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2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)最新文献

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Measurement Investigation on Acoustic Noise Caused by “Singing” Capacitors on Mobile Devices 移动设备上电容“唱歌”噪声的测量研究
2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI) Pub Date : 2019-07-01 DOI: 10.1109/ISEMC.2019.8825220
Yin Sun, Jianmin Zhang, Zhiping Yang, C. Hwang, Songping Wu
{"title":"Measurement Investigation on Acoustic Noise Caused by “Singing” Capacitors on Mobile Devices","authors":"Yin Sun, Jianmin Zhang, Zhiping Yang, C. Hwang, Songping Wu","doi":"10.1109/ISEMC.2019.8825220","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825220","url":null,"abstract":"Acoustic noise from mobile devices can be annoying for customers. Multilayer ceramic capacitors (MLCCs) soldered on printed circuit board (PCB) are known to be a main source of acoustic noise. The PCB in these devices feature hundreds of MLCCs. In this paper, a measurement methodology to identify the major vibrating MLCCs on board is presented. Laser Doppler vibrometer scanning result is used to find the dominant MLCC source. The correlation between board vibration and acoustic noise is confirmed with microphone probe. As a result of the piezoelectric properties of MLCCs, the root cause of the vibration is analyzed from an electric point of view. The problematic MLCCs are find to share the same power line which renders the same noise peaks as in the vibration and sound pressure measurements. After replacing the vibrating MLCCs with low acoustic noise MLCCs, the board clearly shows decreased level of vibration.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128354585","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
Configurable Reference RF Source and its Radiated Emission Model for Site Correlation 可配置参考射频源及其场地相关辐射发射模型
2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI) Pub Date : 2019-07-01 DOI: 10.1109/ISEMC.2019.8825203
Haihui Lu, Michael J. Cibulka, Cameron E. Jones, Brian R. Campbell, A. Adepetun, Michael J. Mendala, Lawrence K. Schillig, Brett C. Klemann
{"title":"Configurable Reference RF Source and its Radiated Emission Model for Site Correlation","authors":"Haihui Lu, Michael J. Cibulka, Cameron E. Jones, Brian R. Campbell, A. Adepetun, Michael J. Mendala, Lawrence K. Schillig, Brett C. Klemann","doi":"10.1109/ISEMC.2019.8825203","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825203","url":null,"abstract":"This paper presents a configurable radio frequency reference noise source and its radiated emission (RE) simulation model. This noise source is representative of actual PLC and IO products with a High Speed Gigabit backplane. It is designed to produce a reference noise signature from 30 MHz to 6GHz with radiated emission levels close to the class A electromagnetic radiation disturbance limits of CISPR 11 and CISPR 22. A radiated emission model of this noise source was established to investigate design factors. Multiple emissions scans were performed in two separate semi-anechoic chambers located in different facilities in order to test the repeatability of this noise source. Measurement results indicated that the noise source has very good repeatability and that it can serve as a reference noise source. The results were also used to evaluate the maturity of the simulation technology, as well as, to quantify the difference between chambers.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131243999","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Hybrid Algorithms for Denoising Electrical Waveforms Containing Steady Segments 含稳定段波形去噪的混合算法
2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI) Pub Date : 2019-07-01 DOI: 10.1109/ISEMC.2019.8825311
I. Nicolae, P. Nicolae
{"title":"Hybrid Algorithms for Denoising Electrical Waveforms Containing Steady Segments","authors":"I. Nicolae, P. Nicolae","doi":"10.1109/ISEMC.2019.8825311","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825311","url":null,"abstract":"The paper deals with an original hybrid denoising algorithm applicable to waveforms containing steady segments, polluted by white noise. The algorithm relies on 2 denoising techniques. Firstly the “average signal method” is used to get an estimation of the noise power. An average signal (AS) is computed across 4 consecutive periods of the polluted signal (SP). A “per period” evaluation of the noise (NP) is then performed by subtracting AS from each period of SP. Each NP is divided into 6 equal subintervals, getting sets of 6 estimated noise signals (NS) for each period. The values of standard deviation (SD) are computed considering the absolute values of local peaks for all NS-s. 3 metrics were used to evaluate the power of estimated noises: NS’s power (PNS), SD and the average value of NS (ANS). The minimum value (P) of PNS across all subintervals from a dataset (DS) represents the estimated power of the noise associated to DS. P is used in the 2-nd stage of the algorithm – denoising with a wavelet based thrashing tree (TT). The TT’s number of levels is determined considering the best match between the power of noises yielded by TT and P. The algorithm was additionally validated by proving that all the minimum values of PNS appear only for subintervals associated to almost minimum values of SD and almost zero values of ANS. The original hybrid algorithm yielded reliable results for all datasets.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126842013","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 2
