The Delta-Sigma modulator (DSM) can get a better performance by increasing the quantizer's levels.But the multi-level DSM output cannot drive the switching amplifier directly due to the structural restrict of switching amplifier.By using the equalarea theory,a level-transform strategy is proposed and analyzed in this paper.With an appropriate level-transform scheme,the transformed DSM output obtains a much better SNR performance compared to the origin 2-level output.
陈剑斌, 周强, 谭笑, 赵志远. 基于2比特DSM的开关功放电平变换策略研究[J]. 电子学报, 2015, 43(7): 1413-1417.
CHEN Jian-bin, ZHOU Qiang, TAN Xiao, ZHAO Zhi-yuan. The Research of Level-Transform Strategy for Switching Amplifier Based on 2 Bit Delta-Sigma Modulator. Chinese Journal of Electronics, 2015, 43(7): 1413-1417.
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2015, Vol. 43 
