Accession Number : AD0164279

Title :   Narrow Band Intermediate Frequency Amplifier.

Descriptive Note : Patent,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Burgess,Kenneth

Report Date : 15 JUN 1971

Pagination or Media Count : 5

Abstract : The patent describes a narrow band intermediate frequency (IF) amplifier having three stages coupled by double-tuned filters. Each stage includes a semiconductor amplifying element that is biased and loaded to give a slightly negative output resistance with a voltage protective diode in each stage. The protective diode in the last stage is a hot-carrier diode to provide low intermodulation distortion at high input signal levels between stages thereby producing output IF of narrow three decibels (db.) bandwidth for frequency modulation (FM) circuits.

Descriptors :   *Intermediate frequency amplifiers, *Patents, Narrowband, Transistor amplifiers, Coupling circuits, Electric filters, Electrical networks, Tuning devices

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE