Pub Date : 2022-08-01DOI: 10.1109/EMCSI39492.2022.9889617
Jingook Kim, Sangyeong Jeong, Jun-Bae Kim, Jeong-Don Ihm
The automatic SPICE-integrated reinforcement learning (RL) is proposed for decap optimization for radiated electromagnetic interference (EMI) and power integrity. A power distribution network (PDN) structure is modeled in a circuit fashion to be solved in a SPICE solver. For EMI optimization, the branch currents for radiated EMI calculation were obtained from ac simulations. For PI optimization, the voltage fluctuations in time domain were obtained from transient simulations. Finally, it is demonstrated that a consistent RL environment integrated with SPICE solvers can be utilized in the optimization for both radiated EMI and PI.
{"title":"Automatic SPICE- Integrated Reinforcement Learning for Decap Optimization for EMI and Power Integrity","authors":"Jingook Kim, Sangyeong Jeong, Jun-Bae Kim, Jeong-Don Ihm","doi":"10.1109/EMCSI39492.2022.9889617","DOIUrl":"https://doi.org/10.1109/EMCSI39492.2022.9889617","url":null,"abstract":"The automatic SPICE-integrated reinforcement learning (RL) is proposed for decap optimization for radiated electromagnetic interference (EMI) and power integrity. A power distribution network (PDN) structure is modeled in a circuit fashion to be solved in a SPICE solver. For EMI optimization, the branch currents for radiated EMI calculation were obtained from ac simulations. For PI optimization, the voltage fluctuations in time domain were obtained from transient simulations. Finally, it is demonstrated that a consistent RL environment integrated with SPICE solvers can be utilized in the optimization for both radiated EMI and PI.","PeriodicalId":250856,"journal":{"name":"2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114990817","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}
Pub Date : 2022-08-01DOI: 10.1109/EMCSI39492.2022.9889315
Adam C. Hicks, John D. Ewan, William Kozma, M. Cotton
This article is intended to motivate and describe a new tropospheric scatter modelling and measurement validation effort that is underway at the Institute for Telecommunication Sciences (ITS). Immediately after World War II, there was a flurry of research conducted to investigate the phenomenon of forward scattering through the troposphere, or troposcatter, for over-the-horizon radio links. During the early 1950s, ITS researchers carried out an extensive measurement campaign now summarized in the ITS technical report Cheyenne Mountain Tropospheric Propagation Experiments [1]. Several propagation models were developed from this effort as well as from similar follow-on measurement campaigns, such as the Irregular Terrain Model (ITM) and IF-77 (ITS-FAA air-to-ground propagation model, circa 1977). These models are based on simplified assumptions, but they are still used in today's spectrum policy decisions. ITS engineers are currently developing a modern measurement system that incorporates the latest RF hardware capabilities and takes advantage of the extensive information now available about our meteorological and geographical environment to improve the accuracy of these models. This paper describes the current and proposed deployments of this modern and upgraded ITS troposcatter measurement system.
{"title":"Measuring Tropospheric Propagation in the 21st Century","authors":"Adam C. Hicks, John D. Ewan, William Kozma, M. Cotton","doi":"10.1109/EMCSI39492.2022.9889315","DOIUrl":"https://doi.org/10.1109/EMCSI39492.2022.9889315","url":null,"abstract":"This article is intended to motivate and describe a new tropospheric scatter modelling and measurement validation effort that is underway at the Institute for Telecommunication Sciences (ITS). Immediately after World War II, there was a flurry of research conducted to investigate the phenomenon of forward scattering through the troposphere, or troposcatter, for over-the-horizon radio links. During the early 1950s, ITS researchers carried out an extensive measurement campaign now summarized in the ITS technical report Cheyenne Mountain Tropospheric Propagation Experiments [1]. Several propagation models were developed from this effort as well as from similar follow-on measurement campaigns, such as the Irregular Terrain Model (ITM) and IF-77 (ITS-FAA air-to-ground propagation model, circa 1977). These models are based on simplified assumptions, but they are still used in today's spectrum policy decisions. ITS engineers are currently developing a modern measurement system that incorporates the latest RF hardware capabilities and takes advantage of the extensive information now available about our meteorological and geographical environment to improve the accuracy of these models. This paper describes the current and proposed deployments of this modern and upgraded ITS troposcatter measurement system.","PeriodicalId":250856,"journal":{"name":"2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"67 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124438342","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}
Pub Date : 2022-08-01DOI: 10.1109/EMCSI39492.2022.10050225
R. Jacksha
Development of a portable system to measure broadband electromagnetic emissions in underground mines poses many challenges, the most significant being mitigating the contribution of spectrum analyzer electric field emissions to the composite electromagnetic environment of a survey area. This paper presents a novel method to mitigate a spectrum analyzer's electric field emissions.
