bounce@xxxxxxxxxxxxx [mailto:si-list-bounce@xxxxxxxxxxxxx]
On Behalf Of Leonard Alexman
Sent: Saturday, October 15, 2005 2:18 PM
To: si-list@xxxxxxxxxxxxx
Subject: [SI-LIST] Transmsision lines
Hi,
=20
I am trying to figure out transmission lines and reflections and trying
to understand why if the load is open or a high resistance the voltage
that arrives at the load is doubled and the signal is them reflected
back to the source. I understand there is an impedance mismatch but in
all the articles I have found not explains in basic terms wht the
voltage doubles and reflects back down the line. Can anyone point me to
an article that might explain this in basic terms ?
=20
TIA
=20
Leonard Alexman
=20
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=20
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