1位多步前瞻ΣΔ调制器及其应用

2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST) Pub Date : 2017-05-01 DOI:10.1109/MOCAST.2017.7937677

Charis Basetas, P. Sotiriadis

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引用次数: 0

摘要

介绍了一类1位多步预瞄(MSLA) ΣΔ调制器。它们考虑了当前和未来的量化误差，改进了传统1位ΣΔ调制器的稳定性和噪声整形特性。发现MSLA调制器系统相当于多个共享多输入1位量化器的并行传统ΣΔ调制器。预检步骤的数量以及其他设计参数可以根据应用程序对性能和硬件复杂性进行微调。研究了不同设计参数值下MSLA调制器的性能，突出了它们在数字发射机、d类功率放大器和dac等众多应用中的优势。

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The class of 1-bit Multi-Step Look-Ahead ΣΔ modulators and their applications

The class of 1-bit Multi-Step Look-Ahead (MSLA) ΣΔ modulators is presented. They take into account current and future quantization errors improving upon the stability and noise shaping characteristics of conventional 1-bit ΣΔ modulators. The MSLA modulator system is found to be equivalent to a number of parallel conventional ΣΔ modulators sharing a multi-input 1-bit quantizer. The number of look-ahead steps along with other design parameters enable fine-tuning of performance vs. hardware complexity according to the application. The performance of MSLA modulators for various design parameter values is investigated, highlighting their advantages in a multitude of applications like digital transmitters, class-D power amplifiers and DACs.

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2017 6th International Conference on Modern Circuits and Systems Technologies (MOCAST)

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