首页 > 最新文献

2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.最新文献

英文 中文
FDTD analysis of symmetric TEM cell 对称瞬变电磁体的时域有限差分分析
Pub Date : 2005-10-03 DOI: 10.1109/ISEMC.2005.1513571
C. Rostamzadeh, B. Archambeault, S. Connor
Traditional measurements of the electric field distribution inside a symmetric square TEM cell can be tedious, difficult and subject to errors. In this paper we evaluate a numerical FDTD method for prediction of spatial electric field distribution within an empty TEM cell. FDTD results compare favorably with measured data, hence providing an excellent tool to replace measurement methods and avoid errors. Emphasis is laid on the basic idea of field perturbation introduced by external field probes and objects, thus promoting FDTD computational techniques as an alternative but accurate, valid and a suitable tool.
传统的测量对称方形TEM单元内电场分布的方法繁琐、困难且容易产生误差。本文研究了一种用于预测空瞬变电磁体空间电场分布的数值时域有限差分方法。时域有限差分结果与实测数据比较有利,因此提供了替代测量方法和避免误差的优秀工具。重点介绍了由外场探测器和物体引入的场摄动的基本思想,从而促进了时域有限差分计算技术作为一种准确、有效和合适的替代工具。
{"title":"FDTD analysis of symmetric TEM cell","authors":"C. Rostamzadeh, B. Archambeault, S. Connor","doi":"10.1109/ISEMC.2005.1513571","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513571","url":null,"abstract":"Traditional measurements of the electric field distribution inside a symmetric square TEM cell can be tedious, difficult and subject to errors. In this paper we evaluate a numerical FDTD method for prediction of spatial electric field distribution within an empty TEM cell. FDTD results compare favorably with measured data, hence providing an excellent tool to replace measurement methods and avoid errors. Emphasis is laid on the basic idea of field perturbation introduced by external field probes and objects, thus promoting FDTD computational techniques as an alternative but accurate, valid and a suitable tool.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"2015 1","pages":"525-529 Vol. 2"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"74023861","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}
引用次数: 7
Use of Huygens source excitation in a MoM surface-current EFIE formulation 惠更斯源激励在MoM表面电流EFIE配方中的应用
Pub Date : 2005-10-03 DOI: 10.1109/ISEMC.2005.1513640
D. Leugner, H. Bruns, H. Singer
In this paper the equivalence theorem (Huygens principle) is applied in conjunction with a method of moments (MoM) surface current formulation in order to improve the computation of a certain class of problems arising in the area of EMC. Of special interest is the effect of holes and slots upon the forming of the interior fields of enclosures. For an effective aperture treatment based on a MoM EFIE formulation the electric MoM currents and the electric equivalent sources (Huygens sources) have to be galvanically connected in order to satisfy the continuity equation at the interface. It is observed that one can circumvent instabilities of the EFIE at resonances leading to false interior fields by replacing the original excitation by Huygens sources in the aperture. In a first standard MoM computation the current distribution of the structure is gained. Then the original excitation is replaced by Huygens currents in the aperture plane. A second MoM computation is necessary to compute the internal current distribution. Such a step-by-step EFIE procedure is computationally more efficient than a double-layer current approach. The numerical effort is reduced by almost a factor of four.
本文将等价定理(惠更斯原理)与矩量法(MoM)表面电流公式相结合,改进了电磁兼容领域中一类问题的计算。特别令人感兴趣的是孔和槽对外壳内部场形成的影响。为了实现基于MoM EFIE公式的有效孔径处理,为了满足界面处的连续性方程,电MoM电流和电等效源(惠更斯源)必须电连接。我们观察到,用孔径内的惠更斯源代替原激励,可以避免EFIE在共振处导致假内场的不稳定性。在第一个标准MoM计算中,得到了结构的电流分布。然后在孔径平面上用惠更斯电流代替原激励。为了计算内部电流分布,需要进行第二次MoM计算。这种一步一步的EFIE程序在计算上比双层电流方法更有效。数值上的努力几乎减少了四分之一。
{"title":"Use of Huygens source excitation in a MoM surface-current EFIE formulation","authors":"D. Leugner, H. Bruns, H. Singer","doi":"10.1109/ISEMC.2005.1513640","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513640","url":null,"abstract":"In this paper the equivalence theorem (Huygens principle) is applied in conjunction with a method of moments (MoM) surface current formulation in order to improve the computation of a certain class of problems arising in the area of EMC. Of special interest is the effect of holes and slots upon the forming of the interior fields of enclosures. For an effective aperture treatment based on a MoM EFIE formulation the electric MoM currents and the electric equivalent sources (Huygens sources) have to be galvanically connected in order to satisfy the continuity equation at the interface. It is observed that one can circumvent instabilities of the EFIE at resonances leading to false interior fields by replacing the original excitation by Huygens sources in the aperture. In a first standard MoM computation the current distribution of the structure is gained. Then the original excitation is replaced by Huygens currents in the aperture plane. A second MoM computation is necessary to compute the internal current distribution. Such a step-by-step EFIE procedure is computationally more efficient than a double-layer current approach. The numerical effort is reduced by almost a factor of four.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"27 1","pages":"834-839 Vol. 3"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79337967","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}
引用次数: 2
Effect of common mode transients on front end rectifiers in offline SMPS 离线SMPS中前端整流器共模瞬变的影响
Pub Date : 2005-10-03 DOI: 10.1109/ISEMC.2005.1513537
M. Sudheer, M. Gunasekaran
This paper presents the effect of common mode (CM) transient on a typical front-end rectifier of offline power electronic equipment like switched mode power supply (SMPS) and near unity power factor (NUPF) converters. They undergo mode conversion to differential mode (DM) transients. The magnitude, rise time and fall time of such DM transients depend on the coupling capacitance to ground, rise time and position of occurrence of CM transients on AC mains voltage. This DM transient may damage sensitive components and may cause malfunctioning of the ICs used in the SMPS/NUPF circuitry. It will also cause interference in their output voltages. Connecting RC snubbers across the diode bridge can mitigate them. Simulation results, mathematical analysis and experimental results presented here are in close conformity.
