{"title":"Durations of Power Excursions in a Monostirred Reverberation Chamber","authors":"L. R. Arnaut","doi":"10.1109/EMCSI38923.2020.9191489","DOIUrl":"https://doi.org/10.1109/EMCSI38923.2020.9191489","url":null,"abstract":"A theoretical and experimental analysis of the probability distributions and statistics of level crossing excursions forthe power received inside a mode-stirred reverberation chamber is presented, under the assumption of a stationary mode-stirring process. Measurement results obtained across a wide range of stir speeds and excitation frequencies show good agreement with theoretical predictions for asymptotically high and low levels of exceedance in overmoded regime. Stir velocity and frequency characteristics of the fundamental second spectral moment of the stir process are determined empirically. The results are relevant to immunity, fading, and reliability testing in reverberation chambers.","PeriodicalId":189322,"journal":{"name":"2020 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"10 8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125930688","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}
Johan Dijkstra, Tom Hartman, N. Moonen, F. Leferink
{"title":"An AC Controlled-Current Load for Controllable Waveform Parameters to Quantify Static Energy Meter Errors","authors":"Johan Dijkstra, Tom Hartman, N. Moonen, F. Leferink","doi":"10.1109/EMCSI38923.2020.9191617","DOIUrl":"https://doi.org/10.1109/EMCSI38923.2020.9191617","url":null,"abstract":"This paper proposes a method for quantifying static energy meter errors using current waveform parameters. This will be realized via a controlled-current load, for which the design is given. Several parameters like the rise time, current slope, crest factor and phase firing angle are considered to identify relations which cause static energy meter measurement errors. Some of these parameters are also used as a way to verify the functionality of the controlled-current load in a quantitative manner. This is realized by comparing these parameters for the original and reproduced current waveform, where a feedback capacitor is used to optimize the system tailored to which parameter is deemed most crucial.","PeriodicalId":189322,"journal":{"name":"2020 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122100885","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}
D. Kim, Seungyoung Ahn, Qiusen He, Anfeng Huang, J. Fan, Hongseok Kim
{"title":"Electric Parameter Tuning of Wireless Power Transfer Coil for Charging Interoperability of Electric Vehicles","authors":"D. Kim, Seungyoung Ahn, Qiusen He, Anfeng Huang, J. Fan, Hongseok Kim","doi":"10.1109/EMCSI38923.2020.9191578","DOIUrl":"https://doi.org/10.1109/EMCSI38923.2020.9191578","url":null,"abstract":"The SAE J2954 recommended practice (RP) contains the power transfer frequency, electric values, and test procedure for the electric vehicle (EV) wireless power transfer (WPT). In particular, this document expresses the inductance range of the powering coil, the power receiving coil and the coupling coefficient (k) and the impedance values. It is very important that adhering the electrical parameters in the standard considering that the wireless charging system's compatibility. However, once the coil is processed, it is not easy to adjust the inductance of each powering coil, power receiving coil as well as the coupling coefficient of between transmitting coil and receiving coil. In this article, we introduce the method of tuning the coil's inductances and coupling coefficient by adjusting the effective permeability of the ferrite blocks. By controlling the permeability of ferrite blocks, self-inductance of coils and coupling coefficient are successfully adjusted. Through this idea, we obtained reasonable electrical parameters; inductance of ground-assembly coil, inductance of vehicle-assembly coil, and coupling coefficient.","PeriodicalId":189322,"journal":{"name":"2020 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"29 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116718147","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}
{"title":"Analysis of the Distributed Bifilar Isolation Transformer and Current Balun","authors":"J. Mclean","doi":"10.1109/EMCSI38923.2020.9191598","DOIUrl":"https://doi.org/10.1109/EMCSI38923.2020.9191598","url":null,"abstract":"Bifilar windings have been employed in isolation transformers in order to minimize the leakage inductance and hence improve frequency and time response. A numerical analysis of the bifilar isolation transformer viewed as a 3-port balun based on odd/even mode transmission line analysis is given. The numerical predictions for the 3-port admittance parameters show that the device functions as a true current balun in the low frequency limit, but that the performance degrades as the electrical length of the bifilar winding approaches one-quarter wavelength for the odd mode. The model also shows that for an isolated, 2-terminal, load a complete null in the response occurs when the electrical length