Journal ArticleDOI
Distortion analysis and reduction in a completely digital PWM class D power amplifier
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This article is published in International Journal of Modelling and Simulation.The article was published on 1994-01-01. It has received 11 citations till now. The article focuses on the topics: Linear amplifier & Direct-coupled amplifier.read more
Citations
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Proceedings ArticleDOI
A filter free class D audio amplifier with 86% power efficiency
TL;DR: This paper presents a single chip class D amplifier with 2.5 W output power and 86% efficiency with an 8 ohm load that uses a pulsed width modulation scheme that eliminates the output filter.
Proceedings ArticleDOI
Study of hybrid active control strategies for the Bus-Pumping cancellation in the Half-Bridge Class-D audio power amplifiers
TL;DR: In this paper, the active control is presented as an effective method for compensate the amplitude distortions in D-Class Half-Bridge amplifiers and three different methods to estimate the perturbation.
Proceedings ArticleDOI
Class D Audio Amplifier Design Theory and Design Implementation for Portable Applications
TL;DR: This paper presents a single chip class D amplifier with two selectable gains 6 dB & 9 dB, 1.4 W output power and 86% efficiency with an 8 ohm load, which uses a frequencies trim-able ramp generator and reduces the inter-modulation in case of mixing of Audio and Voice.
Audio Power Amplifier Solutions for New Wireless Phones
Salah-ddine Krit,Hassan Qjidaa +1 more
TL;DR: A single chip class D amplifier with two selectable gains 6dB & 9dB, 1.4 W output power and 86% efficiency with an 8 ohm load, uses a frequencies trimable ramp generator and reduces the intermodulation in case of mixing of Audio and Voice.
Proceedings ArticleDOI
Feed-Back Active Control for Half-Bridge Class-D audio amplifiers
TL;DR: In this paper, a feed-back active control (FBAC) is implemented to avoid the distortion generated due to mid point voltage variations on DC-bus of class-D half bridge audio amplifiers.
References
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Journal ArticleDOI
Reduction of spectral distortion in class D amplifiers by an enhanced pulse width modulation sampling process
TL;DR: In this article, an enhanced sampling process was proposed to reduce spectral distortion in the output of digital pulse width modulated class D amplifiers, which can be adjusted such that the spectra produced by the process can take a number of forms for the same signal.