Field and Wave Electromagnetics 2nd Edition by David Cheng

تمرين 65

A 100 (V) d-c voltage is applied at t = 0 to the input terminals of a loss less coaxial cable (R 0 1 = 50 ( ), dielectric constant of insulation E r 1 = 2.25) through an internal resistance R 9 = R 01. The cable is 200 (m) long a nd is connected to a lossJess two-wire line (R 02 = 200 ( ), E, r 2 = 1), which is 400 (m) long and is terminated in its characteristic resistance.
a) Describe the transient behavior of the system and find the. amplitudes of all reflected and transmitted voltage and current waves.
b) Sketch the voltage and current as functions oft at the midpoint of the coaxial cable.
c) Repeat part (b) at the midpoint of the two-wire line.