可调谐连续时间正交带通δ - σ调制器的设计

2011 IEEE 6th International Design and Test Workshop (IDT) Pub Date : 2011-12-01 DOI:10.1109/IDT.2011.6123110

Khaled Sakr, M. Dessouky, A. Zekry

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引用次数: 1

摘要

本文提出了一种可调谐连续时间正交带通δ - σ调制器的系统设计技术。调制器的调谐范围为采样频率的0.05 ~ 0.45。将设计方法应用于二阶调制器的设计。结果表明，由于采用了数模转换器(DAC)补偿方案，在整个调谐范围内信噪比(SNR)几乎是恒定的，并且没有出现稳定性问题。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Design of tunable continuous-time quadrature bandpass delta-sigma modulators

This paper presents a systematic design technique for a tunable continuous-time quadrature bandpass delta-sigma modulator. The tuning range of the modulator covers from 0.05 to 0.45 of the sampling frequency. The design procedure is applied to the design of a second-order modulator. Results show that the Signal-to-Noise Ratio (SNR) is almost constant and no stability problem occurs over the whole tuning range thanks to a Digital-to-Analog Converter (DAC) compensation scheme.

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2011 IEEE 6th International Design and Test Workshop (IDT)

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