Field effect transistor amplifier with variable gain control

Details Field effect transistor amplifier with variable gain control Field effect transistor amplifier with variable gain control

1980-08-29

1982-10-05

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330277, 330285, 330123, H03F 330, H03G 330

Patent

active

043530362

ABSTRACT:
A complementary symmetry amplifier having variable gain control is used in an automatic gain control (AGC) system. The amplifier includes first and second field effect transistors of opposite conductivity type. Variable gain control is achieved by applying first and second differential control signals to respective gate electrodes of said first and second field effect transistors.

REFERENCES:
patent: 3260948 (1966-07-01), Theriault
patent: 3543175 (1970-11-01), Prout et al.
patent: 3887881 (1975-06-01), Hoffmann
patent: 4038607 (1977-07-01), Schade, Jr.
patent: 4092612 (1978-05-01), Schade, Jr.

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