{"title":"Mitigation of Spectrum Analyzer Emissions in a Portable E-Field Measurement System","authors":"R. Jacksha","doi":"10.1109/EMCSI39492.2022.10050225","DOIUrl":"https://doi.org/10.1109/EMCSI39492.2022.10050225","url":null,"abstract":"Development of a portable system to measure broadband electromagnetic emissions in underground mines poses many challenges, the most significant being mitigating the contribution of spectrum analyzer electric field emissions to the composite electromagnetic environment of a survey area. This paper presents a novel method to mitigate a spectrum analyzer's electric field emissions.","PeriodicalId":250856,"journal":{"name":"2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127500644","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}
Pub Date : 2022-08-01DOI: 10.1109/EMCSI39492.2022.9889645
A. D’Aloia, H. C. Bidsorkhi, A. Tamburrano, M. S. Sarto
The feasibility of graphene based absorbing textiles for electromagnetic absorption at 5G frequency bands is investigated. With this aim, a novel manufacturing method for the production of polyvinylidene fluoride (PVDF) coatings filled with graphene nanoplatelets is investigated. The produced samples are morphologically characterized and the electrical and electromagnetic properties are assessed. In particular, the effective complex dielectric permittivity is measured in the Ku-band and the results are used to predict by simulations electromagnetic properties of the graphene based coatings for frequencies up to 40 GHz. Finally, the radar absorption properties are measured for frequencies up to 40 GHz.
{"title":"Graphene-Based Electromagnetic Absorbing Textiles for 5G Frequency Bands","authors":"A. D’Aloia, H. C. Bidsorkhi, A. Tamburrano, M. S. Sarto","doi":"10.1109/EMCSI39492.2022.9889645","DOIUrl":"https://doi.org/10.1109/EMCSI39492.2022.9889645","url":null,"abstract":"The feasibility of graphene based absorbing textiles for electromagnetic absorption at 5G frequency bands is investigated. With this aim, a novel manufacturing method for the production of polyvinylidene fluoride (PVDF) coatings filled with graphene nanoplatelets is investigated. The produced samples are morphologically characterized and the electrical and electromagnetic properties are assessed. In particular, the effective complex dielectric permittivity is measured in the Ku-band and the results are used to predict by simulations electromagnetic properties of the graphene based coatings for frequencies up to 40 GHz. Finally, the radar absorption properties are measured for frequencies up to 40 GHz.","PeriodicalId":250856,"journal":{"name":"2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125063612","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}
Pub Date : 2022-08-01DOI: 10.1109/EMCSI39492.2022.10050240
M. A. Dolatsara
Assigning parameters of a feed-forward equalizer (FFE) can be a challenging and time-consuming task. In this work we introduce a machine learning algorithm to automatically optimize these parameters without the need to a domain expert. Conventional optimizers are not applicable to this problem because of a constraint over the FFE parameters. Therefore, we reformulate the problem and propose a modified Bayesian optimization algorithm to take this constraint into account. The proposed approach is validated with an example.
{"title":"Equalization Optimization for SerDes Channels with Constrained Bayesian Optimization","authors":"M. A. Dolatsara","doi":"10.1109/EMCSI39492.2022.10050240","DOIUrl":"https://doi.org/10.1109/EMCSI39492.2022.10050240","url":null,"abstract":"Assigning parameters of a feed-forward equalizer (FFE) can be a challenging and time-consuming task. In this work we introduce a machine learning algorithm to automatically optimize these parameters without the need to a domain expert. Conventional optimizers are not applicable to this problem because of a constraint over the FFE parameters. Therefore, we reformulate the problem and propose a modified Bayesian optimization algorithm to take this constraint into account. The proposed approach is validated with an example.","PeriodicalId":250856,"journal":{"name":"2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"23 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123438959","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}
Pub Date : 2022-08-01DOI: 10.1109/EMCSI39492.2022.9889527
Ze Sun, Jian Liu, Xiaoyan Xiong, V. Khilkevich, Donghyun Kim, Darvl Beetner
To characterize additional conductor loss introduced by conductor surface roughness, various models have been proposed to describe the relationship between foil roughness levels and surface roughness correction factor. However, all these empirical or physical models require a PCB sample to be manufactured and analyzed in advance. The procedure requires dissecting the PCB and is time- and labor-consuming. To avoid such a process, a new surface roughness extraction process is proposed here. Only the measured S-parameter and nominal cross-sectional information of the board are needed to extract the roughness level of conductor foils. Besides, this method can also deal with boards having non-equal roughness on different conductor surfaces, which is common in the manufactured printed circuit boards (PCB). The roughness level on each surface can be extracted separately to accurately model their contribution to the total conductor loss. The presented method is validated by both simulation and measurement. A good correlation is achieved between extracted roughness level and the measured value from the microscope.
