{"title":"A Review On Links Between Different EMC Test Environments in Medical Technologies","authors":"Nandun Senevirathna, R. Kleihorst, A. Roc’h","doi":"10.1109/EMCEurope51680.2022.9900939","DOIUrl":"https://doi.org/10.1109/EMCEurope51680.2022.9900939","url":null,"abstract":"From electromagnetic compatibility (EMC) perspective, electromagnetic environments of (test) locations may be broadly classified as controlled or uncontrolled environments. Standardized, controlled EMC test environments favour the reproducibility of the test results. However, the actual intended use environments of most electrical equipment (e.g., medical electrical equipment) are uncontrolled in general. Developing the tools to evaluate the correlations between controlled and uncontrolled test environments can support realizing the risk-based EMC approach required by the regulations. Such an approach would facilitate better prediction of actual risks in the (uncontrolled) environments where those equipment are intended to be used. That would help achieve effective risk management. This paper emphasizes the need for studying links between different EMC test environments and provides a review of some of the approaches relating to establishing such links. The scope of this work is bound to EMC in the medical electrical equipment domain with respect to radiated EMI.","PeriodicalId":268262,"journal":{"name":"2022 International Symposium on Electromagnetic Compatibility – EMC Europe","volume":"28 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122011868","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":"Electromagnetic Noise as Entropy Source for Cryptographic System","authors":"J. Nemec, S. Kovár, Iva Kavankova, Jan Valouch","doi":"10.1109/EMCEurope51680.2022.9901142","DOIUrl":"https://doi.org/10.1109/EMCEurope51680.2022.9901142","url":null,"abstract":"This paper presents a system for gathering electromagnetic noise to extract surrounding entropy at 430 MHz. The uniqueness of electromagnetic noise depends on geographical location, time, used technology, and a plethora of other variables. The proposed system consisting of telescopic whip antenna and software defined radio HackRF One takes advantage of the said fact to extract entropy and transform it into a random number which could be then used in cryptography. Said system is supposed to be low-cost and made from generally available equipment to ensure usability for the general population. Three experiments were devised to transform received noise into random numbers. The first experiment extracts entropy from the time domain by averaging the magnitude of the signal and comparing it to magnitude. The second experiment uses Fast Fourier Transformation to obtain the frequency composition of the received signal and extracts entropy out of magnitude of different frequencies. The last experiment combines the two through logical operation XOR to gain the random number. Obtained random numbers are then tested for randomness by checking entropy, monobit test from NIST standard, and proportion of logic ones and zeroes in the sequence.","PeriodicalId":268262,"journal":{"name":"2022 International Symposium on Electromagnetic Compatibility – EMC Europe","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127790515","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}
Gabriel Fellner, A. Pak, Seyed Mostafa Mousavi, Christoph Koger, A. khorrami, D. Pommerenke
{"title":"Quantification of ESD Pulses Caused by Collision of Objects","authors":"Gabriel Fellner, A. Pak, Seyed Mostafa Mousavi, Christoph Koger, A. khorrami, D. Pommerenke","doi":"10.1109/EMCEurope51680.2022.9901123","DOIUrl":"https://doi.org/10.1109/EMCEurope51680.2022.9901123","url":null,"abstract":"Well-insulated portable devices are exposed to field coupled impulsive ESDs if they are carried e.g., in a backpack. These pulses are created by tribo-charging of metallic objects as a result of movement and subsequent discharges. Due to the size of the metallic objects and low charge voltages, the frequency spectrum exceeds 5 GHz. The pulses can damage or upset devices. The paper quantifies the charge voltages and transient field strength by reproducing typical scenario and capturing transient fields with a bandwidth of more than 10 GHz. The charge voltages are estimated by comparing measurements to numerical modeling of the discharges.","PeriodicalId":268262,"journal":{"name":"2022 International Symposium on Electromagnetic Compatibility – EMC Europe","volume":"9 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126429788","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}
Y. Kuznetsov, A. Baev, M. Konovalyuk, A. Gorbunova, J. Russer
