Sigma-delta modulator with feedback for power amplifiers

Details Sigma-delta modulator with feedback for power amplifiers Sigma-delta modulator with feedback for power amplifiers

2007-11-19

2009-12-08

Choe, Henry K (Department: 2817)

Amplifiers

Modulator-demodulator-type amplifier

C330S251000

Reexamination Certificate

active

07629841

ABSTRACT:
The invention concerns an electronic circuit comprising a sigma-delta modulator and a power amplifier connected downstream thereof, wherein there is provided a feedback circuit (207) which is coupled between an output of the sigma-delta modulator and an input of the sigma-delta modulator and which includes an emulation of the signal path between the output of the sigma-delta modulator and the output of a power amplifier (107) connected downstream of said sigma-delta modulator.

REFERENCES:
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patent: WO 2006/061213 (2006-06-01), None
Jack R. Smith: Modern Communication Circuits, Second edition, McGraw-Hill 1998; Chapter 11.

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