Power amplifying circuit with supply adjust to control adjacent

Details Power amplifying circuit with supply adjust to control adjacent Power amplifying circuit with supply adjust to control adjacent

1999-07-22

2000-12-26

Shingleton, Michael B

Amplifiers

With control of power supply or bias voltage

455126, 375297, H03G 320, H01Q 1112, H04K 102, H04L 2503

Patent

active

061665983

ABSTRACT:
A power amplifying circuit with supply adjust for control of adjacent and alternate channel power. A power amplifier amplifies an input signal to produce an amplified signal. A peak-to-average detector detects peak levels of the amplified signal and an average level of the amplified signal and produces an indication of the peak levels and the average level. A controller adjusts a supply voltage to the power amplifier responsive to the indication to cause the supply voltage to lower as a difference between the peak levels and the average level increases above a predetermined level and to cause the supply voltage to elevate as the difference decreases below the predetermined level.

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