混频器、振荡器、采样器和逻辑中的噪声——循环平稳噪声的介绍

J. Phillips, K. Kundert
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引用次数: 114

摘要

无线和移动产品的激增极大地增加了正在设计的低功耗、高性能电子系统的数量和种类。在这些系统中,噪声是一个重要的限制因素。产生的噪声通常是周期平稳的。使用SPICE无法预测这种类型的噪声,传统的测试设备(如频谱分析仪或噪声系数计)也无法很好地处理这种噪声,但新的RF模拟器可以提供这种噪声。循环平稳噪声的起源和特征描述的方式,使设计人员了解循环平稳对他们的电路的影响。特别是,周期平稳噪声时变系统(混频器),采样系统(开关滤波器和采样/保持器),阈值系统(逻辑电路),和自主系统(振荡器)的讨论。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Noise in mixers, oscillators, samplers, and logic an introduction to cyclostationary noise
The proliferation of wireless and mobile products has dramatically increased the number and variety of low power, high performance electronic systems being designed. Noise is an important limiting factor in these systems. The noise generated is often cyclostationary. This type of noise cannot be predicted using SPICE, nor is it well handled by traditional test equipment such as spectrum analyzers or noise figure meters, but it is available from the new RF simulators. The origins and characteristics of cyclostationary noise are described in a way that allows designers to understand the impact of cyclostationarity on their circuits. In particular, cyclostationary noise in time-varying systems (mixers), sampling systems (switched filters and sample/holds), thresholding systems (logic circuitry), and autonomous systems (oscillators) is discussed.
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