
62 Microwave Engineering
becomes zero. But since the energy can neither be created nor destroyed, this
burden is to be taken up by the electric eld. In the expression CV
2
/2, line
parameter C (=
ε
A/d) cannot change unless area (A), separation (d) or
ε
in line
gets altered. The change of voltage is the only possibility by which additional
energy can be carried out by E-eld. Thus, the voltage at OC end rises. The volt-
age at OC end is now higher than just before towards the sending end. The cur-
rent starts owing back, which amounts to travelling of the current wave. The
voltage wave joins the race as it was earlier, but this time both (current ...