Pub Date : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245713
R. Vick, J. Petzold, M. Rosenthal, J. Kasper
This article focuses on the derivation of emission limits at frequencies above 1GHz. Starting from the technical specification of new radio services as 5G, the wanted and the interference signals at the receiver are calculated for FR1. An alternative model based on power limits is introduced. To show the possible interference of modern equipment a 10 Gbit network was built up using Gigabit switches together with corresponding computers with Gbit network cards and was experimentally investigated in a FAR and RC. The performance of the different measurement environments at the higher frequencies was compared.
{"title":"Investigation of Emission Requirements above 1GHz towards 5G","authors":"R. Vick, J. Petzold, M. Rosenthal, J. Kasper","doi":"10.1109/EMCEUROPE48519.2020.9245713","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245713","url":null,"abstract":"This article focuses on the derivation of emission limits at frequencies above 1GHz. Starting from the technical specification of new radio services as 5G, the wanted and the interference signals at the receiver are calculated for FR1. An alternative model based on power limits is introduced. To show the possible interference of modern equipment a 10 Gbit network was built up using Gigabit switches together with corresponding computers with Gbit network cards and was experimentally investigated in a FAR and RC. The performance of the different measurement environments at the higher frequencies was compared.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"27 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134330560","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 : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245780
Bin Cao, Jiajun Lu, Yixing Gu, Jinjing Ren, Shenhui Jing
Radiated disturbances of electronic equipment are a mixture of different source signals. Decomposing the radiated disturbances in the time-domain is useful to gain insights of the process that generates the interference. In this paper, a single-channel blind source separation method based on adaptive sparse time-frequency analysis (ASTFA) and sparse component analysis (SCA) was proposed to decompose the radiated disturbances. Firstly, a signal component is obtained by ASTFA method from the radiated signal. Then, the signal component and the radiated signal form a two-dimensional matrix. Different source signals radiated from the equipment are obtained by using the SCA method on the matrix. A simulation of the electromagnetic interference decomposition is given to verify the effectiveness and accuracy of the proposed method.
{"title":"Decomposition of Radiated Disturbances Based on Single-channel Blind Source Separation","authors":"Bin Cao, Jiajun Lu, Yixing Gu, Jinjing Ren, Shenhui Jing","doi":"10.1109/EMCEUROPE48519.2020.9245780","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245780","url":null,"abstract":"Radiated disturbances of electronic equipment are a mixture of different source signals. Decomposing the radiated disturbances in the time-domain is useful to gain insights of the process that generates the interference. In this paper, a single-channel blind source separation method based on adaptive sparse time-frequency analysis (ASTFA) and sparse component analysis (SCA) was proposed to decompose the radiated disturbances. Firstly, a signal component is obtained by ASTFA method from the radiated signal. Then, the signal component and the radiated signal form a two-dimensional matrix. Different source signals radiated from the equipment are obtained by using the SCA method on the matrix. A simulation of the electromagnetic interference decomposition is given to verify the effectiveness and accuracy of the proposed method.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115370912","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 : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245683
Ken Sato, Y. Kamimura
In this paper, the improvement of the visualization method of the electromagnetic field distribution using a simple meter is described. Visualization is important to correctly understand the biological effects from electromagnetic fields. In this study, it is possible to measure more easily by using a simple meter instead of the conventional high-performance meter. In addition, a method has been proposed in which the measurement position, which used to be an IR marker or depth sensor until now, can be measured more easily by using object detection by machine-learning. Furthermore, user-friendly measurement is possible by correcting the deviation due to the scanning angle of the magnetic field sensor using machine-learning.