{"title":"Extraction of Stripline Surface Roughness Using Cross-section Information and S-parameter Measurements","authors":"Ze Sun, Jian Liu, Xiaoyan Xiong, V. Khilkevich, Donghyun Kim, Darvl Beetner","doi":"10.1109/EMCSI39492.2022.9889527","DOIUrl":"https://doi.org/10.1109/EMCSI39492.2022.9889527","url":null,"abstract":"To characterize additional conductor loss introduced by conductor surface roughness, various models have been proposed to describe the relationship between foil roughness levels and surface roughness correction factor. However, all these empirical or physical models require a PCB sample to be manufactured and analyzed in advance. The procedure requires dissecting the PCB and is time- and labor-consuming. To avoid such a process, a new surface roughness extraction process is proposed here. Only the measured S-parameter and nominal cross-sectional information of the board are needed to extract the roughness level of conductor foils. Besides, this method can also deal with boards having non-equal roughness on different conductor surfaces, which is common in the manufactured printed circuit boards (PCB). The roughness level on each surface can be extracted separately to accurately model their contribution to the total conductor loss. The presented method is validated by both simulation and measurement. A good correlation is achieved between extracted roughness level and the measured value from the microscope.","PeriodicalId":250856,"journal":{"name":"2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125319556","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}
Pub Date : 2022-08-01DOI: 10.1109/EMCSI39492.2022.10050233
Eleonora Palma, Alessandro Pali, L. Fabbri, F. Paulis
The tabbed lines have been shown to be effective for the reduction of the far-end crosstalk (FEXT) in high speed data buses. However the amount of tabbed lines in a specific line or bus is usually left to the layout designer without having at hand clear guidelines on how to implement them. The work proposed in this abstract aims at clearly analyzing the impact of the tabbed section percentage with respect to the overall line (bus) length. The presented parametric analysis demonstrates that a FEXT minimum can be always found in the percentage of tabbed portion. The corresponding percentage is function of the specific geometry of the tabs.
{"title":"Systematic Analysis for Tabbed Line Design","authors":"Eleonora Palma, Alessandro Pali, L. Fabbri, F. Paulis","doi":"10.1109/EMCSI39492.2022.10050233","DOIUrl":"https://doi.org/10.1109/EMCSI39492.2022.10050233","url":null,"abstract":"The tabbed lines have been shown to be effective for the reduction of the far-end crosstalk (FEXT) in high speed data buses. However the amount of tabbed lines in a specific line or bus is usually left to the layout designer without having at hand clear guidelines on how to implement them. The work proposed in this abstract aims at clearly analyzing the impact of the tabbed section percentage with respect to the overall line (bus) length. The presented parametric analysis demonstrates that a FEXT minimum can be always found in the percentage of tabbed portion. The corresponding percentage is function of the specific geometry of the tabs.","PeriodicalId":250856,"journal":{"name":"2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126960893","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}
Pub Date : 2022-08-01DOI: 10.1109/EMCSI39492.2022.10050232
Shahid Ahmed
We have considered a hybrid approach for a fullwave radiated emission from a complex cable harness configuration that involves a 3-D simulation with HFSS coupled with a 2-D simulation of the cable cross-sections for extracting RLGC parameters and distributing them in a 1-D transmission line model for an accurate determination of voltages and currents. Semi-empirical models are used to model the transfer impedance of braided shields. This hybrid approach greatly reduces the solve time and provides high fidelity simulations of radiated emission from cable harnesses in complex environments such as automotive and aerospace, which, otherwise would have been difficult. For real-life applications, twisted pairs, shielded, and insulated jackets can be conveniently modeled. Moreover, the design workflow is fully automated and scriptable, which significantly enhances its usefulness. A comprehensive study will be presented.
