Variable gain amplifier

Details Variable gain amplifier Variable gain amplifier

1989-06-29

1991-06-11

Mottola, Steven

Amplifiers

With semiconductor amplifying device

Including gain control means

330302, H03G 310

Patent

active

050235699

ABSTRACT:
An amplification device (18) has its gain controlled by varying the current flowing into the amplification device. The current is varied (36) by a means of a variable bias network that adapts the input current in response to a control signal. In this way, the amplification device is provided with variable gain while avoiding parametric regeneration.

REFERENCES:
patent: 3714601 (1973-01-01), Minton et al.
patent: 4019160 (1977-04-01), Kan
patent: 4037167 (1977-07-01), Hastings
patent: 4243947 (1981-01-01), Glennon
patent: 4498056 (1985-02-01), Kwitkowski et al.

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