amplitude modulation

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Related to Amplitude modulator: Phase modulator, Modulation index

amplitude modulation

Altering the height (amplitude) of an electrical or acoustical wave.
See: A-mode ultrasound
References in periodicals archive ?
Figure 5 shows the measured constellation of the balanced biphase amplitude modulator at 30 GHz for bias points between +1 and -2 V.
Sources of error requiring amplitude-response variation in the device include detector delay variation with power level, incidental phase modulation in the amplitude modulator and RF source phase noise.
A 360 [degrees] phase shifted and amplitude modulator that can be trimmed easily to a superior accuracy with a procedure requiring amplitude measurements have been presented.
The Digital Cable Modulator is a dual mode 16 or 64 Quadrature Amplitude Modulator that accepts an MPEG-2 digital signal, containing up to 10 digital programs, and converts it to a 6 MHz channel.
Called the Converged Cable Access Platform (CCAP), this new device integrates the functions of broadcast and narrowcast quadrature amplitude modulators (QAMs), as well as DOCSIS([R]) 3.

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