Lecture 5 : Standing Waves on Transmission Line & Impedance Transformation
Impedance at any Point on the Line
Impedance at a distance from the load is
and
We therefore get,
Rearranging terms and noting that and , we get
Important
Impedance measured at line is not same as and is location dependent.
Impedance seen by the generator for a given load impedance varies a function of the line length and
consequently the power supplied by the generator becomes a function of line length.
Just changing the connecting wires the circuit performance will change.
from the load is 
and 
, we get
and is location dependent. 
