Modular radio frequency amplifier having a gain variable by exte

Details Modular radio frequency amplifier having a gain variable by exte Modular radio frequency amplifier having a gain variable by exte

1977-02-14

1978-09-05

Dahl, Lawrence J.

Amplifiers

With semiconductor amplifying device

Including push-pull amplifier

330 81, 330262, 330276, 330302, 330307, 330311, H03F 326

Patent

active

041123867

ABSTRACT:
A broad-band radio-frequency amplifier is characterized by a gain which may be adjusted over a relatively large range, and which remains stable over the range of gain adjustments. The amplifier includes first and second transistor pairs each arranged in a cascode connection; a feedback capacitor connected across the output and input of each cascode pair; and inductance serially included at selected circuit points. Also disclosed is a hybrid circuit for efficiently implementing the amplifier.

REFERENCES:
patent: 2812390 (1957-11-01), Van Overbeek
patent: 3344283 (1967-09-01), Stubbs
patent: 3641452 (1972-02-01), Steed
patent: 3683289 (1972-08-01), Rogers
patent: 3895306 (1975-07-01), Rebeles
patent: 3949306 (1976-04-01), Watanabe et al.
"Basic Processes"--Motorola Monitor, pp. 8-16, vol. 2, No. 4, 6/1964.

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