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intermediate-frequency signal

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  • intermediate frequency — n. Radio in superheterodyne reception, a frequency resulting from combining the incoming signal with a locally produced signal for amplification prior to detection …   English World dictionary

  • Intermediate frequency — In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier frequency is shifted as an intermediate step in transmission or reception. The intermediate frequency is created by mixing the carrier… …   Wikipedia

  • intermediate frequency — noun : a relatively low frequency to which a signal is converted before demodulation in heterodyne reception abbr. i.f …   Useful english dictionary

  • Zero Intermediate Frequency — is a radio demodulation technique that does not use an intermediate frequency, but utilizes only one mixer stage to convert the desired signal directly to and from the baseband without any IF stages and without the need for external SAW filters …   Wikipedia

  • Frequency mixer — This article is about non linear mixing operating in the frequency domain. For other types of mixers, see electronic mixer. Frequency Mixer Symbol. In electronics a mixer or frequency mixer is a nonlinear electrical circuit that creates new… …   Wikipedia

  • Frequency range — A frequency range or frequency band is a range of wave frequencies. It most often refers to either a range of frequencies in sound or a range of frequencies in electromagnetic radiation, which includes light and radio waves. Many radio devices… …   Wikipedia

  • intermediate — adj., n., & v. adj. coming between two things in time, place, order, character, etc. n. 1 an intermediate thing. 2 a chemical compound formed by one reaction and then used in another, esp. during synthesis. v.intr. (foll. by between) act as… …   Useful english dictionary

  • 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

  • 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

  • Ultra high frequency — (UHF) designates a range (band) of electromagnetic waves with frequencies between 300 MHz and 3 GHz (3,000 MHz). Also known as the decimeter band or decimeter wave as the wavelengths range from ten to one decimeters. Radio waves with frequencies… …   Wikipedia

  • Tuned radio frequency receiver — A tuned radio frequency receiver (TRF receiver) is a radio receiver that is usually composed of several tuned radio frequency amplifiers followed by circuits to detect and amplify the audio signal. A 3 stage TRF receiver includes a RF stage, a… …   Wikipedia

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