Pub Date : 2005-10-03DOI: 10.1109/ISEMC.2005.1513594
B. Archambeault, S. Connor
This paper demonstrates the effect of decoupling capacitor distance on the amount of EMI noise created at an IC's power pin. As the distance is increased, the amplitude of the noise is increased if the capacitor has been attached to the printed circuit board (PCB) with a low inductance connection. This effect is most apparent when the dielectric thickness of the PCB is greater. Furthermore, this paper demonstrates the need to do this type of analysis in the time domain and not the frequency domain
{"title":"The effect of decoupling capacitor distance on printed circuit boards using both frequency and time domain analysis","authors":"B. Archambeault, S. Connor","doi":"10.1109/ISEMC.2005.1513594","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513594","url":null,"abstract":"This paper demonstrates the effect of decoupling capacitor distance on the amount of EMI noise created at an IC's power pin. As the distance is increased, the amplitude of the noise is increased if the capacitor has been attached to the printed circuit board (PCB) with a low inductance connection. This effect is most apparent when the dielectric thickness of the PCB is greater. Furthermore, this paper demonstrates the need to do this type of analysis in the time domain and not the frequency domain","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"165 1","pages":"650-654"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76934638","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 : 2005-10-03DOI: 10.1109/ISEMC.2005.1513565
K. Armstrong
Certain kinds of equipment must maintain sufficiently low risks to users and third parties over their entire lifecycles, despite at least one fault, and despite foreseeable misuse. Where electromagnetic interference (EMI) could foreseeably have an effect on such equipment, it will need to maintain an adequate level of electromagnetic (EM) immunity over its lifecycle. This is the concern of 'EMC for functional safety'. The EM environment that such equipment could experience over its whole lifecycle can be very different from that tested by standard immunity tests used for EMC compliance. IEMI Intentional EMI - could also be an issue. The physical and climatic environments, plus the wear and tear and misuse that such equipment is subjected to over its lifecycle can cause circuit EM behavior to alter, and can degrade the performance of EM mitigation measures. This paper outlines an approach to specifying the "lifecycle environment" for such equipment, as an aid to safe design and appropriate verification testing. Although this paper focuses on safety concerns, the lifecycle EM and physical environment issues discussed here are also important for high-reliability, mission-critical and legal metrology equipment, to help control financial or security risks. Designing and testing to achieve adequate EMC for functional safety will be covered in future papers.
{"title":"Specifying lifecycle electromagnetic and physical environments - to help design and test for EMC for functional safety","authors":"K. Armstrong","doi":"10.1109/ISEMC.2005.1513565","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513565","url":null,"abstract":"Certain kinds of equipment must maintain sufficiently low risks to users and third parties over their entire lifecycles, despite at least one fault, and despite foreseeable misuse. Where electromagnetic interference (EMI) could foreseeably have an effect on such equipment, it will need to maintain an adequate level of electromagnetic (EM) immunity over its lifecycle. This is the concern of 'EMC for functional safety'. The EM environment that such equipment could experience over its whole lifecycle can be very different from that tested by standard immunity tests used for EMC compliance. IEMI Intentional EMI - could also be an issue. The physical and climatic environments, plus the wear and tear and misuse that such equipment is subjected to over its lifecycle can cause circuit EM behavior to alter, and can degrade the performance of EM mitigation measures. This paper outlines an approach to specifying the \"lifecycle environment\" for such equipment, as an aid to safe design and appropriate verification testing. Although this paper focuses on safety concerns, the lifecycle EM and physical environment issues discussed here are also important for high-reliability, mission-critical and legal metrology equipment, to help control financial or security risks. Designing and testing to achieve adequate EMC for functional safety will be covered in future papers.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"61 32 1","pages":"495-500 Vol. 2"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"77369336","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 : 2005-10-03DOI: 10.1109/ISEMC.2005.1513530
A. Weinschrott
Objective of the design of a new snap ferrite is the increasing of the impedance and respectively the improvement of the EMI suppression in higher frequency ranges and in the case of DC superposition.
新型快速铁氧体的设计目的是提高阻抗，并分别改善高频范围和直流叠加情况下的电磁干扰抑制。
{"title":"New measurement method for high frequency cable mounted ferrites","authors":"A. Weinschrott","doi":"10.1109/ISEMC.2005.1513530","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513530","url":null,"abstract":"Objective of the design of a new snap ferrite is the increasing of the impedance and respectively the improvement of the EMI suppression in higher frequency ranges and in the case of DC superposition.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"10 1","pages":"312-314 Vol. 2"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73940180","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 : 2005-10-03DOI: 10.1109/ISEMC.2005.1513641
Lin Xiaoyu, Chen Shixiu, Xie Qi-jia, Xia Chang-zheng, Sun Youlin
Characteristics of electromagnetic wave radiated from corona discharge on hardware has been studied. Experiment results and analysis show that the physical model of corona discharge on hardware can be simulated by a short dipole antenna and the electrical field above ground is a superposition field due to ground reflection.
