Voltage Standing Wave Ratio (VSWR)

Recall the voltage equation with repect to z,





Notice That :
(1) VSWR =1 means no reflection
(2) VSWR =infinity means wave is totally reflected

That implies that if one of the points in the figure |V|/|V|(max) touches zero,
VSWR -> infinity

In other words, when VSWR= infinity, there exists some/a point(s) such that the wave is total cancelled due to suposition between incident wave and reflected wave.


Important Notes:
(1)Once again VSWR is a ratio comparing between
Max and Min e.g VSWR= n means VSWR= n:1 etc.
(2)The particular representation
for |V|/|V|(max), you may consider


Then, by the consideration of different z, you can get the values
of each point one by one and at the end obtain the figure.