Characterization of On-die Interconnects Exhibiting Slow-Wave Propagation 显示慢波传播的片上互连的特性
2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI) Pub Date : 2019-07-01 DOI: 10.1109/ISEMC.2019.8825232
Gerardo Romo L., Adán S. Sánchez, Vinit Sonawane, Scott Powers, T. Michalka, B. Nae, Y. Shadrokh, Jimmy Johansson, Peter Robinson
{"title":"Characterization of On-die Interconnects Exhibiting Slow-Wave Propagation","authors":"Gerardo Romo L., Adán S. Sánchez, Vinit Sonawane, Scott Powers, T. Michalka, B. Nae, Y. Shadrokh, Jimmy Johansson, Peter Robinson","doi":"10.1109/ISEMC.2019.8825232","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825232","url":null,"abstract":"This paper presents the characterization of on-die interconnects fabricated on SOI technology exhibiting slow-wave propagation. The characterization relies on building a frequency dependent transmission line model from two measured lines of different lengths. The measured S-parameters and TDR data are found to exhibit behaviors unlike those typically observed in PCB interconnects. The odd behaviors are due to the so-called slow-wave mode of propagation. This effect occurs below 1 GHz and manifests itself by very large losses in the stack-up and a low propagation velocity. The frequency dependent model and the measurements are found to correlate well in frequency and time-domains.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126890659","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Network model of shielded cables for radiated and conducted EMC analysis 电磁兼容分析用屏蔽电缆的网络模型
2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI) Pub Date : 2019-07-01 DOI: 10.1109/ISEMC.2019.8825208
M. Raya, R. Vick
{"title":"Network model of shielded cables for radiated and conducted EMC analysis","authors":"M. Raya, R. Vick","doi":"10.1109/ISEMC.2019.8825208","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825208","url":null,"abstract":"This paper presents a SPICE model for a shielded cable over a ground plane excited by an incident uniform plane wave. The model is applicable for radiated and conducted EMC analysis. It allows the bidirectional coupling between the inner and outer systems and can thus be integrated into simulations for immunity and emission analysis. The model was developed on the basis of classical transmission line theory. It consists of transmission lines, controlled sources and RLC circuits, so that it can be combined with non-linear elements. The results were compared with numerical simulations and showed a very good agreement.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114678844","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 3
Low-Frequency Magnetic Shielding 低频磁屏蔽
2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI) Pub Date : 2019-07-01 DOI: 10.1109/ISEMC.2019.8825190
R. Ashtari, David H. Jones
{"title":"Low-Frequency Magnetic Shielding","authors":"R. Ashtari, David H. Jones","doi":"10.1109/ISEMC.2019.8825190","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825190","url":null,"abstract":"For NASA’s Europa Clipper mission, the spacecraft is scheduled to orbit Jupiter for 3.5 years. Magnetic shielding for spacecraft electronics in this environment is challenging, mass is precious and Jupiter’s environmental magnetic fields threaten to saturate any magnetic materials on-board. Addressing these challenges, a multi-layered magnetic shield is presented.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"13 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122678176","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
Accurate Prediction and Mitigation of EMI from High-Speed Noise Sources using Full Wave Solver 利用全波解算器对高速噪声源的电磁干扰进行准确预测和抑制
2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI) Pub Date : 2019-07-01 DOI: 10.1109/ISEMC.2019.8825222
Qiaolei Huang, Deepak Pai, K. Rao, Akshay Mohan, Jaswanth N. Vutukury, Chien-Ming Nieh, J. Fan, Jagan Rajagopalan
