Pub Date : 2018-07-01DOI: 10.1109/EMCSI.2018.8495186
H. Tran, T. Le, B. Pejcinovic, Jeffrey T Brown, R. Doneker, K. G. Thompson
The development of a novel microwave absorber material utilizing mm-length carbon fibers (CF) is reported. The CF are deposited electrostatically using the flocking process. Micron-sized ferrite beads are then deposited on tips of carbon fibers. The material is lightweight with density of ~0.32 g/in2and its thickness can vary from one to several millimeters. Its absorption is broadband and tunable with respect to frequency response and amount of absorption. The absorber was characterized in X-band using NRL arch measurement in an anechoic chamber. The material exhibited broadband attenuation ranging from around −10 dB at the edges of X-band to a peak of −46 dB at 11.1 GHz. Absorber complex permittivity and permeability were extracted using waveguide measurements. Electromagnetic simulations utilizing extracted parameters were compared with measured data and good agreement was found. Overall extraction process was successfully verified by comparison with a known commercial absorber material. The absorber performance compares favorably with existing solutions.
{"title":"Characterization of Novel Magnetically Loaded Flocked Carbon Fiber Microwave Absorber","authors":"H. Tran, T. Le, B. Pejcinovic, Jeffrey T Brown, R. Doneker, K. G. Thompson","doi":"10.1109/EMCSI.2018.8495186","DOIUrl":"https://doi.org/10.1109/EMCSI.2018.8495186","url":null,"abstract":"The development of a novel microwave absorber material utilizing mm-length carbon fibers (CF) is reported. The CF are deposited electrostatically using the flocking process. Micron-sized ferrite beads are then deposited on tips of carbon fibers. The material is lightweight with density of ~0.32 g/in2and its thickness can vary from one to several millimeters. Its absorption is broadband and tunable with respect to frequency response and amount of absorption. The absorber was characterized in X-band using NRL arch measurement in an anechoic chamber. The material exhibited broadband attenuation ranging from around −10 dB at the edges of X-band to a peak of −46 dB at 11.1 GHz. Absorber complex permittivity and permeability were extracted using waveguide measurements. Electromagnetic simulations utilizing extracted parameters were compared with measured data and good agreement was found. Overall extraction process was successfully verified by comparison with a known commercial absorber material. The absorber performance compares favorably with existing solutions.","PeriodicalId":120342,"journal":{"name":"2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)","volume":"52 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127567756","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 : 2018-07-01DOI: 10.1109/EMCSI.2018.8495306
Lei Yan, Weidong Zhang, Zhang Zhaohua, Weidong Shi, P. Kang, Lei Shi
To analyze disturbance voltage of secondary cables due to a circuit breaker ground fault in UHVDC convertor substation, this paper established an equivalent model according to the real size of ground grid as well as secondary cable, and carried out spot-measuring. For the purpose of suppressing interference on cores caused by ground potential rising, it's better to ensure armor grounded in both ends, meanwhile, to make shielding sheath grounded only in sensitive devices.
{"title":"Research on Disturbance Voltage of Secondary Cables Due to a Circuit Breaker Ground Fault in UHVDC Convertor Substation","authors":"Lei Yan, Weidong Zhang, Zhang Zhaohua, Weidong Shi, P. Kang, Lei Shi","doi":"10.1109/EMCSI.2018.8495306","DOIUrl":"https://doi.org/10.1109/EMCSI.2018.8495306","url":null,"abstract":"To analyze disturbance voltage of secondary cables due to a circuit breaker ground fault in UHVDC convertor substation, this paper established an equivalent model according to the real size of ground grid as well as secondary cable, and carried out spot-measuring. For the purpose of suppressing interference on cores caused by ground potential rising, it's better to ensure armor grounded in both ends, meanwhile, to make shielding sheath grounded only in sensitive devices.","PeriodicalId":120342,"journal":{"name":"2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)","volume":"60 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133677304","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 : 2018-07-01DOI: 10.1109/EMCSI.2018.8495392
L. Nguyen, M. Caruso, M. Bergstrom, D. McGaw
This paper describes a proof-of-concept hybrid EMP shelter with a subfloor of reinforced conductive concrete together with a modular steel clamp together shielding system. Test results demonstrate that such hybrid shielding structures can provide EMP protection per MIL-STD 188-125-1 requirements.
