ELEG 3704 Lecture Notes - Lecture 3: Voltage Source, Electromagnetism
10 Sep 2016
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Document Summary
Transmission lines in the context electromagnetics are any medium that guide electromagnetic signals. In the case of an ac signal, the generator circuit can be represented as a voltage source in series with an internal impedance. The load circuit can simply be represented by an equivalent load impedance. When the lines are too long the voltage will be less than the source voltage by a significant amount. light, the voltage at will be delayed in time from the. Assuming the current travels through the wires at the speed of. Lecture notes page 1 source by where is the length of the wire. Since c by too much is the ratio , where is the length of the line and is the wavelength. When is very small the effects may be too small and can be ignored, but when the ratio is around . 01 or greater the transmission line should be accounted for.
