Question

A transmission line of 50 $\Omega$ characteristic impedance is terminated with a 100 $\Omega$ resistance. The minimum impedance measured on the line is equal to

• A. 50 $\Omega$
• B. 25 $\Omega$
• C. 100 $\Omega$
• D. 0 $\Omega$

Answer 1

The correct option is B 25 $\Omega$

Ans : (b)

$R_L=100\Omega ;R_0=50\Omega$

SWR = $\frac{100}{50}=2$

$Z_{min}=\frac{Z_0}{SWR}=\frac{50}{2}=25\Omega$