of the bifilar windings is one-half wavelength for the odd mode. A prototype bifilar isolation transformer was fabricated and characterized. The measured data is in agreement with the numerical predictions thus supporting the statements concerning performance. It is further shown that a previously proposed, 2-stage current balun consisting of a bifilar isolation transformer followed by a bifilar, common-mode choke provides superior current balance over a broad bandwidth, but is still limited to operation below the odd-mode half-wave frequency of the bifilar winding of the isolation stage.","PeriodicalId":189322,"journal":{"name":"2020 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131369073","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}
Gerardo Romo Luevano, T. Michalka, Varin Sriboonlue
{"title":"Broadband Characterization of Copper Roughness by Comparing Striplines Fabricated on VLP and RTF Copper","authors":"Gerardo Romo Luevano, T. Michalka, Varin Sriboonlue","doi":"10.1109/emcsi38923.2020.9191534","DOIUrl":"https://doi.org/10.1109/emcsi38923.2020.9191534","url":null,"abstract":"This paper presents a method for broadband characterization of copper roughness factor on stripline interconnects. The characterization relies on S-parameter measurements of striplines fabricated with smooth (VLP) and rough (RTF) copper finishing on otherwise identical stack-ups. The VLP and RTF interconnects are each characterized from two-line measurements; then the R, L, G, C parameters for each are extracted under the same Tanδ condition, which yields the copper roughness factor for the RTF interconnects accurately characterized up to 40 GHz. The characterization allows a straightforward comparison against the predictions of standard copper roughness models such as Hammerstad, Huray, and Groiss. The experimental characterization shows excellent correlation to the Hammerstad model, and good correlation to the Huray and Groiss models for the studied interconnects.","PeriodicalId":189322,"journal":{"name":"2020 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"58 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132327198","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}
Ling Zhang, Wenchang Huang, Jack Juang, Hank Lin, B. Tseng, C. Hwang
{"title":"An Enhanced Deep Reinforcement Learning Algorithm for Decoupling Capacitor Selection in Power Distribution Network Design","authors":"Ling Zhang, Wenchang Huang, Jack Juang, Hank Lin, B. Tseng, C. Hwang","doi":"10.1109/EMCSI38923.2020.9191512","DOIUrl":"https://doi.org/10.1109/EMCSI38923.2020.9191512","url":null,"abstract":"The selection of decoupling capacitors (decap) is a critical but tedious process in power distribution network (PDN) design. In this paper, an improved decap-selection algorithm based on deep reinforcement learning (DRL), which seeks the minimum number of decaps through a self-exploration training to satisfy a given target impedance, is presented. Compared with the previous relevant work: the calculation speed of PDN impedance is significantly increased by adopting an impedance matrix reduction method; also, the enhanced algorithm performs a better convergence by utilizing the techniques of double Q-learning and prioritized experience replay; furthermore, a well-designed reward is proposed to facilitate long-term convergence when more decaps are required. The proposed algorithm demonstrates the feasibility of achieving decent performance using DRL with pre-trained knowledge for more complicated engineering tasks in the future.","PeriodicalId":189322,"journal":{"name":"2020 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131604254","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}
{"title":"Dipole Source Reconstruction By Convolutional Neural Networks","authors":"Jiayi He, Qiaolei Huang, J. Fan","doi":"10.1109/EMCSI38923.2020.9191529","DOIUrl":"https://doi.org/10.1109/EMCSI38923.2020.9191529","url":null,"abstract":"Equivalent dipole moments are widely used for noise source reconstruction in radio frequency interference (RFI) study. The equivalent dipole sources are usually extracted from measured near-field pattern. This paper introduces a machine learning based method to extract the dipole moments. A convolutional neural network is trained to perform a multi-label classification to determine the type of dipole moments. The locations of the dipole moments are obtained from the global averaging pooling layer. Then the magnitude and phase of the dipoles can be calculated from least square (LSQ) optimization. The proposed method is tested on simulated near-field patterns. The comparison between reconstructed field pattern and original field pattern is given.","PeriodicalId":189322,"journal":{"name":"2020 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"1049 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131823452","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}
