Pub Date : 2015-09-14DOI: 10.1109/ISEMC.2015.7256150
L. Li, Jingnan Pan, C. Hwang, Gyuyeong Cho, Hark-Byeong Park, Yaojiang Zhang, J. Fan
This paper presents the measurement validation of reciprocity theorem method for near-field coupling estimation. The overall problem is decomposed into two parts, the first part is called forward problem, and the second part is called the reverse problem. For forward problem, the noise source IC is modelled by physics-based dipole moment model with data obtained from a near-field scanning plane, then the tangential E and H fields on a Huygens's box enclosing the victim antenna are calculated by analytical expression. In reverse problem, the victim RF antenna is modelled in full-wave simulation tool and the tangential E and H field are obtained by simulation. With tangential E and H field obtained in forward problem and reverse problem, the coupled noise power is then estimated by reciprocity theorem. The estimated noise coupling power is compared with measured power at the victim antenna port with IC excited. The difference is within 5dB which is acceptable for engineering practice.
{"title":"Measurement validation for radio-frequency interference estimation by reciprocity theorem","authors":"L. Li, Jingnan Pan, C. Hwang, Gyuyeong Cho, Hark-Byeong Park, Yaojiang Zhang, J. Fan","doi":"10.1109/ISEMC.2015.7256150","DOIUrl":"https://doi.org/10.1109/ISEMC.2015.7256150","url":null,"abstract":"This paper presents the measurement validation of reciprocity theorem method for near-field coupling estimation. The overall problem is decomposed into two parts, the first part is called forward problem, and the second part is called the reverse problem. For forward problem, the noise source IC is modelled by physics-based dipole moment model with data obtained from a near-field scanning plane, then the tangential E and H fields on a Huygens's box enclosing the victim antenna are calculated by analytical expression. In reverse problem, the victim RF antenna is modelled in full-wave simulation tool and the tangential E and H field are obtained by simulation. With tangential E and H field obtained in forward problem and reverse problem, the coupled noise power is then estimated by reciprocity theorem. The estimated noise coupling power is compared with measured power at the victim antenna port with IC excited. The difference is within 5dB which is acceptable for engineering practice.","PeriodicalId":412708,"journal":{"name":"2015 IEEE International Symposium on Electromagnetic Compatibility (EMC)","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123155936","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 : 2015-09-14DOI: 10.1109/ISEMC.2015.7256224
M. E. Gruber, T. Eibert
A hybrid cavity Green's function boundary element method with spectral domain acceleration for the modeling of reverberation chambers is for the first time validated against measurements. The numerical model is optimized for computational speed: geometrical details, such as cables or the stirrer axis, are neglected; the excitation antenna is modeled as a dipole; and losses of the cavity walls and all other objects are approximately handled by complexification of the wavenumber. Despite the coarseness of the model, the numerical results are in good agreement with the measurements for statistical quantities, such as the number of independent stirrer positions.
{"title":"A cavity Green's function boundary element method for the modeling of reverberation chambers: Validation against measurements","authors":"M. E. Gruber, T. Eibert","doi":"10.1109/ISEMC.2015.7256224","DOIUrl":"https://doi.org/10.1109/ISEMC.2015.7256224","url":null,"abstract":"A hybrid cavity Green's function boundary element method with spectral domain acceleration for the modeling of reverberation chambers is for the first time validated against measurements. The numerical model is optimized for computational speed: geometrical details, such as cables or the stirrer axis, are neglected; the excitation antenna is modeled as a dipole; and losses of the cavity walls and all other objects are approximately handled by complexification of the wavenumber. Despite the coarseness of the model, the numerical results are in good agreement with the measurements for statistical quantities, such as the number of independent stirrer positions.","PeriodicalId":412708,"journal":{"name":"2015 IEEE International Symposium on Electromagnetic Compatibility (EMC)","volume":"45 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115198211","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 : 2015-09-14DOI: 10.1109/ISEMC.2015.7256405
Qian Liu, Xiangyang Jiao, Jing Li, V. Khilkevich, J. Drewniak, P. Dixon, Y. Arien
In this study, the parameters of magnetic absorbing materials were measured and used to predict their effectiveness at reducing total radiation power from a heat sink. The parameters of absorbing materials were measured using a transmission line method and fitted using the Debye model. By comparing S-parameters and power loss between a simulated and measured microstrip line, the fitted material parameters were validated. The heat sink model has also been investigated to determine the radiation mitigation with lossy materials.
