- frequency-controlled oscillator
- гетеродин
English-Russian marine dictionary . 2014.
frequency-controlled oscillator
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Voltage-controlled oscillator — A voltage controlled oscillator or VCO is an electronic oscillator designed to be controlled in oscillation frequency by a voltage input. The frequency of oscillation is varied by the applied DC voltage, while modulating signals may also be fed… … Wikipedia
Digitally controlled oscillator — A digitally controlled oscillator or DCO is a hybrid digital/analogue electronic oscillator used in synthesizers. The name is an analogy with voltage controlled oscillator . DCOs were designed to overcome the tuning stability limitations of early … Wikipedia
Numerically controlled oscillator — A numerically controlled oscillator (NCO) is a digital signal generator which creates a synchronous (i.e. clocked), discrete time, discrete valued representation of a waveform, usually sinusoidal.[1] NCOs are often used in conjunction with a… … Wikipedia
Numerically-controlled oscillator — A numerically controlled oscillator (NCO) or digitally controlled oscillator (DCO) is an electronic system for synthesizing a range of frequencies from a fixed timebase. The name is an analogy with voltage controlled oscillator . Note: the term… … Wikipedia
Frequency-locked Loop — (FLL; engl. „Frequenzverriegelte Schleife“) ist ein Verfahren zur Stabilisierung der Ausgangsfrequenz bei Oszillatoren. Entwickelt wurde Frequency Locked Loop 1973 vom niederländischen Funkamateur Klaas Spaargaren PA0KSB. Die Frequenz des VCO… … Deutsch Wikipedia
Frequency synthesizer — A frequency synthesizer is an electronic system for generating any of a range of frequencies from a single fixed timebase or oscillator. They are found in many modern devices, including radio receivers, mobile telephones, radiotelephones, walkie… … Wikipedia
Frequency drift — In electrical engineering, and particularly in telecommunications, frequency drift is an unintended and generally arbitrary offset of an oscillator from its nominal frequency. This can be caused by changes in temperature, which can alter the… … Wikipedia
Frequency divider — A frequency divider, also called a clock divider or scaler or prescaler, is a circuit that takes an input signal of a frequency, fin, and generates an output signal of a frequency: where n is an integer. Phase locked loop frequency synthesizers… … Wikipedia
Frequency multiplier — A frequency multiplier is commonly used in a radio receiver or radio transmitter to multiply the base frequency of the oscillator by a predetermined number. This multiplied frequency is then amplified and sent to the final drive stage and into… … Wikipedia
Frequency Shift Keying — Bildung eines binären FSK Signals. Oben: Quelldaten als eine Folge von logisch 1 und logisch 0. Mitte: Unmodulierte Trägerfrequenz Unten: Moduliertes FSK Signal. Die Frequenzumtastung (englisch Frequency Shift Keying, FSK) ist eine… … Deutsch Wikipedia
Frequency modulation — See also: Amplitude modulation In telecommunications, frequency modulation (FM) conveys information over a carrier wave by varying its frequency (contrast this with amplitude modulation, in which the amplitude of the carrier is varied while its… … Wikipedia
