frequency-modulated carrier

См. также в других словарях:

• frequency modulated — modulated modulated adj. (Electronics) 1. Having either amplitude, intensity, frequency, or phase altered at intervals to represent information to be transmitted; of the carrier wave of a radio signal transmitted from one device to another for… …   The Collaborative International Dictionary of English

• Carrier frequency — is a term used to designate: * The nominal frequency of a carrier wave * The center frequency of a frequency modulation signal * The frequency of the unmodulated electrical wave at the output of an amplitude modulated (AM), frequency modulated… …   Wikipedia

• modulated — adj. (Electronics) 1. Having either amplitude, intensity, frequency, or phase altered at intervals to represent information to be transmitted; of the carrier wave of a radio signal transmitted from one device to another for the purpose of… …   The Collaborative International Dictionary of English

• 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

• Frequency-shift keying — Passband modulation v · d · e Analog modulation AM · …   Wikipedia

• Carrier-to-noise ratio — In telecommunications, the carrier to noise ratio, often written CNR or C/N , is the signal to noise ratio (SNR) of a modulated signal. The CNR is the quotient between the average received modulated carrier power C and the average received noise… …   Wikipedia

• Modulated ultrasound — Ultrasound can be modulated to carry an audio signal (like radio signals are modulated). This is often used to carry messages underwater, in underwater diving communicators, and short range (under five miles) communication with submarines; the… …   Wikipedia

• Frequency-division multiplexing — (FDM) is a form of signal multiplexing where multiple baseband signals are modulated on different frequency carrier waves and added together to create a composite signal. Non telephoneFDM can also be used to combine multiple signals before final… …   Wikipedia

• Frequency deviation — (Δf) is used in FM radio to describe the maximum instantaneous difference between an FM modulated frequency and the nominal carrier frequency. The term is sometimes mistakenly used as synonymous with frequency drift, which is an unintended offset …   Wikipedia

• carrier — [kar′ē ər] n. [ME carier < carien, CARRY] 1. a person or thing that carries, as one who delivers mail or newspapers, or a train, bus, airplane, etc. 2. a) a person or company in the business of transporting goods or passengers b) a company in… …   English World dictionary

• 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