Amplifier circuit

Details Amplifier circuit Amplifier circuit

2007-03-27

2007-03-27

Nguyen, Linh V. (Department: 2819)

Amplifiers

With semiconductor amplifying device

Including particular biasing arrangement

C330S297000

Reexamination Certificate

active

10432802

ABSTRACT:
An amplifier circuit11comprises an amplifier12, an indicator of desired power15, a power control circuit14and a power measuring circuit13. The amplifier12amplifies an input signal to produce an output signal, and has an input for controlling a supply current I and an input for receiving a supply voltage V and supply current I, for driving the amplifier. The power control circuit calculates and applies values of both a supply voltage V and a supply current I, according to any one of a plurality of desired power levels, in order to operate the amplifier with maximum efficiency over a wide range of power levels. The power control circuit may further comprise a power control loop whereby adjustment of the output power can also be effected according to a measurement of output power and a desired level of output power.

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