carrier oscillator

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

• Oscillator phase noise — For more general information, see Phase noise. Oscillators inherently produce high levels of phase noise. That noise increases at frequencies close to the oscillation frequency or its harmonics. With the noise being close to the oscillation… …   Wikipedia

• Carrier wave — In telecommunications, a carrier wave, or carrier is a waveform (usually sinusoidal) that is modulated (modified) with an input signal for the purpose of conveying information, [citeweb|title=Carrier wave with no modulation transports no… …   Wikipedia

• oscillator — /os euh lay teuhr/, n. 1. Electronics. a circuit that produces an alternating output current of a certain frequency determined by the characteristics of the circuit components. 2. a device or machine producing oscillations. 3. a person or thing… …   Universalium

• oscillator — i. An electronic circuit that converts energy from a direct current source to a periodically varying electric output. ii. The stage of a superheterodyne receiver that generates a radio frequency signal of the correct frequency to mix with the… …   Aviation dictionary

• Microelectromechanical system oscillator — Microelectromechanical system (MEMS) oscillators are timing devices that generate highly stable reference frequencies. These reference frequencies are used to sequence electronic systems, manage data transfer, define radio frequencies, and… …   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

• Reduced-carrier transmission — is an amplitude modulation (AM) transmission in which the carrier wave level is reduced to reduce wasted electrical power. Suppressed carrier transmission is a special case in which the carrier level is reduced below that required for… …   Wikipedia

• local oscillator — /loʊkəl ˈɒsəleɪtə/ (say lohkuhl osuhlaytuh) noun an oscillator in a receiver, whose output is mixed with a signal borne by a carrier wave in order to change to a new carrier frequency …  

• chrominance carrier reinsertion oscillator — spalvių nešlio atkūrimo generatorius statusas T sritis radioelektronika atitikmenys: angl. chrominance carrier reinsertion oscillator vok. Farbträger Wiedereinführungsoszillator, m rus. генератор восстановления цветовой поднесущей, m pranc.… …   Radioelektronikos terminų žodynas

• Beat frequency oscillator — A beat frequency oscillator or BFO in radio telegraphy, is a dedicated oscillator used to create an audio frequency signal from carrier wave transmissions to make them audible, as they are not broadcast as such. The signal from the BFO is then… …   Wikipedia