Pub Date : 2012-05-21DOI: 10.1109/APEMC.2012.6237946
A. Larsson, T. Hurtig
The technological development together with new innovative ideas make challenging future applications of pulsed power possible. These applications are now being implemented on military platform concepts such as the all-electric combat vehicle (AECV). As a result, the electric environment is drastically changed and new EMI issues emerge. In this paper, we address the electric parameters of the pulsed-power systems used for these new applications. It is found that the inclusion of ultra-wide band high-power microwave generators and electric armour into an AECV may well be the two most challenging emerging technologies as seen from an EMC perspective.
{"title":"Electromagnetic environment of future military vehicles","authors":"A. Larsson, T. Hurtig","doi":"10.1109/APEMC.2012.6237946","DOIUrl":"https://doi.org/10.1109/APEMC.2012.6237946","url":null,"abstract":"The technological development together with new innovative ideas make challenging future applications of pulsed power possible. These applications are now being implemented on military platform concepts such as the all-electric combat vehicle (AECV). As a result, the electric environment is drastically changed and new EMI issues emerge. In this paper, we address the electric parameters of the pulsed-power systems used for these new applications. It is found that the inclusion of ultra-wide band high-power microwave generators and electric armour into an AECV may well be the two most challenging emerging technologies as seen from an EMC perspective.","PeriodicalId":300639,"journal":{"name":"2012 Asia-Pacific Symposium on Electromagnetic Compatibility","volume":"2013 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121753147","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 : 2012-05-21DOI: 10.1109/APEMC.2012.6237813
A. Maeda, H. Shimanoe, M. Sudo, S. Kobayashi
We developed a conical dipole antenna that operates in the frequency range of 1 GHz to 6 GHz as a broadband antenna. In this paper we describe site attenuation measurements in the 1 GHz to 6 GHz frequency range using this antenna for the CSA (Classical/Conventional Site Attenuation) and NSA (Normalized Site Attenuation) methods, and we verified that measuring site attenuation using this conical dipole antenna is an appropriate method for evaluating radiated emission test sites above 1 GHz. Site attenuation is more sensitive for detecting unwanted reflection waves than Site VSWR. Therefore site attenuation is superior to Site VSWR for use in site validity evaluation. Site attenuation in the 30 MHz to 1000 MHz range has been the standard method with logical underpinnings used for more than 20 years and is recognized by CISPR and many countries as the national standard. The method proposed above permits the same method of evaluation of the suitability of radiated emission test sites to be extended to the 1 GHz to 6 GHz frequency range; coherence and continuity are maintained, which we believe to be highly significant.
{"title":"Extension of site attenuation for radiated emission test site evaluation above 1 GHz","authors":"A. Maeda, H. Shimanoe, M. Sudo, S. Kobayashi","doi":"10.1109/APEMC.2012.6237813","DOIUrl":"https://doi.org/10.1109/APEMC.2012.6237813","url":null,"abstract":"We developed a conical dipole antenna that operates in the frequency range of 1 GHz to 6 GHz as a broadband antenna. In this paper we describe site attenuation measurements in the 1 GHz to 6 GHz frequency range using this antenna for the CSA (Classical/Conventional Site Attenuation) and NSA (Normalized Site Attenuation) methods, and we verified that measuring site attenuation using this conical dipole antenna is an appropriate method for evaluating radiated emission test sites above 1 GHz. Site attenuation is more sensitive for detecting unwanted reflection waves than Site VSWR. Therefore site attenuation is superior to Site VSWR for use in site validity evaluation. Site attenuation in the 30 MHz to 1000 MHz range has been the standard method with logical underpinnings used for more than 20 years and is recognized by CISPR and many countries as the national standard. The method proposed above permits the same method of evaluation of the suitability of radiated emission test sites to be extended to the 1 GHz to 6 GHz frequency range; coherence and continuity are maintained, which we believe to be highly significant.","PeriodicalId":300639,"journal":{"name":"2012 Asia-Pacific Symposium on Electromagnetic Compatibility","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130041336","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 : 2012-05-21DOI: 10.1109/APEMC.2012.6237982
T. Steinecke, M. Bischoff, F. Brandl, C. Hermann, F. Klotz, F. Müller, W. Pfaff, M. Unger
A well defined IC test setup and IC configuration is mandatory to provide EMC-related test reports of different vendors comparable and allows an objective product selection for end-users. Based on well-established international standards, the “BISS” (from “Bosch/Infineon/Siemens Specification”) working group maintains the “Generic IC EMC Test Specification”, which serves as a reference manual on how to setup repeatable electromagnetic, pulse and system-ESD tests, resulting in comparable test reports. Conducted and radiated emission and immunity tests are already well established; pulse immunity and ESD robustness measurements based on system-level tests are expected to be released in the second edition of the “Generic IC EMC Test Specification” during the first half of 2012. The paper provides an overview of this test specification and its practical application.
