GATE Electronics and Communications (EC) 2020 Solved Papers

Question : 11 of 65

Marks: +1, -0

A transmission line of length

3 λ {/} 4

and having a characteristic impedance of

50 Ω

is terminated with a load of

400 Ω

. The impedance (rounded off to two decimal places) seen at the input end of the transmission line is

. . . . Ω

Solution:

Given, characteristic impedance

{Z}_{0}=50 Ω

Load impedance

{Z}_{ {L}}=400

And input impedance

Z_{\;\text "in "\;}=(Z_{0})^{2} {/} Z_{L}

=50^{2} {/} 400

=6.25 Ω

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