{"title":"HFSS Simulation Predicts the Radiated Emission from Complex Cable Harness Configuration","authors":"Shahid Ahmed","doi":"10.1109/EMCSI39492.2022.10050232","DOIUrl":"https://doi.org/10.1109/EMCSI39492.2022.10050232","url":null,"abstract":"We have considered a hybrid approach for a fullwave radiated emission from a complex cable harness configuration that involves a 3-D simulation with HFSS coupled with a 2-D simulation of the cable cross-sections for extracting RLGC parameters and distributing them in a 1-D transmission line model for an accurate determination of voltages and currents. Semi-empirical models are used to model the transfer impedance of braided shields. This hybrid approach greatly reduces the solve time and provides high fidelity simulations of radiated emission from cable harnesses in complex environments such as automotive and aerospace, which, otherwise would have been difficult. For real-life applications, twisted pairs, shielded, and insulated jackets can be conveniently modeled. Moreover, the design workflow is fully automated and scriptable, which significantly enhances its usefulness. A comprehensive study will be presented.","PeriodicalId":250856,"journal":{"name":"2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115097340","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}
Pub Date : 2022-08-01DOI: 10.1109/EMCSI39492.2022.9889657
P. Gottipati, Krishnaveni Mellachervu, Mingfeng Xue, Jingchen Liang, B. Leung, Jianmin Zhang
Speakers can be sensitive to nearby electronics. Electrical traces carrying high frequency electrical currents can induce electromagnetic current in the voice coil of a speaker. The induced current can cause vibration of the voice coil thereby resulting in audible acoustic noise. This paper provides a Multiphysics simulation workflow to compute the force on voice coil due to the induced electromagnetic field from an aggressor coil placed in the vicinity of the earbud module.
{"title":"Multiphysics Analysis of Induced Acoustic Noise in an Earbud Speaker","authors":"P. Gottipati, Krishnaveni Mellachervu, Mingfeng Xue, Jingchen Liang, B. Leung, Jianmin Zhang","doi":"10.1109/EMCSI39492.2022.9889657","DOIUrl":"https://doi.org/10.1109/EMCSI39492.2022.9889657","url":null,"abstract":"Speakers can be sensitive to nearby electronics. Electrical traces carrying high frequency electrical currents can induce electromagnetic current in the voice coil of a speaker. The induced current can cause vibration of the voice coil thereby resulting in audible acoustic noise. This paper provides a Multiphysics simulation workflow to compute the force on voice coil due to the induced electromagnetic field from an aggressor coil placed in the vicinity of the earbud module.","PeriodicalId":250856,"journal":{"name":"2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"70 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116052916","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}
Pub Date : 2022-08-01DOI: 10.1109/EMCSI39492.2022.9889619
Aarsh Nateghi, N. Moonen, M. Schaarschmidt, S. Fisahn, H. Garbe
This contribution evaluates the vulnerability of narrowband power line communication in the kHz frequency range through the implementation of frequency swept pulse intentional electromagnetic interference (IEMI) in the MHz frequency range. For this experiment, different types of digital modulation as well as different types of transmission mode are evaluated. The data frame error rate of the transmitter and receiver are compared when a low power frequency-swept pulse IEMI is coupled to the G3 power line communication. Finally, a mitigation plan to manage the risk of intentional EMI in power line communications is recommended.
{"title":"Effects of the MHz Frequency Range Electromagnetic Immunity of the Swept Frequency Pulse Coupled on the kHz Frequency Range G3 Power Line Communication","authors":"Aarsh Nateghi, N. Moonen, M. Schaarschmidt, S. Fisahn, H. Garbe","doi":"10.1109/EMCSI39492.2022.9889619","DOIUrl":"https://doi.org/10.1109/EMCSI39492.2022.9889619","url":null,"abstract":"This contribution evaluates the vulnerability of narrowband power line communication in the kHz frequency range through the implementation of frequency swept pulse intentional electromagnetic interference (IEMI) in the MHz frequency range. For this experiment, different types of digital modulation as well as different types of transmission mode are evaluated. The data frame error rate of the transmitter and receiver are compared when a low power frequency-swept pulse IEMI is coupled to the G3 power line communication. Finally, a mitigation plan to manage the risk of intentional EMI in power line communications is recommended.","PeriodicalId":250856,"journal":{"name":"2022 IEEE International Symposium on Electromagnetic Compatibility & Signal/Power Integrity (EMCSI)","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123003411","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}
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