Multi-Harmonic EMI Reduction Optimization of Spread Spectrum in Multiple-RBW Environment

IF 5.2 1区工程技术 Q1 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Transactions on Circuits and Systems I: Regular Papers Pub Date : 2025-03-18 DOI:10.1109/TCSI.2025.3549360

Francesco Gabriele;Fabio Pareschi;Davide Lena;Maria Rosa Borghi;Riccardo Rovatti;Gianluca Setti

{"title":"Multi-Harmonic EMI Reduction Optimization of Spread Spectrum in Multiple-RBW Environment","authors":"Francesco Gabriele;Fabio Pareschi;Davide Lena;Maria Rosa Borghi;Riccardo Rovatti;Gianluca Setti","doi":"10.1109/TCSI.2025.3549360","DOIUrl":null,"url":null,"abstract":"We investigate here both from a theoretical and practical point of view the problem of optimizing EMI reduction by means of spread spectrum clocking when lower harmonics need to be analyzed with a smaller RBW, and higher harmonics with a larger one. This situation is indeed a trade-off, where a designer can trade performance in terms of EMI reduction for lower harmonics with that achieved for higher harmonics. Two approaches are considered and analyzed. The first trade-off, denoted as Single Triangular Modulation, consists in the standard and commonly adopted triangular based spreading, where the role of the parameters is investigated with the aim of optimizing EMI reduction both in the lower part and the upper part of the spectrum. The second one, denoted as Double Triangular Modulation, is inspired by a recent Application Note and it is much more complex from an implementation point of view, being based on two simultaneous triangular modulations with different parameters. The comparison shows very similar performance, so that the adoption of the more complex approach results questionable.","PeriodicalId":13039,"journal":{"name":"IEEE Transactions on Circuits and Systems I: Regular Papers","volume":"72 7","pages":"3488-3497"},"PeriodicalIF":5.2000,"publicationDate":"2025-03-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"IEEE Transactions on Circuits and Systems I: Regular Papers","FirstCategoryId":"5","ListUrlMain":"https://ieeexplore.ieee.org/document/10931123/","RegionNum":1,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ENGINEERING, ELECTRICAL & ELECTRONIC","Score":null,"Total":0}

引用次数: 0

Abstract

We investigate here both from a theoretical and practical point of view the problem of optimizing EMI reduction by means of spread spectrum clocking when lower harmonics need to be analyzed with a smaller RBW, and higher harmonics with a larger one. This situation is indeed a trade-off, where a designer can trade performance in terms of EMI reduction for lower harmonics with that achieved for higher harmonics. Two approaches are considered and analyzed. The first trade-off, denoted as Single Triangular Modulation, consists in the standard and commonly adopted triangular based spreading, where the role of the parameters is investigated with the aim of optimizing EMI reduction both in the lower part and the upper part of the spectrum. The second one, denoted as Double Triangular Modulation, is inspired by a recent Application Note and it is much more complex from an implementation point of view, being based on two simultaneous triangular modulations with different parameters. The comparison shows very similar performance, so that the adoption of the more complex approach results questionable.

查看原文本刊更多论文

多rbw环境下扩频多谐波EMI抑制优化

本文从理论和实践两方面研究了在低次谐波需要用较小的RBW分析，高次谐波需要用较大的RBW分析的情况下，利用扩频时钟优化减少电磁干扰的问题。这种情况确实是一种权衡，在这种情况下，设计师可以在降低低谐波的EMI性能与实现高谐波的性能之间进行交易。本文考虑并分析了两种方法。第一个权衡，被称为单三角调制，包括标准和常用的基于三角形的扩频，其中研究参数的作用，目的是在频谱的下半部分和上半部分优化EMI降低。第二种，称为双三角调制，灵感来自最近的一份应用笔记，从实现的角度来看，它要复杂得多，它基于两个同时具有不同参数的三角调制。比较显示非常相似的性能，因此采用更复杂的方法结果值得怀疑。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

IEEE Transactions on Circuits and Systems I: Regular Papers 工程技术-工程：电子与电气

CiteScore

9.80

自引率

11.80%

发文量

441

审稿时长

2 months

期刊介绍： TCAS I publishes regular papers in the field specified by the theory, analysis, design, and practical implementations of circuits, and the application of circuit techniques to systems and to signal processing. Included is the whole spectrum from basic scientific theory to industrial applications. The field of interest covered includes: - Circuits: Analog, Digital and Mixed Signal Circuits and Systems - Nonlinear Circuits and Systems, Integrated Sensors, MEMS and Systems on Chip, Nanoscale Circuits and Systems, Optoelectronic - Circuits and Systems, Power Electronics and Systems - Software for Analog-and-Logic Circuits and Systems - Control aspects of Circuits and Systems.