- space quadrature
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A difference of a quarter of a wavelength between the spatial positions of two corresponding points in a wave
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space quadrature
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Quadrature amplitude modulation — (QAM) (Pronounced IPA|kwa:m) is a modulation scheme which conveys data by changing ( modulating ) the amplitude of two carrier waves. These two waves, usually sinusoids, are out of phase with each other by 90° and are thus called quadrature… … Wikipedia
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