{"title":"Modeling absorbing materials for EMI mitigation","authors":"Qian Liu, Xiangyang Jiao, Jing Li, V. Khilkevich, J. Drewniak, P. Dixon, Y. Arien","doi":"10.1109/ISEMC.2015.7256405","DOIUrl":"https://doi.org/10.1109/ISEMC.2015.7256405","url":null,"abstract":"In this study, the parameters of magnetic absorbing materials were measured and used to predict their effectiveness at reducing total radiation power from a heat sink. The parameters of absorbing materials were measured using a transmission line method and fitted using the Debye model. By comparing S-parameters and power loss between a simulated and measured microstrip line, the fitted material parameters were validated. The heat sink model has also been investigated to determine the radiation mitigation with lossy materials.","PeriodicalId":412708,"journal":{"name":"2015 IEEE International Symposium on Electromagnetic Compatibility (EMC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115881806","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 : 2015-09-14DOI: 10.1109/ISEMC.2015.7256346
M. Al-Hamid, R. Vick, M. Kruger, P. Wollmann
The application of the stripline for immunity tests is described in the standard DIN ISO 11452-5. In this paper the electrical characteristics of the stripline and the related limitations were determined. At certain frequencies high field strengths were measured beyond the test volume. This limits the application of a stripline for immunity tests, which causes additional stress to the periphery and the EUT. To lower the field strength in these areas, some approaches were evaluated.
条带线在抗扰度测试中的应用在DIN ISO 11452-5标准中有描述。本文确定了带状线的电特性及其限制条件。在某些频率下，测量到的高场强超出了测试体积。这限制了带状线用于免疫测试的应用，这会对外周和EUT造成额外的压力。为了降低这些地区的场强，评估了一些方法。
{"title":"Limitations of a stripline for immunity tests on road vehicle components","authors":"M. Al-Hamid, R. Vick, M. Kruger, P. Wollmann","doi":"10.1109/ISEMC.2015.7256346","DOIUrl":"https://doi.org/10.1109/ISEMC.2015.7256346","url":null,"abstract":"The application of the stripline for immunity tests is described in the standard DIN ISO 11452-5. In this paper the electrical characteristics of the stripline and the related limitations were determined. At certain frequencies high field strengths were measured beyond the test volume. This limits the application of a stripline for immunity tests, which causes additional stress to the periphery and the EUT. To lower the field strength in these areas, some approaches were evaluated.","PeriodicalId":412708,"journal":{"name":"2015 IEEE International Symposium on Electromagnetic Compatibility (EMC)","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128488743","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 : 2015-09-14DOI: 10.1109/ISEMC.2015.7256299
John L. Evans, David W. P. Thomas, S. Greedy
The effects of corona discharge on High-Voltage (HV) surges propagating on a single-wire transmission-line are demonstrated using the Transmission-Line Modeling technique (TLM). In particular, the effects can be demonstrated around a wire represented by short-circuited nodes and also using an Embedded-Wire Symmetrical Condensed Node (EW-SCN). The latter is seen to be ideally suited for adaptation necessary to incorporate such parameters relevant to corona inception. Calculations are based on a mathematical model proposed by Cooray (2000), that uses changes in voltage and charge density to describe corona, and a simplified model for corona simulation proposed by Thang et al (2012) that uses the addition of conductance to a FDTD mesh to obtain the desired result. The adaptations to the EW-SCN remain loyal to the transmission-line equations derived by Cooray and Neethayi (2008) that accurately describe the changes on a line in various representations e.g. dynamic capacitance accompanied with a dynamic conductance.
{"title":"Modeling the influence of corona discharge on High-Voltage surges propagating along Transmission-Lines using TLM","authors":"John L. Evans, David W. P. Thomas, S. Greedy","doi":"10.1109/ISEMC.2015.7256299","DOIUrl":"https://doi.org/10.1109/ISEMC.2015.7256299","url":null,"abstract":"The effects of corona discharge on High-Voltage (HV) surges propagating on a single-wire transmission-line are demonstrated using the Transmission-Line Modeling technique (TLM). In particular, the effects can be demonstrated around a wire represented by short-circuited nodes and also using an Embedded-Wire Symmetrical Condensed Node (EW-SCN). The latter is seen to be ideally suited for adaptation necessary to incorporate such parameters relevant to corona inception. Calculations are based on a mathematical model proposed by Cooray (2000), that uses changes in voltage and charge density to describe corona, and a simplified model for corona simulation proposed by Thang et al (2012) that uses the addition of conductance to a FDTD mesh to obtain the desired result. The adaptations to the EW-SCN remain loyal to the transmission-line equations derived by Cooray and Neethayi (2008) that accurately describe the changes on a line in various representations e.g. dynamic capacitance accompanied with a dynamic conductance.","PeriodicalId":412708,"journal":{"name":"2015 IEEE International Symposium on Electromagnetic Compatibility (EMC)","volume":"49 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128760439","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 : 2015-09-14DOI: 10.1109/ISEMC.2015.7256205
M. Pous, M. Azpúrua, Ferran Silva
In this paper, a measurement procedure to capture properly the electromagnetic fields generated by radiated transient interferences is described. Measuring this type of impulsive noise out of the measurements defined at the EMC standards is essential to acquire the main parameters of the interferences. In order to protect the digital communication systems against radiated transients, the essential measurement requirements, considering the transient characteristics and the communication system parameters, have been established. To accomplish with the requirements, a time-domain measuring procedure combining the sensitivity input stage of an EMI receiver and the capabilities of the oscilloscope for event detection and storage is developed. Moreover, a final post-processing stage has been also defined to obtain the in-phase and quadrature components of the interference as well as the capability to find the APD diagram, which is a powerful tool to analyse the degradation produced to a communication system. Finally, a measurement of radiated transients considering the impact over a RFID system is performed to illustrate the results that can be achieved employing the developed methodology.
