ITR: CAD Algorithms for Unified Prediction of Oscillator Mixing and Phase Noise

ITR：统一预测振荡器混频和相位噪声的 CAD 算法

• 批准号: 0312079
• 负责人: Jaijeet Roychowdhury
• 金额: --
• 依托单位: University of Minnesota-Twin Cities
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2003
• 资助国家: 美国
• 起止时间: 2003-09-01 至 2009-08-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=0312079&HistoricalAwards=false
• 关键词: ITR; CAD; Algorithms; Unified; Prediction

The term oscillator is broadly used for any physical system that can generate and sustain repetitive motions through its own fundamental mechanisms. For example, clocks, hearts, combustion engines, and lasers are all oscillators. Oscillators are fundamental building blocks in electronics, producing the clock signals and repetitive waveforms essential for the operation of virtually all computer, radio and communication circuits. In spite of the ubiquity of and longstanding scientific interest in oscillators, certain aspects of their operation, such as their response to small external influences or noise, have remainedpoorly understood to date. Noise makes an oscillator's repetition period drift in a random fashion this is often referred to as phase noise or jitter. The accuracy of clocks, or the purity of radio signals carrying voice or high-speed data, is fundamentally limited by oscillator noise. Being able to predict oscillator noise correctly is, therefore, not only of considerable scientific value, but also of great practical interest, for it can be used to build oscillators that are less sensitive to noise.This research will provide a rigorous mathematical understanding of oscillator noise mechanisms, and apply this understanding to develop computational tools for quantitative noise/jitter prediction. In addition to solving an important scientific problem that has long been open, this research will be directly useful as a module for computer-aided circuit design tools, such as the well-known program SPICE. Although the principal immediate benefit of this research will be in the design of electronic circuits, the techniques developed will be applicable to any kind of oscillator, including mechanical, biological, chemical and optical ones. Hence we expect this research to have broad long-term impact in a variety ofscientific disciplines. A strong educational component is an integral part of this work, with an explicit goal being to disseminate results in as readable and easily understandable a form as possible. To further increase impact, the computational methods developed in this research project will be prototyped and made publicly available as open source.

振荡器一词广泛用于任何可以通过其自身的基本机制来产生和维持重复运动的物理系统。例如，时钟，心脏，燃烧引擎和激光都是振荡器。振荡器是电子设备中的基本构建块，生成时钟信号和重复的波形对于几乎所有计算机，无线电和通信电路的运行至关重要。尽管对振荡器的科学兴趣和长期科学兴趣的无处不在，但其操作的某些方面（例如它们对小型外部影响或噪音的反应）一直在迄今为止都被众所周知。噪声使振荡器的重复期以随机的方式漂移，通常称为相位噪声或抖动。振荡器噪声从根本上限制了时钟的准确性或带有语音或高速数据的无线电信号的纯度。因此，能够正确预测振荡器的噪声不仅具有相当大的科学价值，而且具有极大的实际兴趣，因为它可以用于构建对噪声不太敏感的振荡器。这项研究将为振荡器噪声机制提供严格的数学理解，并应用这种理解来为定量噪声/jitter jittertical jistion/jitter jittertical jistion/jitter jittertical nigtitation filetitical predittical predittical提供。除了解决长期以来已经打开的重要科学问题外，这项研究还将直接用作计算机辅助电路设计工具的模块，例如著名的程序香料。尽管这项研究的主要直接好处将是电子电路的设计，但开发的技术将适用于任何类型的振荡器，包括机械，生物学，化学和光学的振荡器。因此，我们预计这项研究将对各种科学学科产生广泛的长期影响。强大的教育组成部分是这项工作不可或缺的一部分，明确的目标是将结果传播到尽可能易读且易于理解的形式。为了进一步增加影响，该研究项目中开发的计算方法将是原型的，并作为开源。