Envelope modulated amplifier bias control and method

Details Envelope modulated amplifier bias control and method Envelope modulated amplifier bias control and method

1998-07-02

2000-02-15

Pascal, Robert

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

330298, H03F 304, H02H 720

Patent

active

060257547

ABSTRACT:
A RF amplifier and method wherein the bias current is varied dynamically as a function of the envelope of the RF modulation to increase the efficiency and improve the linearity of the amplifier. Alternatively, the supply voltage may be dynamically varied as a function of modulation envelope.

REFERENCES:
patent: 4466119 (1984-08-01), Peters et al.
patent: 5420536 (1995-05-01), Faulkner et al.
patent: 5789984 (1998-08-01), Davis et al.

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