Share this entry

Share this page

amplitude modulation

Syllabification: am·pli·tude mod·u·la·tion
(abbreviation: AM)

Definition of amplitude modulation in English:

noun

The modulation of a wave by varying its amplitude, used chiefly as a means of radio broadcasting, in which an audio signal is combined with a carrier wave. Often contrasted with frequency modulation.
Example sentences
  • A controller selectively controls the first and second transistors to achieve amplitude modulation at a high modulation bandwidth.
  • Its phase can be adjusted to compensate for propagation delays in the drive circuitry, while amplitude modulation is accomplished by switching in additional reactive conductance to increase the current injected into the tank circuit.
  • Optical systems are used to generate the original signal which is passed, using amplitude modulation to a 300GHz photodiode, which creates an electrical signal that is passed to a direct slot antenna.

Definition of amplitude modulation in:

Share this entry

Share this page

 

What do you find interesting about this word or phrase?

Comments that don't adhere to our Community Guidelines may be moderated or removed.

Get more from Oxford Dictionaries

Subscribe to remove ads and access premium resources

Word of the day terpsichorean
Pronunciation: ˌtərpsikəˈrēən
adjective
of or relating to dancing