- quadrature components
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Англо русский политехнический словарь. Академик.ру. 2011.
quadrature components
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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
Quadrature filter — In signal processing, a quadrature filter q(t) is the analytic representation of the impulse response f(t) of a real valued filter::q(t) = f {a}(t) = left(delta(t) + {i over pi t} ight) * f(t)If the quadrature filter q(t) is applied to a signal… … Wikipedia
Quadrature phase — Communication signals often have the form::A(t)cdot sin [2pi ft + phi(t)] , which is called envelope and phase form.An equivalent representation, called quadrature carrier form, is::I(t)cdot sin(2pi ft) + Q(t)cdot underbrace{cos(2pi ft)}… … Wikipedia
Adaptive quadrature — In applied mathematics, adaptive quadrature is a process in which the integral of a function f(x) is approximated using static quadrature rules on adaptively refined subintervals of the integration domain. Generally, adaptive algorithms are just… … Wikipedia
Phase-shift keying — Passband modulation v · d · e Analog modulation AM · … Wikipedia
Minimum-shift keying — Passband modulation v · d · e Analog modulation AM · … Wikipedia
Quantum noise — is uncertainty of some physical quantity due to its quantum origin.In the case of number of particles (photons or electrons), the quantum noise is also called shot noise. Most optical communications use amplitude modulation. In this case, the… … Wikipedia
синфазные и квадратурные компоненты — (МСЭ R F.1499). [http://www.iks media.ru/glossary/index.html?glossid=2400324] Тематики электросвязь, основные понятия EN in phase and quadrature componentsIQ … Справочник технического переводчика
Circular polarization — The electric field vectors of a traveling circularly polarized electromagnetic wave. In electrodynamics, circular polarization[1] of an electromagnetic wave is a polarization in which the electric field of the passing wave does not change… … Wikipedia
Single-sideband modulation — (SSB) is a refinement of amplitude modulation that more efficiently uses electrical power and bandwidth. It is closely related to vestigial sideband modulation (VSB) (see below).Amplitude modulation produces a modulated output signal that has… … Wikipedia
Antenna (radio) — Whip antenna on car … Wikipedia
