PWM digital amplifier with high-order loop filter

Details PWM digital amplifier with high-order loop filter PWM digital amplifier with high-order loop filter

2008-03-18

2008-03-18

Nguyen, Khanh Van (Department: 2817)

Amplifiers

Modulator-demodulator-type amplifier

C330S20700P, C330S251000

Reexamination Certificate

active

07345532

ABSTRACT:
An improved PWM amplifier is disclosed that uses multiple integrators in the loop filter to provide high loop gain across the frequency band-of-interest. The frequency characteristics of the loop filter are optimized to distribute large loop gains across the entire band to provide large suppression of noise and distortions generated in the modulation and output stages.

REFERENCES:
patent: 6300825 (2001-10-01), Dijkmans et al.
patent: 6362683 (2002-03-01), Miao et al.
patent: 6577186 (2003-06-01), Berkhout

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