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Input Impedance of Transmission Line

If the length...

Question

If the length of the short circuited transmission line is $\frac{3 λ}{8}$ then the input impedance is

A

zero

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B

contains both real and imaginary part

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C

inductive

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D

capacitive

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Solution

The correct option is D capacitive
$β l = \frac{2 π}{λ} \times \frac{3 λ}{8} = \frac{3 π}{4}$

$Z_{s c} = j Z_{0} tan β l = - j Z_{0}$ capacitive.

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