{"title":"Hybrid Conductive Concrete Structures for EMP Protection of Resiliency Critical Infrastructure Facilities","authors":"L. Nguyen, M. Caruso, M. Bergstrom, D. McGaw","doi":"10.1109/EMCSI.2018.8495392","DOIUrl":"https://doi.org/10.1109/EMCSI.2018.8495392","url":null,"abstract":"This paper describes a proof-of-concept hybrid EMP shelter with a subfloor of reinforced conductive concrete together with a modular steel clamp together shielding system. Test results demonstrate that such hybrid shielding structures can provide EMP protection per MIL-STD 188-125-1 requirements.","PeriodicalId":120342,"journal":{"name":"2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)","volume":"115 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134646426","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 : 2018-07-01DOI: 10.1109/EMCSI.2018.8495305
D. Petrov, K. Rozanov, M. Koledintseva
The use of a coaxial air-filled line as a test fixture for measuring complex permittivity and permeability often shows odd resonance-like behavior of material parameters as functions of frequency. This effect is typically either ascribed to the half-wavelength resonance at the sample length, or erroneously misinterpreted as intrinsic resonance behavior of the material. However, as is shown in this paper, such behavior can be attributed to excitation of the higher-order modes on the surface of the sample resulting in resonance absorption of electromagnetic energy in the test fixture. Herein, analytical, numerical, and experimental results show that there can actually be a significant impact of higher-order modes in a coaxial line on the extracted constitutive material parameters of samples.
{"title":"Influence of Higher-order Modes in Coaxial Waveguide on Measurements of Material Parameters","authors":"D. Petrov, K. Rozanov, M. Koledintseva","doi":"10.1109/EMCSI.2018.8495305","DOIUrl":"https://doi.org/10.1109/EMCSI.2018.8495305","url":null,"abstract":"The use of a coaxial air-filled line as a test fixture for measuring complex permittivity and permeability often shows odd resonance-like behavior of material parameters as functions of frequency. This effect is typically either ascribed to the half-wavelength resonance at the sample length, or erroneously misinterpreted as intrinsic resonance behavior of the material. However, as is shown in this paper, such behavior can be attributed to excitation of the higher-order modes on the surface of the sample resulting in resonance absorption of electromagnetic energy in the test fixture. Herein, analytical, numerical, and experimental results show that there can actually be a significant impact of higher-order modes in a coaxial line on the extracted constitutive material parameters of samples.","PeriodicalId":120342,"journal":{"name":"2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)","volume":"10 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134315579","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 : 2018-07-01DOI: 10.1109/EMCSI.2018.8495419
Bichen Chen, Junda Wang, Y. S. Cao, Muqi Ouyang, Yansheng Wang, Shuai Jin, G. Shen, Xusheng Liu, Xiping Peng, J. Fan
The integrated crosstalk noise (ICN) has been widely used as an alternative to the insertion crosstalk ratio (ICR) for channel crosstalk evaluation in the IEEE 802.3ba standard. In this work, the differential ICN mitigation scheme by using idea of orthogonality is implemented in two adjacent differential pairs first. In the full pin map area of SerDes channel, new pin map patterns based on such scheme are prosed and compared with the conventional pan map patterns. The new pin maps mitigate the differential ICN drastically, yet maintain the G:s ratio. A preliminary study is conducted on fan-out trace routing to maintain the benefit from new pin map patterns.