{"title":"Radiated transient interferences measurement procedure to evaluate digital communication systems","authors":"M. Pous, M. Azpúrua, Ferran Silva","doi":"10.1109/ISEMC.2015.7256205","DOIUrl":"https://doi.org/10.1109/ISEMC.2015.7256205","url":null,"abstract":"In this paper, a measurement procedure to capture properly the electromagnetic fields generated by radiated transient interferences is described. Measuring this type of impulsive noise out of the measurements defined at the EMC standards is essential to acquire the main parameters of the interferences. In order to protect the digital communication systems against radiated transients, the essential measurement requirements, considering the transient characteristics and the communication system parameters, have been established. To accomplish with the requirements, a time-domain measuring procedure combining the sensitivity input stage of an EMI receiver and the capabilities of the oscilloscope for event detection and storage is developed. Moreover, a final post-processing stage has been also defined to obtain the in-phase and quadrature components of the interference as well as the capability to find the APD diagram, which is a powerful tool to analyse the degradation produced to a communication system. Finally, a measurement of radiated transients considering the impact over a RFID system is performed to illustrate the results that can be achieved employing the developed methodology.","PeriodicalId":412708,"journal":{"name":"2015 IEEE International Symposium on Electromagnetic Compatibility (EMC)","volume":"137 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122909912","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 : 2015-09-14DOI: 10.1109/ISEMC.2015.7256193
C. Jullien, J. Genoulaz, M. Dunand
An analysis of new protective socks for extremities of twisted pair, from a predesign with numerical aspect and an experimental point of view to an experimental validation, is proposed. The numerical model is built as a succession of uniform transmission lines. Crosstalks between these twisted pair and single wire inside the bundle are measured and computed. In order to save cable from crosstalk impact, a new protection is developed and validated for twisted pairs.
{"title":"Extremity crosstalk protection analysis on twisted cables","authors":"C. Jullien, J. Genoulaz, M. Dunand","doi":"10.1109/ISEMC.2015.7256193","DOIUrl":"https://doi.org/10.1109/ISEMC.2015.7256193","url":null,"abstract":"An analysis of new protective socks for extremities of twisted pair, from a predesign with numerical aspect and an experimental point of view to an experimental validation, is proposed. The numerical model is built as a succession of uniform transmission lines. Crosstalks between these twisted pair and single wire inside the bundle are measured and computed. In order to save cable from crosstalk impact, a new protection is developed and validated for twisted pairs.","PeriodicalId":412708,"journal":{"name":"2015 IEEE International Symposium on Electromagnetic Compatibility (EMC)","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128142530","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 : 2015-09-14DOI: 10.1109/ISEMC.2015.7256206
J. Mclean, R. Sutton, K. Takizawa, Akihiro Sato, Masataka Midori, Yuki Naito
The Van Veen loop is intrinsically well adapted to time-domain measurements of net magnetic dipole moment. That is, the system comes very close to preserving the shape of the time-domain waveform of the net or residual magnetic dipole moment produced by the DUT. This property makes the Van Veen Loop very useful in the characterization of magnetic field wireless power transfer systems in which short-time-scale features such as ringing in inverter and rectifier circuits are present in the extraneous magnetic field. We present two modifications to the internal circuitry which further improve the time-domain performance of the system to the extent that it approaches having a distortionless transfer function. Finally, we present a physical explanation for the mechanism by which the time-domain performance is improved.
