CHARACTERISTIC IMPEDANCE, Z0, is the ratio of E to I at every point along the line. For
maximum transfer of electrical power, the characteristic impedance and load impedance must be matched.
The VELOCITY at which a wave travels over a given length of transmission line can be found by
using the formula:
A transmission line that is not terminated in its characteristic impedance is said to be FINITE.
When dc is applied to an OPEN-ENDED line, the voltage is reflected back from the open end
without any change in polarity, amplitude, or shape. Current is reflected back with the same amplitude
and shape but with opposite polarity.