{"title":"Differential Integrated Crosstalk Noise (ICN) Mitigation in the Pin Field Area of SerDes Channel","authors":"Bichen Chen, Junda Wang, Y. S. Cao, Muqi Ouyang, Yansheng Wang, Shuai Jin, G. Shen, Xusheng Liu, Xiping Peng, J. Fan","doi":"10.1109/EMCSI.2018.8495419","DOIUrl":"https://doi.org/10.1109/EMCSI.2018.8495419","url":null,"abstract":"The integrated crosstalk noise (ICN) has been widely used as an alternative to the insertion crosstalk ratio (ICR) for channel crosstalk evaluation in the IEEE 802.3ba standard. In this work, the differential ICN mitigation scheme by using idea of orthogonality is implemented in two adjacent differential pairs first. In the full pin map area of SerDes channel, new pin map patterns based on such scheme are prosed and compared with the conventional pan map patterns. The new pin maps mitigate the differential ICN drastically, yet maintain the G:s ratio. A preliminary study is conducted on fan-out trace routing to maintain the benefit from new pin map patterns.","PeriodicalId":120342,"journal":{"name":"2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)","volume":"109 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134417846","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 : 2018-07-01DOI: 10.1109/EMCSI.2018.8495199
L. Sandrolini, David W. P. Thomas, M. Sumner, C. Rose
In this paper the conducted emissions generated by a DC/DC power converter system in the 2–150 kHz frequency range are studied in both time and frequency domains. Measurement and evaluation of the conducted emissions are carried out to assess the level of the emissions of the system with reference to the existing standards and to point out which measurement settings may have an impact on the measurement results. A prototype of a DC/DC battery charger for electric vehicles was used in the experiments. The results show that the DC/DC power converter system may not result in being compliant to some of the existing standards in the frequency range 2–150 kHz and that measurement settings may affect significantly the evaluation of the conducted emissions_
{"title":"Measurement and Evaluation of the Conducted Emissions of a DC/DC Power Converter in the Frequency Range 2–150 kHz","authors":"L. Sandrolini, David W. P. Thomas, M. Sumner, C. Rose","doi":"10.1109/EMCSI.2018.8495199","DOIUrl":"https://doi.org/10.1109/EMCSI.2018.8495199","url":null,"abstract":"In this paper the conducted emissions generated by a DC/DC power converter system in the 2–150 kHz frequency range are studied in both time and frequency domains. Measurement and evaluation of the conducted emissions are carried out to assess the level of the emissions of the system with reference to the existing standards and to point out which measurement settings may have an impact on the measurement results. A prototype of a DC/DC battery charger for electric vehicles was used in the experiments. The results show that the DC/DC power converter system may not result in being compliant to some of the existing standards in the frequency range 2–150 kHz and that measurement settings may affect significantly the evaluation of the conducted emissions_","PeriodicalId":120342,"journal":{"name":"2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131668084","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 : 2018-07-01DOI: 10.1109/EMCSI.2018.8495442
I. Nicolae
In three-phase systems, ensembles of loads in different connections across phases (when considering their number and power-related weights), can produce significant non-symmetries, affecting the voltages from the connection point.
{"title":"Workshop WED-PM-5 Behavior of a Collection of Computers With Respect to the Three-Phase Supplying Network","authors":"I. Nicolae","doi":"10.1109/EMCSI.2018.8495442","DOIUrl":"https://doi.org/10.1109/EMCSI.2018.8495442","url":null,"abstract":"In three-phase systems, ensembles of loads in different connections across phases (when considering their number and power-related weights), can produce significant non-symmetries, affecting the voltages from the connection point.","PeriodicalId":120342,"journal":{"name":"2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)","volume":"32 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133935921","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 : 2018-07-01DOI: 10.1109/EMCSI.2018.8495292
R. Perez
Design principles concerning the use of FPGA are of particular importance in aerospace applications since the neglect of such design principles can cause catastrophic effects in aerospace system, as it will be explainedin this paper. FPGA design rules such as power conditioning and signal integrity for properly interfacing high speed FPGA with its interface circuits are discussed in this paper as it relates to aerospace systems. Signal integrity to avoid crosstalk within a FPGA has not been a great concern because most of the attention over the years had been on signal integrity at the PCB level. However, this paper shows a real example of crosstalk within a FPGA in an aerospace application.
{"title":"Power and Signal Integrity Findings in a FPGA Layout for an Aerospace Application","authors":"R. Perez","doi":"10.1109/EMCSI.2018.8495292","DOIUrl":"https://doi.org/10.1109/EMCSI.2018.8495292","url":null,"abstract":"Design principles concerning the use of FPGA are of particular importance in aerospace applications since the neglect of such design principles can cause catastrophic effects in aerospace system, as it will be explainedin this paper. FPGA design rules such as power conditioning and signal integrity for properly interfacing high speed FPGA with its interface circuits are discussed in this paper as it relates to aerospace systems. Signal integrity to avoid crosstalk within a FPGA has not been a great concern because most of the attention over the years had been on signal integrity at the PCB level. However, this paper shows a real example of crosstalk within a FPGA in an aerospace application.","PeriodicalId":120342,"journal":{"name":"2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133383394","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 : 2018-07-01DOI: 10.1109/EMCSI.2018.8495173
F. Ling, Kevin Cai, Bidyut Sen
Crosstalk analysis for high speed PCB design becomes more and more important due to the high data rate and tightly coupled routing. Traditional circuit-based analysis can not meet the accuracy demand. Three-dimensional (3D) full-wave electromagnetic solver is required to capture the complex 3D PCB environment and the frequency-dependent phenomena. However it is prohibitively expensive to simulate the practical large board cases and the resultant tabulated S-parameter cannot be directly used to quantify the crosstalk level. This paper introduces a novel hybrid solver techniques with improved speed and accuracy. The new crosstalk metrics to quantify the crosstalk level are also developed by post-processing S-parameter. Combining these two techniques allows designers to achieve full board crosstalk in a few hours as planned intended with using the tool, which significantly reduces the post-layout review time, allows layout optimization and ensures a timely sign-off.