{"title":"The time-domain performance of the Van Veen loop","authors":"J. Mclean, R. Sutton, K. Takizawa, Akihiro Sato, Masataka Midori, Yuki Naito","doi":"10.1109/ISEMC.2015.7256206","DOIUrl":"https://doi.org/10.1109/ISEMC.2015.7256206","url":null,"abstract":"The Van Veen loop is intrinsically well adapted to time-domain measurements of net magnetic dipole moment. That is, the system comes very close to preserving the shape of the time-domain waveform of the net or residual magnetic dipole moment produced by the DUT. This property makes the Van Veen Loop very useful in the characterization of magnetic field wireless power transfer systems in which short-time-scale features such as ringing in inverter and rectifier circuits are present in the extraneous magnetic field. We present two modifications to the internal circuitry which further improve the time-domain performance of the system to the extent that it approaches having a distortionless transfer function. Finally, we present a physical explanation for the mechanism by which the time-domain performance is improved.","PeriodicalId":412708,"journal":{"name":"2015 IEEE International Symposium on Electromagnetic Compatibility (EMC)","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128160476","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 : 2015-09-14DOI: 10.1109/ISEMC.2015.7256226
Guang-Xiao Luo, E. Li, Xing-Chang Wei, C. Xiang
A novel method based on equivalent circuit is presented to model and analyze the EBG(Electromagnetic Band Gap) structure of power planes. The planar EBG structure is divided into cells and connecting parts, the equivalent circuit is developed by combining the integral equation multi-port networks and the micro-strip transmission lines. The stop bandgap of the EBG structure is obtained by the circuit simulation. The proposed method is validated by both measurement and full-wave simulation, where the proposed EBG structure shows the stop bandgap at 0.7-3 GHz with less than -50 dB insertion loss.
{"title":"Modelling of planar EBG structure by using equivalent circuit method","authors":"Guang-Xiao Luo, E. Li, Xing-Chang Wei, C. Xiang","doi":"10.1109/ISEMC.2015.7256226","DOIUrl":"https://doi.org/10.1109/ISEMC.2015.7256226","url":null,"abstract":"A novel method based on equivalent circuit is presented to model and analyze the EBG(Electromagnetic Band Gap) structure of power planes. The planar EBG structure is divided into cells and connecting parts, the equivalent circuit is developed by combining the integral equation multi-port networks and the micro-strip transmission lines. The stop bandgap of the EBG structure is obtained by the circuit simulation. The proposed method is validated by both measurement and full-wave simulation, where the proposed EBG structure shows the stop bandgap at 0.7-3 GHz with less than -50 dB insertion loss.","PeriodicalId":412708,"journal":{"name":"2015 IEEE International Symposium on Electromagnetic Compatibility (EMC)","volume":"54 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116930308","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 : 2015-09-14DOI: 10.1109/ISEMC.2015.7256209
R. Gunnarsson, M. Backstrom
A simple and low-cost solution for protecting sensitive equipment located behind an aperture in an enclosure, such as a ventilation or display panel, is to use a metallic wire-mesh to cover the aperture(s). At high frequencies, where the aperture transmission coefficient is close to one, the transmission properties depend almost exclusively on the wire-mesh properties. Analytic models for the transmission coefficient of periodic (infinite) wire-meshes can then be used to provide a good approximation of the transmission properties of the wire-mesh covered aperture. At lower frequencies, however, the situation is more complex, since the transmission properties depend also on the size and shape of the aperture. An analytic model for the transmission cross section of wire-mesh covered apertures is proposed in this paper. At low frequencies this is based on a combination of the transmission cross section of a single wire-mesh cell calculated using the magnetic polarizability and a power relation, derived from antenna theory, relating the power transmitted through an array of apertures to the power transmitted through a single aperture. At intermediate frequencies the model assumes a frequency dependence found heuristically through numerical simulations. The proposed model provides results in very good agreement with numerical results over a wide range of frequencies and wire-meshes.
{"title":"A heuristic model for the transmission cross section of wire-mesh covered apertures","authors":"R. Gunnarsson, M. Backstrom","doi":"10.1109/ISEMC.2015.7256209","DOIUrl":"https://doi.org/10.1109/ISEMC.2015.7256209","url":null,"abstract":"A simple and low-cost solution for protecting sensitive equipment located behind an aperture in an enclosure, such as a ventilation or display panel, is to use a metallic wire-mesh to cover the aperture(s). At high frequencies, where the aperture transmission coefficient is close to one, the transmission properties depend almost exclusively on the wire-mesh properties. Analytic models for the transmission coefficient of periodic (infinite) wire-meshes can then be used to provide a good approximation of the transmission properties of the wire-mesh covered aperture. At lower frequencies, however, the situation is more complex, since the transmission properties depend also on the size and shape of the aperture. An analytic model for the transmission cross section of wire-mesh covered apertures is proposed in this paper. At low frequencies this is based on a combination of the transmission cross section of a single wire-mesh cell calculated using the magnetic polarizability and a power relation, derived from antenna theory, relating the power transmitted through an array of apertures to the power transmitted through a single aperture. At intermediate frequencies the model assumes a frequency dependence found heuristically through numerical simulations. The proposed model provides results in very good agreement with numerical results over a wide range of frequencies and wire-meshes.","PeriodicalId":412708,"journal":{"name":"2015 IEEE International Symposium on Electromagnetic Compatibility (EMC)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2015-09-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114816990","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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