Demodulator

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Demodulator - A demodulator is an electronic circuit used to recover the information content from the carrier wave of a signal. The term is usually used in connection with radio receivers, but there are many kinds of demodulators used in many other systems.

Error vector magnitude - The error vector magnitude or EVM is a measure used to quantify the performance of a phase-shift modulation radio demodulator.

Product detector - A product detector is a type of demodulator used for AM and SSB signals. Rather than converting the envelope of the signal into the decoded waveform like an envelope detector, the product detector takes the product of the modulated signal and a local oscillator, hence the name.

Modem - A modem (a portmanteau word constructed from modulator and demodulator) is a device that modulates a carrier signal to encode digital information, and also demodulates such a carrier signal to decode the transmitted information. The goal is to produce a signal that can be transmitted easily and decoded to reproduce the original ...


Suggested Web Sites

RF Micro Devices - Manufacturer of RF integrated circuits. Product line includes quadrature modulators, quadrature demodulators, LNA/mixers, IF amplifiers, attenuators, and linear power amplifiers.

Product Index | Pulsar Microwave Corporation - RF components, including: mixers, power dividers / combiners, couplers, hybrids, bias tees, modulators, demodulators, frequency doublers, and phase shifters. Surface mount, stripline, high and low frequency.

Olson Technology Inc. - Specializes in RF Broadband design and development of demodulators, processors, return band spectrum multipliers, and combiners for the CATV, CCTV, Educational, Security, Broadcast, Aircraft Entertainment, and OEM markets.

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