Radio is the radiation of electromagnetic energy through space. The biggest use of radio waves is to carry information, such as sound, by systematically changing some property of the radiated waves, such as their amplitude, frequency, phase, or pulse width. When radio waves strike an electrical conductor, the oscillating fields induce an alternating current in the conductor. The information in the waves can be extracted and transformed back into its original form.
Radio systems need a transmitter…
Words 3320 - Pages 14