{"title":"Fast Full Board Crosstalk Scan for Signal Integrity Sign-Off for High Speed PCB Designs","authors":"F. Ling, Kevin Cai, Bidyut Sen","doi":"10.1109/EMCSI.2018.8495173","DOIUrl":"https://doi.org/10.1109/EMCSI.2018.8495173","url":null,"abstract":"Crosstalk analysis for high speed PCB design becomes more and more important due to the high data rate and tightly coupled routing. Traditional circuit-based analysis can not meet the accuracy demand. Three-dimensional (3D) full-wave electromagnetic solver is required to capture the complex 3D PCB environment and the frequency-dependent phenomena. However it is prohibitively expensive to simulate the practical large board cases and the resultant tabulated S-parameter cannot be directly used to quantify the crosstalk level. This paper introduces a novel hybrid solver techniques with improved speed and accuracy. The new crosstalk metrics to quantify the crosstalk level are also developed by post-processing S-parameter. Combining these two techniques allows designers to achieve full board crosstalk in a few hours as planned intended with using the tool, which significantly reduces the post-layout review time, allows layout optimization and ensures a timely sign-off.","PeriodicalId":120342,"journal":{"name":"2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)","volume":"1202 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"117341124","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 : 2018-07-01DOI: 10.1109/EMCSI.2018.8495239
B. Narayanasamy, F. Luo, Yongbin Chu
Passive EMI filters occupy significant volume in a power converter. Active EMI Filters (AEF) are a means to reduce the volume of passive filter components. It is essential to identify the boundaries within which the AEF could be designed and the possible volume reduction that is achievable. This work involves the modeling and stability analysis of Feedback Voltage Sense Current Cancellation (VSCC) Active EMI Filters. Type of applications that benefit from using voltage sensing over current sensing for is identified. An example of a non-PFC AC-DC converter is considered. Noise sensing networks comprising high voltage capacitors and high pass filter networks are designed for sensing noise. The overall filter implementation is modeled, and stability analysis is carried out. Suitable compensation networks are designed to make the filter viable. Major bottlenecks that limit the maximum attenuation are identified and general guidelines for the application of Feedback VSCC topology are proposed.
{"title":"Modeling and Stability Analysis of Voltage Sensing based Differential Mode Active EMI Filters for AC-DC Power Converters","authors":"B. Narayanasamy, F. Luo, Yongbin Chu","doi":"10.1109/EMCSI.2018.8495239","DOIUrl":"https://doi.org/10.1109/EMCSI.2018.8495239","url":null,"abstract":"Passive EMI filters occupy significant volume in a power converter. Active EMI Filters (AEF) are a means to reduce the volume of passive filter components. It is essential to identify the boundaries within which the AEF could be designed and the possible volume reduction that is achievable. This work involves the modeling and stability analysis of Feedback Voltage Sense Current Cancellation (VSCC) Active EMI Filters. Type of applications that benefit from using voltage sensing over current sensing for is identified. An example of a non-PFC AC-DC converter is considered. Noise sensing networks comprising high voltage capacitors and high pass filter networks are designed for sensing noise. The overall filter implementation is modeled, and stability analysis is carried out. Suitable compensation networks are designed to make the filter viable. Major bottlenecks that limit the maximum attenuation are identified and general guidelines for the application of Feedback VSCC topology are proposed.","PeriodicalId":120342,"journal":{"name":"2018 IEEE Symposium on Electromagnetic Compatibility, Signal Integrity and Power Integrity (EMC, SI & PI)","volume":"14 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2018-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"120999832","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}
京公网安备 11010802042870号
京ICP备2023020795号-1
扫码关注我们
求助内容：
应助结果提醒方式：