Title :
System analysis of an optimal noise shaped quantizer for audio-band digital amplifier
Author :
Jwusheng, Hu ; Kengyuan, Chen
Author_Institution :
Dept. of Electr. & Control Eng., Nat. Chiao Tung Univ., Hsinchu
Abstract :
This paper reports a novel application of receding finite horizon constrained optimization techniques to design an audio-band full digital amplifier. The digital amplifier using power MOSFET requires a modulator to modulate the reference signal into binary sequences. The modulator can be viewed as an over-sampled quantizer with noise-shaping requirement. The quantization scheme resulting from the optimization is derived in detail to arrive at the stability condition under zero initial conditions. Simulations as well as experimental results are given to illustrate the effectiveness of the design methodology.
Keywords :
MOSFET; audio-frequency amplifiers; binary sequences; optimisation; audio-band digital amplifier; binary sequences; optimal noise shaped quantizer; power MOSFET; receding finite horizon constrained optimization techniques; system analysis; Binary sequences; Constraint optimization; Design optimization; Digital modulation; MOSFET circuits; Noise shaping; Power MOSFET; Power amplifiers; Quantization; Stability; Amplifiers; Digital filter structures; Modulation; Quantization noise; Quantizers; Receding horizon quadratic optimal control;
Conference_Titel :
Control Conference, 2008. CCC 2008. 27th Chinese
Conference_Location :
Kunming
Print_ISBN :
978-7-900719-70-6
Electronic_ISBN :
978-7-900719-70-6
DOI :
10.1109/CHICC.2008.4605687