{"title":"A Simple Measurement Method of Electromagnetic Field Distribution using Machine-Learning","authors":"Ken Sato, Y. Kamimura","doi":"10.1109/EMCEUROPE48519.2020.9245683","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245683","url":null,"abstract":"In this paper, the improvement of the visualization method of the electromagnetic field distribution using a simple meter is described. Visualization is important to correctly understand the biological effects from electromagnetic fields. In this study, it is possible to measure more easily by using a simple meter instead of the conventional high-performance meter. In addition, a method has been proposed in which the measurement position, which used to be an IR marker or depth sensor until now, can be measured more easily by using object detection by machine-learning. Furthermore, user-friendly measurement is possible by correcting the deviation due to the scanning angle of the magnetic field sensor using machine-learning.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"111 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115642796","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 : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245710
M. Wiles, F. Trautnitz, A. Kriz
In CISPR 16-1-4 [1], an extension of the chapter on the suitability of EMC test sites from 9 kHz to 30 MHz is being prepared. This work is progressing towards a (Committee Draft for Vote) [2]. An international standard is currently forecast for publication in 2021.
{"title":"NSA chamber validation measurements below 30 MHz using loop antennas","authors":"M. Wiles, F. Trautnitz, A. Kriz","doi":"10.1109/EMCEUROPE48519.2020.9245710","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245710","url":null,"abstract":"In CISPR 16-1-4 [1], an extension of the chapter on the suitability of EMC test sites from 9 kHz to 30 MHz is being prepared. This work is progressing towards a (Committee Draft for Vote) [2]. An international standard is currently forecast for publication in 2021.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114229305","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 : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245764
Xinwei Song, Yuntao Yue, Xinyue Zhu, Hao Chang
Public exposure to electromagnetic fields in the environment has been steadily increasing as the development and application of various wireless technologies, especially the coming of the 5G era. The growing concern about the possible consequent health risks prompts many organizations to conduct relevant studies and set limits to the exposure levels. The spatial distributions of the electromagnetic environment become very important data. The aim of this paper is to investigate the radio-frequency electromagnetic environment in Beijing by measuring the electromagnetic field levels of three representative downtown areas from 10 MHz to 8.0 GHz. The spatial distributions of the electromagnetic field in measured areas are illustrated as two-dimensional maps through interpolation techniques. These results are analyzed with reference to the exposure level limits in China and the official annual report of the national radiation environment.
{"title":"Measurement and Analysis of the Radio-Frequency Electromagnetic Environment in Downtown Areas of Beijing","authors":"Xinwei Song, Yuntao Yue, Xinyue Zhu, Hao Chang","doi":"10.1109/EMCEUROPE48519.2020.9245764","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245764","url":null,"abstract":"Public exposure to electromagnetic fields in the environment has been steadily increasing as the development and application of various wireless technologies, especially the coming of the 5G era. The growing concern about the possible consequent health risks prompts many organizations to conduct relevant studies and set limits to the exposure levels. The spatial distributions of the electromagnetic environment become very important data. The aim of this paper is to investigate the radio-frequency electromagnetic environment in Beijing by measuring the electromagnetic field levels of three representative downtown areas from 10 MHz to 8.0 GHz. The spatial distributions of the electromagnetic field in measured areas are illustrated as two-dimensional maps through interpolation techniques. These results are analyzed with reference to the exposure level limits in China and the official annual report of the national radiation environment.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"205 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114354686","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 : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245852
J. L. Rotgerink, Georgios Erotas, N. Moonen, F. Leferink
A comparison between crosstalk measurement techniques is made to investigate their applicability and efficiency for determining crosstalk between cables above a ground plane made of copper or carbon-fibre reinforced plastic (CFRP). Cost effectiveness, accuracy, speed and complexity of the methods are evaluated. All measurements are performed on two PCBs containing two pairs of copper traces. The techniques that are considered include balanced Vector Network Analyzer (VNA) measurements, balanced Spectrum Analyzer (SA) measurements, balanced EMI receiver (EMI-R) measurements, single-ended VNA measurements converted to mixed-mode S-parameters, and finally measurements with a signal generator (SG) and an oscilloscope (OSC). For verification, measured results are also compared to three simulation techniques, involving a Method of Moments simulation and two different transmission line models.