{"title":"Accurate Prediction and Mitigation of EMI from High-Speed Noise Sources using Full Wave Solver","authors":"Qiaolei Huang, Deepak Pai, K. Rao, Akshay Mohan, Jaswanth N. Vutukury, Chien-Ming Nieh, J. Fan, Jagan Rajagopalan","doi":"10.1109/ISEMC.2019.8825222","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825222","url":null,"abstract":"Unintended Electromagnetic interference (EMI) is a common occurrence in all consumer electronics, which can often fail compliance margins of FCC and/or CE, when best practices of grounding, shielding and overall system integration are not followed. The measurement of EMI for regulatory compliance has been studied extensively and there are standard test labs which certifies for EMI. However, predicting the EMI radiation from a consumer electronic device through simulation is very challenging due to the complexities involved in modeling the device and noise source. This paper introduces a workflow for simulating one case of EMI radiation from a 208 MHz single-ended I/O clock generated from the System-on-Chip (SoC) in an electronic device. Through a full wave 3D solver, the radiated far field transfer function of the clock is obtained. Additionally, the spectral content of clock is measured in both time and frequency domain. Then the clock spectrum is combined with transfer function to predict EMI radiation envelope. The simulated results are then compared with the measured results from an FCC compliant laboratory. Based on the simulated and measured results, mitigation techniques are proposed to reduce the EMI to acceptable levels.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128982857","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 6
Bayesian Optimization for Stack-up Design 叠层设计的贝叶斯优化
2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI) Pub Date : 2019-07-01 DOI: 10.1109/ISEMC.2019.8825227
Z. Kiguradze, Jiayi He, B. Mutnury, A. Chada, J. Drewniak
{"title":"Bayesian Optimization for Stack-up Design","authors":"Z. Kiguradze, Jiayi He, B. Mutnury, A. Chada, J. Drewniak","doi":"10.1109/ISEMC.2019.8825227","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825227","url":null,"abstract":"Black-box function optimization is a challenging problem worldwide. Bayesian Optimization is a powerful method used to handle the optimization of functions, which are usually too costly for evaluation. Non-convex black-box function optimization arises in many applied problems. One example of such kind of problems is the PCB stack-up design. With its various covariance functions and different values of hyper-parameters Bayesian Optimization is applied for five-dimensional stack-up design optimization. The results obtained using the Bayesian Optimization are compared with results of other methods.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129196741","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 8
EMC Analysis of Shielded Twisted Pair and Shielded Parallel Pair Transmission Lines for Automotive Multi-Gig Ethernet 车用多千兆以太网屏蔽双绞线和屏蔽平行对传输线的电磁兼容分析
2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI) Pub Date : 2019-07-01 DOI: 10.1109/ISEMC.2019.8825261
Sanaz Mortazavi, D. Schleicher, Alexander Stieler, Ali Sinai, F. Gerfers, M. Hampe
{"title":"EMC Analysis of Shielded Twisted Pair and Shielded Parallel Pair Transmission Lines for Automotive Multi-Gig Ethernet","authors":"Sanaz Mortazavi, D. Schleicher, Alexander Stieler, Ali Sinai, F. Gerfers, M. Hampe","doi":"10.1109/ISEMC.2019.8825261","DOIUrl":"https://doi.org/10.1109/ISEMC.2019.8825261","url":null,"abstract":"In this work, the electromagnetic compatibility (EMC) of Shielded Twisted Pair (STP) and Shielded Parallel Pair (SPP) cables for automotive Multi-Gig networks is investigated. Such high-speed networks are essential requirements for the implementation of new technologies like autonomous driving. As the safety and reliability of the future vehicles are of primary importance, the functionality of the individual network components regarding their EMC characteristics should be studied carefully. Possible automotive ethernet cable options are presented in a first step. After describing the measurement setup, the frequency domain measurements of the cables mentioned above with different lengths are explained and compared using mixed-mode Sparameter measurements up to 8 GHz. The screening attenuation, coupling attenuation and the unbalanced attenuation of both cables are investigated and compared using triaxial measurement setup. Using a bit error rate tester the time domain characteristics of the cables for different gigabit data rates are compared. Finally, based on the measurement results, the application frequency range of each cable is discussed.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"7 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127792096","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 7
Spectrum Considerations for Satellites and Ramifications for RF Interference 卫星频谱的考虑和射频干扰的后果
2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI) Pub Date : 2019-07-01 DOI: 10.1109/isemc.2019.8825226
T. Fagan, David G. Lubar
{"title":"Spectrum Considerations for Satellites and Ramifications for RF Interference","authors":"T. Fagan, David G. Lubar","doi":"10.1109/isemc.2019.8825226","DOIUrl":"https://doi.org/10.1109/isemc.2019.8825226","url":null,"abstract":"Choosing the right frequencies is critical to proper operation of small satellites and essential to reducing RF interference.","PeriodicalId":137753,"journal":{"name":"2019 IEEE International Symposium on Electromagnetic Compatibility, Signal & Power Integrity (EMC+SIPI)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2019-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124497345","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}
引用次数: 0
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