Power amplifying circuit capable of producing an output signal h

Details Power amplifying circuit capable of producing an output signal h Power amplifying circuit capable of producing an output signal h

1992-09-28

1994-04-12

Mullins, James B.

Amplifiers

With control of power supply or bias voltage

With control of input electrode or gain control electrode bias

330138, 330279, 455126, H03G 320

Patent

active

053029135

ABSTRACT:
For use in amplifying an input signal having an input electric power in response to an amplification control signal to produce an output signal having an amplified electric power and a desired waveform, a power amplifying circuit comprises a reference signal generator (22) for generating a reference signal with a predetermined waveform which defines the desired waveform. A multiplier (23) multiplies the reference signal and a power control signal produced by a power control signal generator (21) to produce a level control signal. A comparator (17) compares the level control signal and a detection signal produced by a detector (14) to produce an error signal. A driver (18) drives a power amplifier (11) based on the error signal.

REFERENCES:
patent: 4706262 (1987-11-01), Ohta
patent: 5095542 (1992-03-01), Suematsu et al.
patent: 5159283 (1992-10-01), Jensen
patent: 5193223 (1993-03-01), Walczak et al.

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