(radio) A modification of amplitude modulation that modulates the output signal on a single sideband only, as opposed to both sidebands.

(radio) A modulation scheme that conveys data by applying amplitude modulation to two carrier waves at once. These two waves, usually sinusoids, are out of phase with each other by 90° and are thus called quadrature carriers. Commonly abbreviated QAM.

plural of quadrature amplitude modulation

plural of single-sideband modulation

an electronic circuit that causes the phase angle of a modulated wave to vary in accordance with the modulating signal

A device for the pulse modulation of a radio-frequency carrier signal

plural of phase modulator

(astronautics) The spacecraft used in the Apollo missions that was designed for the landing on the surface of the Moon; the lunar excursion module.

plural of lunar module

plural of pulse modulator