Lecture 5 : Standing Waves on Transmission Line & Impedance Transformation
How standing waves are formed on a line?
The voltage and current on the line are superposition of the two waves travelling in the opposite directions.
Where is the distance measured from the load towards the generator
The result is a 'Standing Wave'. Ofcourse in general it is a partial standing wave since the amplitudes of the two
travelling waves may not be equal.
Figure shows the voltage standing wave on the line. We may note how the nature of the wave changes from
'travelling' to 'standing' when we vary and . (Try different values for )
When , , there is no backward wave and therefore the net wave is the 'Forward Travelling Wave'.
On the other hand when , the wave will be fully standing wave.
is the distance measured from the load towards the generator 
and 
. (Try different values for 
) 
, there is no backward wave and therefore the net wave is the 'Forward Travelling Wave'.
, the wave will be fully standing wave.
