Amplifier circuit, transmission device, amplification...

Details Amplifier circuit, transmission device, amplification... Amplifier circuit, transmission device, amplification...

2005-07-12

2005-07-12

Mottola, Steven J. (Department: 2817)

Amplifiers

Modulator-demodulator-type amplifier

Reexamination Certificate

active

06917241

ABSTRACT:
An amplifier circuit has: a delta-sigma modulator which delta-sigma modulates a signal; and an amplifier which is connected to an output of the delta-sigma modulator. In the amplifier circuit, an output voltage of the delta-sigma modulator is controlled in accordance with an output power of the amplifier. When the output power of the amplifier is reduced, the output voltage of the delta-sigma modulator is lowered.

REFERENCES:
patent: 6373334 (2002-04-01), Melanson
patent: 6518838 (2003-02-01), Risbo
patent: 6765436 (2004-07-01), Melanson et al.
patent: 2002-325109 (2002-11-01), None

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