Quiescent biasing of r-f power transistors for other than class

Details Quiescent biasing of r-f power transistors for other than class Quiescent biasing of r-f power transistors for other than class

1977-11-21

1978-08-08

Mullins, James B.

Amplifiers

With semiconductor amplifying device

Including d.c. feedback bias control for stabilization

330295, 330296, 330306, H03F 319

Patent

active

041059441

ABSTRACT:
Current feedback is used to adjust the quiescent emitter current of an r-f amplifier transistor to prescribed idling or stand-by value, to avoid undesirable quiescent base-input-impedance conditions, but is disabled upon application of r-f drive to the base electrode of the r-f transistor so that operation which is other than Class A is not interfered with.

REFERENCES:
patent: 3327238 (1967-06-01), Harwood
patent: 3984783 (1976-10-01), Bickley

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