Automatic gain control of a single gate GaAs FET amplifier

Details Automatic gain control of a single gate GaAs FET amplifier Automatic gain control of a single gate GaAs FET amplifier

1982-04-08

1984-03-06

Ng, Jin F.

Telecommunications

Receiver or analog modulated signal frequency converter

Local control of receiver operation

455343, 330129, 330277, 330279, 330297, H04B 116, H03G 320

Patent

active

044358466

ABSTRACT:
RF preamplification with AGC is employed because of the wide range of signal levels to which the RF input section of a radio is subjected. A reduction in noise figure is obtained by using a single gate gallium arsenide field effect transistor (GaAs FET) as the RF preamplifier and providing an AGC control signal to vary the gain of the RF preamplifier so that the subsequent circuits are not overloaded when high RF signal levels appear at the input.

REFERENCES:
patent: 4066977 (1978-01-01), Chambers
patent: 4178482 (1979-12-01), Ouellette
patent: 4229707 (1980-10-01), Suganuma
patent: 4366450 (1982-12-01), Suganuma

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