TERMIUM Plus®

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INTERMEDIATE FREQUENCY AMPLIFIER [1 record]

Record 1 1999-11-03

English

Subject field(s)
  • Amplifiers (Electronics)
  • Radio Transmission and Reception
DEF

A tuned amplifier employed in the amplification of the signals produced by the mixer in a radio receiver. Because the carrier frequency of the modulated signal from the mixer is essentially constant, the resonant frequency of the amplifier is fixed.

CONT

Intermediate-frequency (i-f) amplifiers. These are used in radio, radar, and television receivers. The majority of broadcast radio receivers employ i-f amplifiers operating at 445 kHz; some automobile receivers use 262 kHz.

OBS

IF: abbreviation ... often not capitalized ....

French

Domaine(s)
  • Amplificateurs (Électronique)
  • Émission et réception radio
CONT

La liaison entre le sélecteur U.H.F. et le mélangeur V.H.F., qui est utilisé comme premier amplificateur à fréquence intermédiaire, réduit la bande de fréquences transmise, car les écarts entre les porteuses son et vision sont plus faibles que pour les émissions en bandes I et III.

CONT

Dans la plupart des récepteurs, l'amplificateur F.I. comporte trois étages, chacun d'eux étant accordé sur la fréquence intermédiaire [...] Cet ensemble permet de sélectionner le spectre de fréquences [...] qui correspond aux signaux à détecter.

Spanish

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