{"title":"Experiment study on radiation characteristics of corona discharge on hardware","authors":"Lin Xiaoyu, Chen Shixiu, Xie Qi-jia, Xia Chang-zheng, Sun Youlin","doi":"10.1109/ISEMC.2005.1513641","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513641","url":null,"abstract":"Characteristics of electromagnetic wave radiated from corona discharge on hardware has been studied. Experiment results and analysis show that the physical model of corona discharge on hardware can be simulated by a short dipole antenna and the electrical field above ground is a superposition field due to ground reflection.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"77 1","pages":"840-843 Vol. 3"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"75608094","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 : 2005-10-03DOI: 10.1109/ISEMC.2005.1513514
G. Antonini, A. Scogna, A. Orlandi, C. Ritona, A. Duffy
This paper is concerned with the usability of the feature selective validation (FSV) method for comparing validation data. It addresses how it can help in the validation process and how the resulting validation data can be interpreted. It does this by considering two different case studies. The first considers two approaches to modeling electric fields in an equipment rack, and the second compares a Spice model for coupled circuit boards with a reference full wave model. The paper concludes that while the single value summary metrics are helpful to give an overall level of agreement, the detailed point-by-point information is very helpful when considering how to improve the models or measurements involved.
{"title":"Applications of FSV to EMC and SI data","authors":"G. Antonini, A. Scogna, A. Orlandi, C. Ritona, A. Duffy","doi":"10.1109/ISEMC.2005.1513514","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513514","url":null,"abstract":"This paper is concerned with the usability of the feature selective validation (FSV) method for comparing validation data. It addresses how it can help in the validation process and how the resulting validation data can be interpreted. It does this by considering two different case studies. The first considers two approaches to modeling electric fields in an equipment rack, and the second compares a Spice model for coupled circuit boards with a reference full wave model. The paper concludes that while the single value summary metrics are helpful to give an overall level of agreement, the detailed point-by-point information is very helpful when considering how to improve the models or measurements involved.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"22 1","pages":"278-283 Vol. 1"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74733681","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 : 2005-10-03DOI: 10.1109/ISEMC.2005.1513649
P. Ankarson, J. Carlsson, Yueqiang Liu
The influence of a car structure on the radiation pattern from a dual band planar inverted F-antenna (PIFA) resonant in the 900 and 1800 mobile communication bands has been studied. Numerical simulations using FDTD, FIT and a combination of FEM-FDTD have been used for analyzing the PIFA mounted on a car as well as mounted on infinite and finite sized ground planes. The computed return loss and gain patterns have been compared with measurements for a fabricated PIFA. The results show that the car structure has a large impact on the gain pattern. The achieved agreement between computed and measured gain shows that FIIM-FDTD and FIT programs are suitable for analyzing small and complicated antennas placed on much larger structures, such as a car.
{"title":"Numericlal study of a PIFA mounted on a car compared to measurements","authors":"P. Ankarson, J. Carlsson, Yueqiang Liu","doi":"10.1109/ISEMC.2005.1513649","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513649","url":null,"abstract":"The influence of a car structure on the radiation pattern from a dual band planar inverted F-antenna (PIFA) resonant in the 900 and 1800 mobile communication bands has been studied. Numerical simulations using FDTD, FIT and a combination of FEM-FDTD have been used for analyzing the PIFA mounted on a car as well as mounted on infinite and finite sized ground planes. The computed return loss and gain patterns have been compared with measurements for a fabricated PIFA. The results show that the car structure has a large impact on the gain pattern. The achieved agreement between computed and measured gain shows that FIIM-FDTD and FIT programs are suitable for analyzing small and complicated antennas placed on much larger structures, such as a car.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"15 1","pages":"878-882 Vol. 3"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"76277273","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 : 2005-10-03DOI: 10.1109/ISEMC.2005.1513497
M. Badic, M. Marinescu, L. Aciu
The theory of shielding was developed mostly on the basis of transmission lines model, using the Schelkunoff-Schulz isomorphism. The paper uses the transmission line theory but abandons the isomorphism that led to theory vs. experiments mismatch. The new model assumes transversal capacitive coupling between the sample under test and the coaxial TEM measuring cell. Thus, occurrence of higher modes inside the tested material at high frequencies is avoided, and experimental curves IL=F(/spl omega/) validate theoretical predictions.