{"title":"Generic IC EMC Test Specification","authors":"T. Steinecke, M. Bischoff, F. Brandl, C. Hermann, F. Klotz, F. Müller, W. Pfaff, M. Unger","doi":"10.1109/APEMC.2012.6237982","DOIUrl":"https://doi.org/10.1109/APEMC.2012.6237982","url":null,"abstract":"A well defined IC test setup and IC configuration is mandatory to provide EMC-related test reports of different vendors comparable and allows an objective product selection for end-users. Based on well-established international standards, the “BISS” (from “Bosch/Infineon/Siemens Specification”) working group maintains the “Generic IC EMC Test Specification”, which serves as a reference manual on how to setup repeatable electromagnetic, pulse and system-ESD tests, resulting in comparable test reports. Conducted and radiated emission and immunity tests are already well established; pulse immunity and ESD robustness measurements based on system-level tests are expected to be released in the second edition of the “Generic IC EMC Test Specification” during the first half of 2012. The paper provides an overview of this test specification and its practical application.","PeriodicalId":300639,"journal":{"name":"2012 Asia-Pacific Symposium on Electromagnetic Compatibility","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134243849","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 : 2012-05-21DOI: 10.1109/APEMC.2012.6237952
Yu-ichi Hayashi, K. Matsuda, T. Mizuki, H. Sone
A loosened connector causes an increase in electromagnetic radiation when electric devices operate in high-frequency bands. To investigate the mechanisms generating electromagnetic radiation due to a loose contact in a connector, we estimate high-frequency circuit elements at the contact boundary of a loosened connector. On the basis of this estimation, we show the relationship between high-frequency circuit elements and the electromagnetic radiation from electric devices through experiments.
{"title":"Investigation on the effect of parasitic inductance at connector contact boundary on electromagnetic radiation","authors":"Yu-ichi Hayashi, K. Matsuda, T. Mizuki, H. Sone","doi":"10.1109/APEMC.2012.6237952","DOIUrl":"https://doi.org/10.1109/APEMC.2012.6237952","url":null,"abstract":"A loosened connector causes an increase in electromagnetic radiation when electric devices operate in high-frequency bands. To investigate the mechanisms generating electromagnetic radiation due to a loose contact in a connector, we estimate high-frequency circuit elements at the contact boundary of a loosened connector. On the basis of this estimation, we show the relationship between high-frequency circuit elements and the electromagnetic radiation from electric devices through experiments.","PeriodicalId":300639,"journal":{"name":"2012 Asia-Pacific Symposium on Electromagnetic Compatibility","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134003943","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 : 2012-05-21DOI: 10.1109/APEMC.2012.6237818
X. L. Chen, V. De Santis, N. Chavannes, N. Kuster
The study of magnetic stimulation of the human brain has been an on-going research topic since the 1980s. To achieve a better understanding of the cerebral stimulation, it is necessary to estimate the spatial distribution and peak magnitude of the induced electric field in the brain. By utilizing a high resolution anatomical model and a numerical technique based on quasi-static approximation, this study provides a state-of-the-art estimation of the in situ electric field distribution in an adult brain when undergoing transcranial magnetic stimulation. Coil designs such as figure-8 and 4-leaf-clover are employed in the analysis. It is demonstrated that the brain regions which are more likely to be stimulated by the respective coil design can be better estimated by employing a realistic anatomical model than a homogeneous model. It is revealed that the location of the maximum in situ electric field does not necessarily coincide with the location of the maximum magnetic flux (directly below the coil). Instead, the site of stimulation is significantly influenced by the design of the coil and the coil position.
