Bipolar transistor RF power amplifier

Details Bipolar transistor RF power amplifier Bipolar transistor RF power amplifier

1985-07-16

1986-12-23

LaRoche, Eugene R.

Amplifiers

Hum or noise or distortion bucking introduced into signal...

330129, 330279, 328155, 328175, H03F 130, H03F 324

Patent

active

046314911

ABSTRACT:
A bipolar transistor R.F. power amplifier in which feedback is used to control simultaneously amplitude and phase distortion. The power amplifier is operated by determining a set of collector supply voltages located at the onset of gain saturation in the bipolar transistor and using feedback to adjust the collector supply voltage in response to variation in input drive level to operate the bipolar transistor in a mode where gain, phase shift and input impedance are simultaneously linearized, found at the onset of gain saturation.

REFERENCES:
patent: 3668533 (1972-06-01), Fish et al.
patent: 3900823 (1975-08-01), Sokal et al.
patent: 4547746 (1985-10-01), Erickson et al.

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