how does current flows in antennas?

[hossam mahanna]

hi all....

.can any one answer me , about, how does current flows in any antenna?

thank u...

 

[TekNoir]

Short answer -- electromagnetic induction.

More on antennas from the Wikipedia here: https://en.wikipedia.org/wiki/Antenna_(radio)

 

[Papabravo]

The solutions to the wave equation consist of traveling waves and standing waves. The traveling waves move back and forth in the conductors and the standing waves are stationary.

 

[stevez]

For more detailed information you may find Radio Society of Great Britain or American Radio Relay League publications of some value.

 

[k7elp60]

Another way to look at it is that the antenna matches the impedance of the transmission line to the impedance of air. So the air is the load on a transformer, and thus a typical ac circuit.