{"title":"Computation of in situ electric field in the brain during transcranial magnetic stimulation","authors":"X. L. Chen, V. De Santis, N. Chavannes, N. Kuster","doi":"10.1109/APEMC.2012.6237818","DOIUrl":"https://doi.org/10.1109/APEMC.2012.6237818","url":null,"abstract":"The study of magnetic stimulation of the human brain has been an on-going research topic since the 1980s. To achieve a better understanding of the cerebral stimulation, it is necessary to estimate the spatial distribution and peak magnitude of the induced electric field in the brain. By utilizing a high resolution anatomical model and a numerical technique based on quasi-static approximation, this study provides a state-of-the-art estimation of the in situ electric field distribution in an adult brain when undergoing transcranial magnetic stimulation. Coil designs such as figure-8 and 4-leaf-clover are employed in the analysis. It is demonstrated that the brain regions which are more likely to be stimulated by the respective coil design can be better estimated by employing a realistic anatomical model than a homogeneous model. It is revealed that the location of the maximum in situ electric field does not necessarily coincide with the location of the maximum magnetic flux (directly below the coil). Instead, the site of stimulation is significantly influenced by the design of the coil and the coil position.","PeriodicalId":300639,"journal":{"name":"2012 Asia-Pacific Symposium on Electromagnetic Compatibility","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131610689","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 : 2012-05-21DOI: 10.1109/APEMC.2012.6237961
W. Kodate, Y. Endo, M. Yamaguchi
Performance of magnetic thin-film is evaluated as a candidate for on-chip noise suppressor. Miniature loops coils implemented on a 90 nm design test element group (TEG) chip are used as the noise transmitter and receiver. Differential transmission parameter Sdd21 is evaluated as a measure of inductive noise intra-decoupling. Magnetic film is useful for frequency selective noise decoupler. The coupling is supported most at the ferromagnetic resonance (FMR) frequency, which is deviated from its intrinsic frequency and the degree of deviation can be calculated by using characteristic length. These results demonstrate that the proposed method is useful to characterize the IC chip level noise suppressor in the GHz range.
{"title":"On-chip intra decoupling measurements for integrated magnetic thin film","authors":"W. Kodate, Y. Endo, M. Yamaguchi","doi":"10.1109/APEMC.2012.6237961","DOIUrl":"https://doi.org/10.1109/APEMC.2012.6237961","url":null,"abstract":"Performance of magnetic thin-film is evaluated as a candidate for on-chip noise suppressor. Miniature loops coils implemented on a 90 nm design test element group (TEG) chip are used as the noise transmitter and receiver. Differential transmission parameter Sdd21 is evaluated as a measure of inductive noise intra-decoupling. Magnetic film is useful for frequency selective noise decoupler. The coupling is supported most at the ferromagnetic resonance (FMR) frequency, which is deviated from its intrinsic frequency and the degree of deviation can be calculated by using characteristic length. These results demonstrate that the proposed method is useful to characterize the IC chip level noise suppressor in the GHz range.","PeriodicalId":300639,"journal":{"name":"2012 Asia-Pacific Symposium on Electromagnetic Compatibility","volume":"55 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133363619","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 : 2012-05-21DOI: 10.1109/APEMC.2012.6237895
Shih-Yi Yuan, Jiun-Jia Huang, S. Liao, Chia-Yuan Hsu, Ting-Wei Yeh
This paper proposes a method which can find dynamic characteristics of internal impedance (IntZ) and internal current activity (IntCA) in a microcontroller (uC) for IC-EMC model. The dynamics of IntZ/IntCA can be estimated without any prior netlist information. The dynamics of IntZ/IntCA are represented by a set of internal “impulse response” functions. This paper shows that both of the IntZ and IntCA are intrinsically dynamic. This method can be further used for software-related IC-EMC modelling and IC-EMC simulation.
{"title":"Dynamic internal impedance and current activity estimation for software-related IC-EMC model","authors":"Shih-Yi Yuan, Jiun-Jia Huang, S. Liao, Chia-Yuan Hsu, Ting-Wei Yeh","doi":"10.1109/APEMC.2012.6237895","DOIUrl":"https://doi.org/10.1109/APEMC.2012.6237895","url":null,"abstract":"This paper proposes a method which can find dynamic characteristics of internal impedance (IntZ) and internal current activity (IntCA) in a microcontroller (uC) for IC-EMC model. The dynamics of IntZ/IntCA can be estimated without any prior netlist information. The dynamics of IntZ/IntCA are represented by a set of internal “impulse response” functions. This paper shows that both of the IntZ and IntCA are intrinsically dynamic. This method can be further used for software-related IC-EMC modelling and IC-EMC simulation.","PeriodicalId":300639,"journal":{"name":"2012 Asia-Pacific Symposium on Electromagnetic Compatibility","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133423238","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 : 2012-05-21DOI: 10.1109/APEMC.2012.6237851
De-Cao Yang, Xing-Chang Wei
In this paper, we calculate the input impedance of the power and ground planes by using the method of Green functions. The geometry is equivalent to a two-dimensional transverse magnetic problem. A two-dimensional Green's function, the image Green function, is employed to simulate the noise propagation between the power and ground planes. The equivalence between the image Green's function and the conventional mode Green's function is validated. Furthermore, the convergence and accuracy of the mode Green's function and image Green's function at different frequency bands are analyzed. Finally, through the comparison with the full-wave method, the accuracy and efficiency of the proposed imaging method are validated.
