Carrier waves are used to carry information from transmitter to receiver The carrier wave will be radio or microwave frequency There are two methods of using the carrier wave to carry information - amplitude modulation and frequency modulation In radio transmissions for example, the carrier is of a much higher frequency than the audio wave which is to be transmitted The higher the frequency of the carrier, the higher the quality of the transmitted signal
An electromagnetic wave that is emitted by a radio transmitter in order to carry information The information is superimposed onto the carrier by making small changes to either its amplitude or its frequency
Transmitted energy which is modulated in order to carry information Usually, it is in the form of a radio-frequency sine wave, modulated either in amplitude or in frequency
Transmitted energy which is modulated in order to carry information Usually, it is in the form of a radio- frequency sine wave, modulated either in amplitude or in frequency