{"title":"Comparing Various Measurement and Simulation Techniques for Estimating Crosstalk","authors":"J. L. Rotgerink, Georgios Erotas, N. Moonen, F. Leferink","doi":"10.1109/EMCEUROPE48519.2020.9245852","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245852","url":null,"abstract":"A comparison between crosstalk measurement techniques is made to investigate their applicability and efficiency for determining crosstalk between cables above a ground plane made of copper or carbon-fibre reinforced plastic (CFRP). Cost effectiveness, accuracy, speed and complexity of the methods are evaluated. All measurements are performed on two PCBs containing two pairs of copper traces. The techniques that are considered include balanced Vector Network Analyzer (VNA) measurements, balanced Spectrum Analyzer (SA) measurements, balanced EMI receiver (EMI-R) measurements, single-ended VNA measurements converted to mixed-mode S-parameters, and finally measurements with a signal generator (SG) and an oscilloscope (OSC). For verification, measured results are also compared to three simulation techniques, involving a Method of Moments simulation and two different transmission line models.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"46 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114514695","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 : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245736
Jin Ning Hu, N. Huang, B. Tseng
As the technology continues scaling down and the data rate is increasing dramatically, PCB design has become more challenging than ever. Keeping track of signal and power integrity becomes a requirement for PCB designers in order to meet the product development time and reduce the overall cost. In high speed IO signals, vias play a critical role for the signal integrity quality. It is important to design the via impedance within a certain range. Due to server products have a higher thickness of PCB design than other consumer products, and its data rates are on the cutting edge, the need for the via optimization is acquired. In this work, the investigate on the via impedance control is studied to optimize the via design on the pitch, individual and oval antipad shapes. And the further analyses of via design parameters are examined to understand the effects of dominance.
{"title":"Via Design Optimization for Server Applications","authors":"Jin Ning Hu, N. Huang, B. Tseng","doi":"10.1109/EMCEUROPE48519.2020.9245736","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245736","url":null,"abstract":"As the technology continues scaling down and the data rate is increasing dramatically, PCB design has become more challenging than ever. Keeping track of signal and power integrity becomes a requirement for PCB designers in order to meet the product development time and reduce the overall cost. In high speed IO signals, vias play a critical role for the signal integrity quality. It is important to design the via impedance within a certain range. Due to server products have a higher thickness of PCB design than other consumer products, and its data rates are on the cutting edge, the need for the via optimization is acquired. In this work, the investigate on the via impedance control is studied to optimize the via design on the pitch, individual and oval antipad shapes. And the further analyses of via design parameters are examined to understand the effects of dominance.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115775114","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 : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245734
S. Okuyama, K. Osabe, N. Kuwabara, F. Amemiya, T. Shimasaki, H. Muramatsu
Reproducibility of radiated disturbance measurements is influenced by the line impedance of the power source used for EUT. A VHF-LISN was proposed to solve this issue. A VHF-LISN can define line impedance so as to avoid such influences caused by different line impedances for connection points at different test sites. At present, two proposed types of VHF-LISN - balanced termination and unbalanced termination - are being considered for implementation in CISPR 16 basic measurement standards. Round robin testing was conducted to investigate the effectiveness of improving reproducibility of radiated emission measurement with two types of VHF-LISN, using a versatile comb generator having two signal source modes, common mode (CM) and differential mode (DM), and by using both 2-wire and 3-wire AC mains cable respectively. CMAD termination was provided as an option. The testing concluded that reproducibility between test sites was improved by VHF-LISN termination for both CM and DM emission sources with CMAD termination effectiveness proving to be limited in the case of 2-wire mains cable being used in CM signal source measurements.