{"title":"Independent Component Analysis of the Cyclostationary Signals in the Transmission Line","authors":"Y. Kuznetsov, A. Baev, M. Konovalyuk, A. Gorbunova, J. Russer","doi":"10.1109/EMCEurope51680.2022.9901014","DOIUrl":"https://doi.org/10.1109/EMCEurope51680.2022.9901014","url":null,"abstract":"The blind separation of the cyclostationary signals using a single channel measurement in transmission line is proposed. The waveform identification of the partial pulse responses is evaluated for additively mixed sources of the data, inter-symbol interference and crosstalk. A matrix model of a composed random vectors is considered. The proposed estimation procedure is based on pre-processing using principal component analysis of measured data by digital oscilloscope and following independent component analysis. The component analysis allows diagnostics of signal integrity using eye-diagram patterns in additional dimension of sources and interference.","PeriodicalId":268262,"journal":{"name":"2022 International Symposium on Electromagnetic Compatibility – EMC Europe","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131406698","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":"Electromagnetic Compatibility of Track Circuits with Parallel Traction Network","authors":"V. Havryliuk, Regis Nibaruta, M. A.","doi":"10.1109/EMCEurope51680.2022.9901264","DOIUrl":"https://doi.org/10.1109/EMCEurope51680.2022.9901264","url":null,"abstract":"The problem considered in the work is related to ensuring the electromagnetic compatibility of track circuits and automatic locomotive signaling with nearby traction network in the areas of their approaching and parallel arrangement. A simplified model of the distribution of interference induced in rails by a nearby traction network was developed and investigated. To overcome the difficulties of modeling, associated with the longitudinal inhomogeneity of the traction network, it is proposed to carry out the simulation in two stages. At the first stage, the currents in all conductors of traction network are determined without taking into account the equipment of track circuits connected to the rails. And at the second stage, the interference induced in the rails of the track with direct current traction is specified, taking into account the actual design of the tracks and the equipment connected to the rails in the areas of interest. The method for monitoring electromagnetic interference in rails, based on the use of the Pearson correlation coefficient of input and output currents of track circuits, is considered, which allows to timely detect interference that can lead to failures in the operation of track circuits and automatic locomotive signaling. Results of the calculations by the proposed model agree satisfactorily with the measurement results.","PeriodicalId":268262,"journal":{"name":"2022 International Symposium on Electromagnetic Compatibility – EMC Europe","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126291953","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":"Effectiveness of Radiofrequency Field Exposure Assessment for Vehicle Occupants Based on Empty Vehicle Field Data and Field Reference Levels","authors":"A. Ruddle","doi":"10.1109/EMCEurope51680.2022.9901294","DOIUrl":"https://doi.org/10.1109/EMCEurope51680.2022.9901294","url":null,"abstract":"Electromagnetic field levels are widely used as a convenient metric for assessing non-localised human exposures, by comparing them with field reference levels derived for standing humans under uniform exposure in an open environment. In practice, however, people are more frequently seated in partially resonant cavities, such as buildings or vehicles. This paper outlines a simulation-based investigation of the possible effectiveness of such an approach for vehicle occupants, including the influence of occupancy variations, for frequencies in the range 0.4-2.4 GHz. The results indicate that limiting the average empty-vehicle fields to the field reference levels recommended by 1999/519/EC did not ensure compliance with the basic restrictions at the higher frequencies. However, different statistical field metrics or alternative reference levels could achieve a safety factor of two or more at the higher frequencies. These observations have implications for the development of related standards for assessing field exposure levels in cars and other human environments.","PeriodicalId":268262,"journal":{"name":"2022 International Symposium on Electromagnetic Compatibility – EMC Europe","volume":"83 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125695704","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":"Efficient Measurement Techniques and Modelling of Printed Circuit Board Shields","authors":"A. Marvin, J. Dawson","doi":"10.1109/EMCEurope51680.2022.9901029","DOIUrl":"https://doi.org/10.1109/EMCEurope51680.2022.9901029","url":null,"abstract":"The measurement of shielding effectiveness of printed circuit board shields can be undertaken with the shields connected to a measurement jig installed in a reverberation chamber. Normally the connection of the shield to the jig would be made by soldering. This has disadvantages associated with the de-soldering process and the subsequent re-use of the shield and the jig. Here we describe experiments to measure the shielding effectiveness of these shields using a jig that relies on clamping the shield to the jig and the use of silver conducting paint to facilitate connection. The former proved unsatisfactory whilst the latter has significant advantages. Numerical models of the shield and jig illustrate the processes involved.","PeriodicalId":268262,"journal":{"name":"2022 International Symposium on Electromagnetic Compatibility – EMC Europe","volume":"99 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128328169","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}
O. Sen, Yasin Özkan, E. Çamaşırcıoğlu, S. Acak, Ali Karaali, Ali Öztürk, S. Cakir, Hülya Belirgen, Merve Deniz Kozan, Bahadır Tektaş, Hakan Altun, Burak Demirdöğen, Zeynep Sağır Sefer