{"title":"The Effects of Cable routing and Length on The Resonant Frequencies in a Shielding Box","authors":"M. Bahadorzadeh, C. Bunting, J. West","doi":"10.1109/EMCSI38923.2020.9191484","DOIUrl":"https://doi.org/10.1109/EMCSI38923.2020.9191484","url":null,"abstract":"The effects of cable routing within a shielding box has been evaluated using a numerical electromagnetic package. Different cable paths with both constant and varying lengths have proposed. The cable-feed port reflection coefficient and radiated electric field were considered for different test cases. The influence of slot apertures in the enclosure itself, gaps between external structures and the enclosure body, and cable route on radiated electric field and excited slot resonances are examined. The coupling between enclosure and cable resonances and their effects radiation emission are presented. The effect of the wire path on the slot resonances is also shown. The simulations for representative cases were empirically verified through comparison with laboratory measurement.","PeriodicalId":189322,"journal":{"name":"2020 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"201 7","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131893395","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}
{"title":"Fault Propagation, EMI Propagation, and Fault Containment in Aerospace Systems","authors":"Reinaldo Perez","doi":"10.1109/EMCSI38923.2020.9191632","DOIUrl":"https://doi.org/10.1109/EMCSI38923.2020.9191632","url":null,"abstract":"The occurrence of faults in aerospace system hardware and software have consequences ranging from minor effects to catastrophic effects, and such faults can directly affect the safety of hardware and personnel. There are many origins to fault conditions, and the hardware that is capable of still meeting its performance requirements after experiencing itself a fault is said to be fault tolerant. A fault tolerant hardware is capable of detecting, isolating, and recovering from a fault condition; and this is a subfield of control engineering. An aerospace system that has been shown to have electromagnetic compatibility (EMC) in all its subsystems and systems cannot induced faults caused by electromagnetic interference (EMI). It can be proposed that the presence of EMI (or lack of EMC) is analogous to a potential fault initiator and the effects can likewise range from minor to severe. This paper starts by addressing the consequences of hardware failure in aerospace systems from a fault perspective, because the design of fault tolerant system is a major endeavor in aerospace. To arrive to this goal the paper starts with the concepts of fault, fault propagation, and a new concept called fault containment region. The paper then proceeds to provide two very recent examples in the aircraft industry of fault propagation with catastrophic effects. The paper proceeds to introduce the concept of EMI fault containment and a brief introduction to another new concept called the EMI containment region. The paper proceeds with an example of EMI fault containment region. The paper ends with a lesson learned conclusions.","PeriodicalId":189322,"journal":{"name":"2020 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"80 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132787669","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}
S. Walunj, T. Makharashvili, C. Hwang, D. Beetner, Brian Booth, Kerry Martin
{"title":"Direct Measurement and Representation of Common-mode Sources in Cable Harnesses","authors":"S. Walunj, T. Makharashvili, C. Hwang, D. Beetner, Brian Booth, Kerry Martin","doi":"10.1109/emcsi38923.2020.9191589","DOIUrl":"https://doi.org/10.1109/emcsi38923.2020.9191589","url":null,"abstract":"Predicting common-mode currents in cable harnesses is essential for predicting radiated emissions early in the design process. Using component-level tests to predict system-level emissions is difficult, however, as the common-mode current seen in the component-level test may differ dramatically from that seen in the system. A component-level measurement-based approach for characterizing common-mode sources is proposed here which may be used to predict common-mode currents for a variety of harness configurations. Common-mode source measurements were made by grouping sources together by the size of the loads they drive and measuring the effective common-mode source voltage and impedance for the group through a characterization board. Common-mode currents were predicted using these sources and transmission line models of the harness. The method was validated by characterizing sources in an engine controller from 20 MHz to 200 MHz and then predicting common-mode currents on harnesses of a variety of lengths, and thus for different common-mode impedances looking into the harness. The worst error between the predicted and measured common-mode current was less than 7 dB in the 20 MHz to 200 MHz frequency range.","PeriodicalId":189322,"journal":{"name":"2020 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"45 12","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132433730","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}