Amplitude Modulation

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Amplitude modulation (AM) is a technique used in electronics most commonly for transmitting information via radio carrier wave. The final modulation consists of three components: carrier, lower side band, and upper side band. Various combinations of these components create various types of AM with different properties for information transfer. Also, modulation depth has a big influence on modulation properties. The carrier signal with amplitude modulation is illustrated in blue while the modulating signal (sine wave) is in orange.

Contributed by: Jakub Serych (March 2011)
Open content licensed under CC BY-NC-SA


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