{"title":"Interlaboratory Comparison Measurements for Military Magnetic Emission Test","authors":"O. Sen, Yasin Özkan, E. Çamaşırcıoğlu, S. Acak, Ali Karaali, Ali Öztürk, S. Cakir, Hülya Belirgen, Merve Deniz Kozan, Bahadır Tektaş, Hakan Altun, Burak Demirdöğen, Zeynep Sağır Sefer","doi":"10.1109/EMCEurope51680.2022.9901233","DOIUrl":"https://doi.org/10.1109/EMCEurope51680.2022.9901233","url":null,"abstract":"Inter-laboratory Comparisons (ILC) and Proficiency Testing (PT) are an important and essential tool to provide accurate and reliable results within the permissible uncertainty levels for the EMC test laboratories. Moreover, it is also stipulated by ISO/IEC 17025 that all laboratories must participate in inter-laboratory comparison programs for all types of measurements performed in the laboratory when suitable comparison measurements are commenced. In this study, inter-laboratory comparison results related to the MIL-STD-461F/G RE101 test organized by TÜBİTAK UME in the period of time between August 2020 and November 2020 are presented and the measurement results are evaluated. The comparison measurements were performed by using a RE101 reference device developed by TÜBİTAK UME in the frequency range of 30 Hz – 100 kHz and the stability measurements of the reference device were carried out by TÜBİTAK UME. Ten EMC test laboratories participated in the RE101 comparison measurements and the statistical evaluation of the participating laboratories was made by using the En method according to ISO/IEC 17043.","PeriodicalId":268262,"journal":{"name":"2022 International Symposium on Electromagnetic Compatibility – EMC Europe","volume":"105 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116438505","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":"Noise Source Modeling for Automotive Components Using a Wire-harness Bench","authors":"N. Maeda, Kengo Fukunaga, Keishi Miwa","doi":"10.1109/EMCEurope51680.2022.9900929","DOIUrl":"https://doi.org/10.1109/EMCEurope51680.2022.9900929","url":null,"abstract":"Measurement and calculation methods to obtain the noise-source equivalent-circuit model for automotive components are proposed. The measurement method uses a bench with wire-harness connected to a component layout on a ground plane. The wire-harness load is changed in several levels, and the current and the closely-placed antenna output are measured. The calculation method is constructed based on the circuit equation of the bench and uses a least-squares calculation to process the consecutive measurement in the bench. The appropriate combinations of the condition settings for the measurement combined with the calculation are proposed. For this purpose, a pseudo component is constructed, and its model is produced to evaluate the model performance to estimate the emission when the component is mounted on an actual vehicle.","PeriodicalId":268262,"journal":{"name":"2022 International Symposium on Electromagnetic Compatibility – EMC Europe","volume":"38 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133005562","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}
Pejman Memar, Hasan Habib, Zhao Chen, D. Vanoost, R. Vogt-Ardatjew, Bärbel van den Berg, T. Holvoet, D. Pissoort, J. Boydens
{"title":"Effectiveness of Forward Error Corrections Over Different Wired Communication Channels in Harsh Electromagnetic Environments","authors":"Pejman Memar, Hasan Habib, Zhao Chen, D. Vanoost, R. Vogt-Ardatjew, Bärbel van den Berg, T. Holvoet, D. Pissoort, J. Boydens","doi":"10.1109/EMCEurope51680.2022.9901094","DOIUrl":"https://doi.org/10.1109/EMCEurope51680.2022.9901094","url":null,"abstract":"This paper presents the effectiveness of several forward error corrections in a harsh electromagnetic environment. A harsh electromagnetic environment consists of many reflections and unknowns which could negatively impact the functioning of the operational equipment or systems therein. Accordingly, four printed circuit boards with varying EMC designs are considered to emulate four single-trace communication channels. In addition, based upon the reflective characteristics of harsh electromagnetic environments, a Vibrating Intrinsic Reverberation Chamber is used to produce such an environment. It is found that in such a complex environment, with poor EMC-aware design, the reliability of the data transmission can be substantially decreased. A good EMC-aware design provides far better electromagnetic resiliency under similar conditions. Nevertheless, this design still can be affected under harsher electromagnetic environments. Furthermore, the results show that forward error corrections are able to significantly improve the electromagnetic resiliency of the communication channels. However, forward error corrections are not perfect. There are cases that a code word can get corrupted and turn into another valid code word. This type of error results in undetected corrupted data and is considered as the Achilles' heel of forward error corrections. Therefore, it can be concluded that even with both good electronic design and forward error corrections, the communication channels are not entirely safe. In this regard, other safety practices involving hardware-based and software-based techniques are required to limit the impact of electromagnetic disturbances on safety-critical or mission-critical systems in harsh environments.","PeriodicalId":268262,"journal":{"name":"2022 International Symposium on Electromagnetic Compatibility – EMC Europe","volume":"126 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2022-09-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134126381","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}