A transmission technique that inserts information onto an electrical carrier wave by varying the amplitude of the carrier.

Any method of varying the amplitude of an electromagnetic carrier frequency in accordance with the intelligence to be transmitted.

Transmitting information (voice or music, for example) by modulating, or varying, the amplitude (magnitude of voltage or current) of a carrier wave in proportion to a second signal that carries that information. Usually, the carrier wave is mixed with the modulating signal in a nonlinear device that produces discrete upper and lower sidebands, which are the sum and difference frequencies of the carrier and signal. The resulting AM wave is an analog of the modulating signal.

The signal carries the desired information content by varying the amplitude or height of the carrier wave.

The simplest carrier modulation technique, where the radio frequency carrier's amplitude envelope is modulated.

A modulation technique involving computers in which the amplitude of a signal is varied to differentiate between a binary 1 and 0. See Frequency Modulation.

One of the methods for transmitting information using radio waves by superimposing the information signal onto a radio frequency carrier wave. The amplitude of the carrier wave is varied in accordance with the time-varying amplitude of the input signal. The frequency of the carrier wave remains unchanged.

Form of modulation in which the amplitude of the carrier is varied in accordance with the instantaneous value of the modulating signal.

Changing the amplitude of a carrier wave by some means so that the resultant waveform transmits a signal conveying information. For example, if the carrier wave with angular frequency ω is cos(ω), the corresponding amplitude-modulated signal is where () is a function that varies more slowly with time than does the carrier wave. Compare frequency modulation.

The process whereby the amplitude (or strength) of an analog signal is varied to carry digital information. A popular method used in low cost modems.

1. The encoding of a carrier wave by variation of its amplitude in accordance with an input signal. 2.    A broadcast system that uses amplitude modulation.

AM - The modification of the magnitude of a higher, constant frequency carrier signal controlled by the amplitude and phase of a lower frequency baseband or audio signal.

A method of modulation in which the amplitude of the carrier voltage is varied in proportion to the changing frequency value of an applied (audio) voltage.

A method of impressing audio signals on a radio carrier signal by varying the strength (amplitude) of the carrier.

Cyclical Variations of the amplitude of a cyclical wave. See also Frequncy modulation.

a process of modulating the carrier wave in which the amplitude of the carrier wave is changed in sympathy with the modulating signal (information)

modulation of the amplitude of the (radio) carrier wave

This type of modulation uses the time-product of the signal to be transmitted with a sinus wave of suitable frequency.

Signals modulated by varing the amplitude (magnitude) of the carrier wave to create the desired information content.

A technique whereby the voltage level or amplitude of a carrier is varied in order to transmit digital or analog information.

AM. Original system for radio broadcasting. Operates in the KiloHertz band.

The strength of the radio frequency carrier is made proportional to the information signal.

This type of modulation varies the height of the carry frequency by encoding a sigal upon it.

A communications scheme that modifies the amplitude of a carrier signal according to the amplitude of the modulating signal.

A form of modulation where the amplitude, or level of the carrier, is modulated by the baseband signal.

Data is contained in changes in amplitude of the carrier

field module selection

A method of impressing a message upon a carrier signal by causing the carrier amplitude to vary proportionally to the message waveform.

A method of radio broadcasting in which the radio carrier frequency is amplitude modulated by the audio signal. Typically limited in bandwidth, and susceptible to interference and static. However, it propagates well over long distances and around hills and buildings. Abbreviated AM.

A modulation technique that varies the power output of a transmitter in accordance with the variations in the modulating audio signal.

A type of modulation in which the amplitude (magnitude) of the carrier frequency is varied to convey the desired information content. An AM signal consists of the carrier wave, and two sidebands, one above, and one below, the carrier frequency

The baseband signal is caused to vary the amplitude or height of the carrier wave to create the desired information content.

means that the amplitude of a cycle varies over a longer cycle. For example, radio uses AM to transmit an audible sound of say 400 Hz by varying the amplitude of a radio signal with frequency 100,000 Hz.

Amplitude is the distance between the peaks and troughs of a waveform and its average value. Amplitude modulation is the process of representing information by alternating and controlling the amplitude.

A means of adding voice or data to a radio frequency transmission by varying the amplitude of the carrier frequency. Broadcast stations in the "AM" band on a car radio use this modulation technique. AM is susceptible to static from electrical sources such as atmospheric noise, thunderstorms and electrical appliances.

Adding information to an RF carrier by increasing and decreasing amplitude.

A technique for transmitting radio signals. See also Medium Wave (MW).

Modulation in which the amplitude of the carrier wave is varied above and below its normal value in accordance with the intelligence of the signal being transmitted. Also called AM.

A means of transmitting and receiving radio waves that is based on variances in the amplitude of the radio waves. See also FM.

A type of transmission used in either the standard radio broadcast band at 535-1705 kilohertz, short wave broadcasting, and in some private radio services such as citizens band (CB) and aviation.

n. A method of encoding information in a transmission, such as radio, using a carrier wave of constant frequency but of varying amplitude. Acronym: AM.

Where audio signals increase and decrease the amplitude of the "carrier wave".

A form of radio broadcast, (abbr: AM); literally means that the carrier frequency is modulated, or varies, in size (amplitude) according to the content of the transmitted signal.

A transmission technique in which the amplitude of the carrier is varied in accordance with the signal.

The encoding of a carrier wave by variation of it's amplitude in accordance with an input signal. AM Stereo

The process of impressing information on a radio frequency signal by varying its amplitude. Generally amplitude modulation is used for the purpose of relaying messages by voices, television, facsimile or other modes.

A form of modulation in which the amplitude of a carrier wave is varied in direct proportion to that of a modulating signal and the frequency remains constant. See also Frequency Modulation.

Was initially the primary means of radio modulation used in R/C until recently. The control information is transmitted by varying the amplitude of the signal. AM is now used in only less sophisticated systems.

(A.M.) The changing of the amplitude level by a control signal.

CW modulation using amplitude variation in proportion to the amplitude of the modulation signal; usually taken as DSB-LC for commercial broadcast transmissions and DSB-SC for multiplexed systems.

Changing the amplitude of a radio wave. A higher wave is interpreted as a 1 and a normal wave is interpreted as a zero. By changing the wave, the RFID tag can communicate a string of binary digits to the reader. Computers can interpret these digits as digital information. The method of changing the amplitude is known as amplitude shift keying, or ASK.

A form of modulation which works by superimposing an information signal onto an RF carrier by varying the amplitude of successive sine waves of the carrier.

Amplitude modulation (AM) is a technique used in electronic communication, most commonly for transmitting information via a radio carrier wave. AM works by varying the strength of the transmitted signal in relation to the information being sent, for example, changes in the signal strength can be used to reflect the sounds to be reproduced by a speaker, or to specify the light intensity of television pixels. (Contrast this with frequency modulation, also commonly used for audio transmissions, in which the frequency is varied; and phase modulation, often used in remote controls, in which the phase is varied.)