{"title":"Electromagnetic characterization of conductive magnetic/non-magnetic shielding materials","authors":"M. Badic, M. Marinescu, L. Aciu","doi":"10.1109/ISEMC.2005.1513497","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513497","url":null,"abstract":"The theory of shielding was developed mostly on the basis of transmission lines model, using the Schelkunoff-Schulz isomorphism. The paper uses the transmission line theory but abandons the isomorphism that led to theory vs. experiments mismatch. The new model assumes transversal capacitive coupling between the sample under test and the coaxial TEM measuring cell. Thus, occurrence of higher modes inside the tested material at high frequencies is avoided, and experimental curves IL=F(/spl omega/) validate theoretical predictions.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"12 1","pages":"185-189 Vol. 1"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"73472613","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 : 2005-10-03DOI: 10.1109/ISEMC.2005.1513489
J. Dawson, T. Konefal, M. Robinson, A. Marvin, S. Porter, L. Chirwa
The statistics of the fields within an enclosure illuminated by an external field via an aperture have been investigated using Monte-Carlo methods. The field statistics in the volume of the enclosure are shown to correspond to the Rayleigh statistics found in properly functioning reverberation chambers when a sufficiently large number of modes is excited. The variation of field behaviour near the conducting walls is investigated. The deviation of the field statistics from the Rayleigh distribution as the number of excited modes falls is also investigated.
{"title":"Field statistics in an enclosure with an aperture - effect of Q-factor and number of modes","authors":"J. Dawson, T. Konefal, M. Robinson, A. Marvin, S. Porter, L. Chirwa","doi":"10.1109/ISEMC.2005.1513489","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513489","url":null,"abstract":"The statistics of the fields within an enclosure illuminated by an external field via an aperture have been investigated using Monte-Carlo methods. The field statistics in the volume of the enclosure are shown to correspond to the Rayleigh statistics found in properly functioning reverberation chambers when a sufficiently large number of modes is excited. The variation of field behaviour near the conducting walls is investigated. The deviation of the field statistics from the Rayleigh distribution as the number of excited modes falls is also investigated.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"263 1","pages":"141-146 Vol. 1"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"83923265","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 : 2005-10-03DOI: 10.1109/ISEMC.2005.1513495
H. Suenaga, O. Shibata, Y. Saito
In this paper, a new termination circuit that consists of two common-mode chokes for a differential transmission line is proposed. It dramatically reduces common-mode noise while maintaining the transmission performance of a differential-mode signal. The noise-reduction effect of the circuit is explained here theoretically; it was also verified experimentally using an evaluation board.
{"title":"Termination with reverse-connected common-mode choke (T-ReCC) for a differential transmission line","authors":"H. Suenaga, O. Shibata, Y. Saito","doi":"10.1109/ISEMC.2005.1513495","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513495","url":null,"abstract":"In this paper, a new termination circuit that consists of two common-mode chokes for a differential transmission line is proposed. It dramatically reduces common-mode noise while maintaining the transmission performance of a differential-mode signal. The noise-reduction effect of the circuit is explained here theoretically; it was also verified experimentally using an evaluation board.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"121 1","pages":"175-178 Vol. 1"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85846373","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 : 2005-10-03DOI: 10.1109/ISEMC.2005.1513661
J. G. Kraemer
This paper presents a common-sense approach for specifying and characterizing cable/connector systems used for high-speed data interfaces between defense/aerospace equipment, most specifically equipment using off-the-shelf non-defense/aerospace interfaces. The approach described examines the cable/connector system by itself to specify and characterize its ability to impede the transfer of interference, prevent emissions of the desired signal, and to meet required signal integrity attributes. Cable/connector system specification wording and verification methods are provided.
{"title":"Specifying and characterizing cable/connector systems for high-speed interfaces in defense/aerospace systems","authors":"J. G. Kraemer","doi":"10.1109/ISEMC.2005.1513661","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513661","url":null,"abstract":"This paper presents a common-sense approach for specifying and characterizing cable/connector systems used for high-speed data interfaces between defense/aerospace equipment, most specifically equipment using off-the-shelf non-defense/aerospace interfaces. The approach described examines the cable/connector system by itself to specify and characterize its ability to impede the transfer of interference, prevent emissions of the desired signal, and to meet required signal integrity attributes. Cable/connector system specification wording and verification methods are provided.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"79 1","pages":"943-948 Vol. 3"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"86833930","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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