{"title":"Impedance calculation of power and ground planes by using imaging methods","authors":"De-Cao Yang, Xing-Chang Wei","doi":"10.1109/APEMC.2012.6237851","DOIUrl":"https://doi.org/10.1109/APEMC.2012.6237851","url":null,"abstract":"In this paper, we calculate the input impedance of the power and ground planes by using the method of Green functions. The geometry is equivalent to a two-dimensional transverse magnetic problem. A two-dimensional Green's function, the image Green function, is employed to simulate the noise propagation between the power and ground planes. The equivalence between the image Green's function and the conventional mode Green's function is validated. Furthermore, the convergence and accuracy of the mode Green's function and image Green's function at different frequency bands are analyzed. Finally, through the comparison with the full-wave method, the accuracy and efficiency of the proposed imaging method are validated.","PeriodicalId":300639,"journal":{"name":"2012 Asia-Pacific Symposium on Electromagnetic Compatibility","volume":"71 1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131693743","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 : 2012-05-21DOI: 10.1109/APEMC.2012.6237816
Agustiar, Weishan Soh, K. See, Kangrong Li
Electromagnetic interference (EMI) from mobile phones on hearing aids are investigated. Different operating modes of the hearing aid have different impact on the immunity of the device. An experimental study will be carried out to understand the impact of EMI filter on the compliance of the hearing aid under the operating modes.
{"title":"EMI filter design to improve electromagnetic immunity of hearing aid devices","authors":"Agustiar, Weishan Soh, K. See, Kangrong Li","doi":"10.1109/APEMC.2012.6237816","DOIUrl":"https://doi.org/10.1109/APEMC.2012.6237816","url":null,"abstract":"Electromagnetic interference (EMI) from mobile phones on hearing aids are investigated. Different operating modes of the hearing aid have different impact on the immunity of the device. An experimental study will be carried out to understand the impact of EMI filter on the compliance of the hearing aid under the operating modes.","PeriodicalId":300639,"journal":{"name":"2012 Asia-Pacific Symposium on Electromagnetic Compatibility","volume":"50 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115822413","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 : 2012-05-21DOI: 10.1109/APEMC.2012.6238020
M. Chu, Boon Toon Loi
As modern railways deploy more complex and sensitive equipment, railway systems are increasingly vulnerable to electromagnetic interference. Effective Electromagnetic Compatibility (EMC) management is an important integral part of project management in ensuring successful delivery of railway projects. This paper highlights some challenges faced by Land Transport Authority (LTA) in the management of EMC during the DTL project design stage. To effectively address and resolve these challenges, strategy and methodology for future new projects design stage EMC management are revised and adopted.
{"title":"Electromagnetic compatibility design management challenges on Downtown Line (DTL) project","authors":"M. Chu, Boon Toon Loi","doi":"10.1109/APEMC.2012.6238020","DOIUrl":"https://doi.org/10.1109/APEMC.2012.6238020","url":null,"abstract":"As modern railways deploy more complex and sensitive equipment, railway systems are increasingly vulnerable to electromagnetic interference. Effective Electromagnetic Compatibility (EMC) management is an important integral part of project management in ensuring successful delivery of railway projects. This paper highlights some challenges faced by Land Transport Authority (LTA) in the management of EMC during the DTL project design stage. To effectively address and resolve these challenges, strategy and methodology for future new projects design stage EMC management are revised and adopted.","PeriodicalId":300639,"journal":{"name":"2012 Asia-Pacific Symposium on Electromagnetic Compatibility","volume":"75 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2012-05-21","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114551916","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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