{"title":"Investigating Power Line Termination Device Effectiveness in Regards to Radiated Emission Measurement Reproducibility in Consideration of Two Disturbance Sources and AC Mains Cable","authors":"S. Okuyama, K. Osabe, N. Kuwabara, F. Amemiya, T. Shimasaki, H. Muramatsu","doi":"10.1109/EMCEUROPE48519.2020.9245734","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245734","url":null,"abstract":"Reproducibility of radiated disturbance measurements is influenced by the line impedance of the power source used for EUT. A VHF-LISN was proposed to solve this issue. A VHF-LISN can define line impedance so as to avoid such influences caused by different line impedances for connection points at different test sites. At present, two proposed types of VHF-LISN - balanced termination and unbalanced termination - are being considered for implementation in CISPR 16 basic measurement standards. Round robin testing was conducted to investigate the effectiveness of improving reproducibility of radiated emission measurement with two types of VHF-LISN, using a versatile comb generator having two signal source modes, common mode (CM) and differential mode (DM), and by using both 2-wire and 3-wire AC mains cable respectively. CMAD termination was provided as an option. The testing concluded that reproducibility between test sites was improved by VHF-LISN termination for both CM and DM emission sources with CMAD termination effectiveness proving to be limited in the case of 2-wire mains cable being used in CM signal source measurements.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"103 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115802659","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 : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245842
Yuzo Yajima, H. Kinoda, T. Aoki, C. Miyazaki, Y. Sasaki, Masayuki Tatsumi, T. Kasai
In orbit satellite, it is major source of unit malfunction that spacecraft material discharging. The two major reason of malfunction are, 1: Low voltage threshold material/process for creeping discharge, and 2: Weak unit for noise. If the switching unit is affected by noise, critical failure occurs due to the hot-switching. In addition, it is susceptible to noise by using the newest components/COTS.In the through of previous satellite development, we decided that satellite manufacturer selected discharge hardened material, but not enough to evaluate knowledge for effects of noise propagation caused by material discharge. There are two possible propagation paths for the discharge noise: space propagation and panel propagation.Well known as that some unit cannot find problems with existing test methods. The major perspective of current standard test method (from MIL/ESA) are space propagation for coupling of cable. It is not enough to evaporate the influence of panel propagation. The test method that is currently the world's standard is focused on applying noise to cables by spatial propagation. It is not sufficient as a method for evaluating the noise that propagates through the panel and the effects other than the cable.In this paper, we propose the test method to evaluate the effect on the unit for noise propagation on the structure panel, based on our test results performed by the gun generator.First of all, we got Dielectric Surface Breakdowns Voltage of some materials by ELECTRON-BEAM RESISTIVITY TEST that are basic characteristics. After that, the unit was mounted on a satellite model panel (modeling the satellite structure: it is Al honeycomb core/Al skin), and the noise injection test was performed. Measured the threshold at which the device malfunctioned.A simple evaluation model (using Al metal panel) and a satellite model panel were compared, and the same evaluation result as the satellite model panel result was obtained.Therefore, we propose a simple test method using an Al flat panel and a noise source as an evaluation method for the noise propagating through the satellite structure panel.We also introduce our activity to implement our findings into EMC technical standards not only Japanese standard document, but also international standard such as ISO.
