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carrier recovery loop

См. также в других словарях:

  • Carrier recovery — A carrier recovery system is a circuit used to estimate and compensate for frequency and phase differences between a received signal s carrier wave and the receiver s local oscillator for the purpose of coherent demodulation. Example of QPSK… …   Wikipedia

  • Phase-locked loop — PLL redirects here. For other uses, see PLL (disambiguation). A phase locked loop or phase lock loop (PLL) is a control system that generates an output signal whose phase is related to the phase of an input reference signal. It is an electronic… …   Wikipedia

  • Costas loop — A Costas loop is a phase locked loop used for carrier phase recovery from suppressed carrier modulation signals, such as from double sideband suppressed carrier signals. It was invented by John P. Costas at General Electric in the 1950s. Its… …   Wikipedia

  • Digital down converter — In digital signal processing, a digital down converter (DDC) converts a digitized real signal centered at an intermediate frequency (IF) to a basebanded complex signal centered at zero frequency. In addition to downconversion, DDC’s typically… …   Wikipedia

  • Phase detector — A phase detector is a frequency mixer or analog multiplier circuit that generates a voltage signal which represents the difference in phase between two signal inputs. It is an essential element of the phase locked loop (PLL).Detecting phase… …   Wikipedia

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  • Diode — Figure 1: Closeup of a diode, showing the square shaped semiconductor crystal (black object on left) …   Wikipedia

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  • China — /chuy neuh/, n. 1. People s Republic of, a country in E Asia. 1,221,591,778; 3,691,502 sq. mi. (9,560,990 sq. km). Cap.: Beijing. 2. Republic of. Also called Nationalist China. a republic consisting mainly of the island of Taiwan off the SE coast …   Universalium

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  • Attack on Sydney Harbour — Infobox Military Conflict conflict=Attack on Sydney Harbour partof=the Battle for Australia during World War II caption=1 June 1942. A Japanese Ko hyoteki class midget submarine, believed to be Midget No. 14, is raised from Sydney Harbour date=31 …   Wikipedia

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