How Do Radio Transmitters Create Radio Waves?
The information encoded in a radio broadcast signal is contained in the signal’s modulation, but before the signal can be modulated, the carrier radio wave has to be generated. In broadcast communications, carrier radio waves are created by the electrical device known as a transmitter.TransmitterA transmitter is a device that sends out information. In broadcast communications, the radio transmitter is usually attached to an antenna. It is these two devices that work in concert to generate radio waves.Radio WavesRadio waves are the lowest part of the electromagnetic spectrum, which also consists of microwaves, infrared waves, visible light waves, ultraviolet waves and X-ray waves.BackgroundElectromagnetic waves are produced by the movement of electrically charged particles. When electrically charged particles move, they generate an oscillating electric field. The oscillating electric field then generates an oscillating magnetic field. An electromagnetic wave is basically the combination