{"title":"New approach for EMC Assurance of Noise Propagation Effects on Spacecraft Unit","authors":"Yuzo Yajima, H. Kinoda, T. Aoki, C. Miyazaki, Y. Sasaki, Masayuki Tatsumi, T. Kasai","doi":"10.1109/EMCEUROPE48519.2020.9245842","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245842","url":null,"abstract":"In orbit satellite, it is major source of unit malfunction that spacecraft material discharging. The two major reason of malfunction are, 1: Low voltage threshold material/process for creeping discharge, and 2: Weak unit for noise. If the switching unit is affected by noise, critical failure occurs due to the hot-switching. In addition, it is susceptible to noise by using the newest components/COTS.In the through of previous satellite development, we decided that satellite manufacturer selected discharge hardened material, but not enough to evaluate knowledge for effects of noise propagation caused by material discharge. There are two possible propagation paths for the discharge noise: space propagation and panel propagation.Well known as that some unit cannot find problems with existing test methods. The major perspective of current standard test method (from MIL/ESA) are space propagation for coupling of cable. It is not enough to evaporate the influence of panel propagation. The test method that is currently the world's standard is focused on applying noise to cables by spatial propagation. It is not sufficient as a method for evaluating the noise that propagates through the panel and the effects other than the cable.In this paper, we propose the test method to evaluate the effect on the unit for noise propagation on the structure panel, based on our test results performed by the gun generator.First of all, we got Dielectric Surface Breakdowns Voltage of some materials by ELECTRON-BEAM RESISTIVITY TEST that are basic characteristics. After that, the unit was mounted on a satellite model panel (modeling the satellite structure: it is Al honeycomb core/Al skin), and the noise injection test was performed. Measured the threshold at which the device malfunctioned.A simple evaluation model (using Al metal panel) and a satellite model panel were compared, and the same evaluation result as the satellite model panel result was obtained.Therefore, we propose a simple test method using an Al flat panel and a noise source as an evaluation method for the noise propagating through the satellite structure panel.We also introduce our activity to implement our findings into EMC technical standards not only Japanese standard document, but also international standard such as ISO.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"11 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115902440","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 : 2020-09-23DOI: 10.1109/EMCEUROPE48519.2020.9245630
Siriana Paonessa, Walter Picariello, L. Bocciolini, C. Zappacosta, S. Pascoli, B. Tellini, M. Macucci
We present a case study on the evaluation of the radiated emission from a railway vehicle according to the EN 50121 standard. Measurements were performed in an open-area test site in two conditions: stationary mode and slow-moving mode, according to the technical document EN 50121-3-1:2018. Magnetic and electric field strengths were measured and compared with limit curves. The considered frequency range is from 150 kHz to 1 GHz. We exploit a time-domain analysis implemented with an EMI receiver, instead of a conventional swept frequency analysis, in order to reduce ambient noise variation, according to CISPR 16-1-1. The usage of a hybrid antenna is proposed to reduce the time needed to cover the 30 MHz to 1 GHz frequency range. We discuss the difficulties resulting from the contribution of external sources, which could be suppressed by performing the measurements in a suitable semi-anechoic chamber, such as the one available at the Laboratories of the Italian Railway Infrastructure Manager (RFI) Osmannoro location. We provide evidence that emission measurements performed in such semi-anechoic chamber yield results in agreement with those obtained in an open-area site.
{"title":"Analysis of the electromagnetic emission of a railway vehicle according to the EN 50121-3-1 standard: a case study","authors":"Siriana Paonessa, Walter Picariello, L. Bocciolini, C. Zappacosta, S. Pascoli, B. Tellini, M. Macucci","doi":"10.1109/EMCEUROPE48519.2020.9245630","DOIUrl":"https://doi.org/10.1109/EMCEUROPE48519.2020.9245630","url":null,"abstract":"We present a case study on the evaluation of the radiated emission from a railway vehicle according to the EN 50121 standard. Measurements were performed in an open-area test site in two conditions: stationary mode and slow-moving mode, according to the technical document EN 50121-3-1:2018. Magnetic and electric field strengths were measured and compared with limit curves. The considered frequency range is from 150 kHz to 1 GHz. We exploit a time-domain analysis implemented with an EMI receiver, instead of a conventional swept frequency analysis, in order to reduce ambient noise variation, according to CISPR 16-1-1. The usage of a hybrid antenna is proposed to reduce the time needed to cover the 30 MHz to 1 GHz frequency range. We discuss the difficulties resulting from the contribution of external sources, which could be suppressed by performing the measurements in a suitable semi-anechoic chamber, such as the one available at the Laboratories of the Italian Railway Infrastructure Manager (RFI) Osmannoro location. We provide evidence that emission measurements performed in such semi-anechoic chamber yield results in agreement with those obtained in an open-area site.","PeriodicalId":332251,"journal":{"name":"2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE","volume":"22 6S 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2020-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122815020","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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