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Transfer function design of stable high-order sigma-delta modulators with root locus inside unit circle

机译:单位圆内具有根轨迹的稳定高阶sigma-delta调制器的传递函数设计

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In this paper, a systematic method to design stable high-order sigma-delta modulator (SDM) transfer functions, with no need of stability mechanisms, is proposed. It is shown that a high-order SDM can be absolutely stable if the departure angles of the root locus of its noise-shaping function are properly designed. Tradeoffs between stability and performance of the SDMs are presented.
机译:本文提出了一种无需稳定机制即可设计稳定的高阶sigma-delta调制器(SDM)传递函数的系统方法。结果表明,如果适当设计其噪声整形功能的根轨迹的偏离角,则高阶SDM可以绝对稳定。提出了SDM的稳定性和性能之间的权衡。

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