Question

A 50 ohm lossless transmission line has a pure reactance of (j 100) ohms as its load. The VSWR in the line is

• A. 2 (Two)
• B. 4 (Four)
• C. 1/2 half
• D. $\infty$ (Infinity)

Answer 1

The correct option is D $\infty$ (Infinity)

Ans :(d)

Reflection coefficient = $\Gamma =\frac{Z_L-Z_0}{Z_L+Z_0}$

= $\frac{j100-50}{j100+50}$

$\left|\Gamma \right|=\frac{\sqrt{(100{)}^2+(50{)}^2}}{\{\sqrt{(100{)}^2+(50{)}^2}}=1$

VSWR = $\frac{1+\left|\Gamma \right|}{1-\left|\Gamma \right|}=\frac{1+1}{1-1}=\frac{2}{0}=\infty$