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Разработка и исследование сигма-дельта модулятора с Ð´Ð²ÑƒÑ Ñ„Ð°Ð·Ð½Ð¾Ð¹ выборкой и прямой связью

выпускная квалификационная работа магистра

Разработка и исследование сигма-дельта модулятора с Ð´Ð²ÑƒÑ Ñ„Ð°Ð·Ð½Ð¾Ð¹ выборкой и прямой связью

Abstract

Тема выпускной квалификационной работы: «Разработка и исследование ΣΔ модулятора с двухфазной выборкой и прямой связью». Данная работа посвящена применению метода двухфазной выборки в ΣΔ модуляторе. Целью данной дипломной работы служит изучение работы ΣΔ модулятора, а также рассмотрение различных реализаций метода двухфазной выборки и способов улучшения их параметров. В ходе работы рассматриваются блоки, необходимые для построения ΣΔ модулятора. Приведены структуры ΣΔ модулятора первого и второго порядка, а также представлены результаты моделирования во временной и частотной области в ПО Cadence Virtuoso с использованием параметров 180 нм КМОП технологии. Рассмотрена работа структур ΣΔ модулятора второго порядка с применением метода двухфазной выборки, ΣΔ модулятора с применением метода двухфазной выборки плавающей точкой. Изучено влияние различных модификаций структур с применением метода двухфазной выборки на SNDR модулятора. Отдельно рассмотрена структура ΣΔ модулятора с применением метода двухфазной выборки с комбинированной связью.

The theme of the final qualification work: "Development and research of a feed-forward sigma-delta modulator with double sampling". This work is devoted to the application of the double sampling method in a ΣΔ modulator. The purpose of this work is to study the operation of ΣΔ modulator, and also to consider various implementations of the double sampling method and ways to improve their parameters. In the course of the work, we consider simple structures necessary for constructing a ΣΔ modulator. The structures of the ΣΔ modulator of the first and second order are given in this work, and the simulation results in the time and frequency domain are also presented. In Cadence Virtuoso software with using 180 nm CMOS technology. We consider the functioning of the ΣΔ second-order modulators structure using the double sampling technique. We study the effect of various modifications of structures using the double sampling technique on the signal-to-noise ratio of the signal at the output of the modulator. The structure of the feedforward double sampling ΣΔ modulator is considered separately.

Keywords

Модуляторы, Ð´Ð²ÑƒÑ Ñ„Ð°Ð·Ð½Ð°Ñ выборка, sigma-delta, сигма-дельта, double sampling

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citations
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
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