本文介绍了共模暂态对开关电源(SMPS)和近单位功率因数(NUPF)变换器等离线电力电子设备的典型前端整流器的影响。它们经历模式转换到差分模式(DM)瞬态。这种DM瞬态的幅度、上升时间和下降时间取决于对地耦合电容、交流市电电压上CM瞬态发生的上升时间和位置。这种DM瞬态可能会损坏敏感元件,并可能导致SMPS/NUPF电路中使用的ic故障。它还会对它们的输出电压造成干扰。通过二极管桥连接RC缓冲器可以减轻它们。本文给出的仿真结果、数学分析结果与实验结果吻合较好。
{"title":"Effect of common mode transients on front end rectifiers in offline SMPS","authors":"M. Sudheer, M. Gunasekaran","doi":"10.1109/ISEMC.2005.1513537","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513537","url":null,"abstract":"This paper presents the effect of common mode (CM) transient on a typical front-end rectifier of offline power electronic equipment like switched mode power supply (SMPS) and near unity power factor (NUPF) converters. They undergo mode conversion to differential mode (DM) transients. The magnitude, rise time and fall time of such DM transients depend on the coupling capacitance to ground, rise time and position of occurrence of CM transients on AC mains voltage. This DM transient may damage sensitive components and may cause malfunctioning of the ICs used in the SMPS/NUPF circuitry. It will also cause interference in their output voltages. Connecting RC snubbers across the diode bridge can mitigate them. Simulation results, mathematical analysis and experimental results presented here are in close conformity.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"16 1","pages":"346-349 Vol. 2"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85362694","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}
引用次数: 1
An optical feeding antenna with a wider bandwidth than conventional spherical dipole antennas 一种比传统的球形偶极子天线带宽更宽的光学馈电天线
Pub Date : 2005-10-03 DOI: 10.1109/ISEMC.2005.1513483
S. Itakura, S. Nabekura, Y. Okano, M. Tokuda
We constructed a wideband, optical feeding antenna that combines elements of a hemispherical antenna and a biconical antenna. Measurement of the radiated electrical field and comparison of the values with ones calculated using the finite difference time domain (FDTD) method showed that the calculated values for the frequency characteristics and the directivities of the radiated electric field agreed very well with the measured ones. The measured frequency characteristics of the radiated electric field were almost flat from 1 to 8 GHz. The measured electrical field levels were from 90 to 100 dB/spl mu/V/m.
我们构建了一个宽带光学馈电天线,它结合了半球形天线和双锥形天线的元素。对辐射电场进行了测量,并与时域有限差分法(FDTD)计算结果进行了比较,结果表明,辐射电场的频率特性和方向性的计算值与实测值吻合得很好。测量到的辐射电场的频率特性在1 ~ 8 GHz范围内几乎是平坦的。测量的电场水平为90 ~ 100 dB/spl mu/V/m。
{"title":"An optical feeding antenna with a wider bandwidth than conventional spherical dipole antennas","authors":"S. Itakura, S. Nabekura, Y. Okano, M. Tokuda","doi":"10.1109/ISEMC.2005.1513483","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513483","url":null,"abstract":"We constructed a wideband, optical feeding antenna that combines elements of a hemispherical antenna and a biconical antenna. Measurement of the radiated electrical field and comparison of the values with ones calculated using the finite difference time domain (FDTD) method showed that the calculated values for the frequency characteristics and the directivities of the radiated electric field agreed very well with the measured ones. The measured frequency characteristics of the radiated electric field were almost flat from 1 to 8 GHz. The measured electrical field levels were from 90 to 100 dB/spl mu/V/m.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"22 1","pages":"107-111 Vol. 1"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"81624109","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}
引用次数: 0
Feasibility of new nanolayered transparent thin films for active shielding of low frequency magnetic field 新型纳米透明薄膜主动屏蔽低频磁场的可行性
Pub Date : 2005-10-03 DOI: 10.1109/ISEMC.2005.1513653
M. D'amore, M. S. Sarto, A. Tamburrano, F. Sarto
The feasibility of low-frequency magnetic field active shielding by using transparent metals is investigated. The basics of transparent metals and of the nanotechnology exploited to realize a test sample made of silver and titanium oxide are provided. The design of the shield is carried out by evaluating the maximum current capability of the transparent metal as function of the working temperature in order to assess the performance of the proposed new active shielding technique, which avoids the use of bulk conductors for the current flow. The sensitivity analysis of the efficiency of the transparent active shield proposed is performed by numerical simulations, considering a 2D-test enclosure with an optical aperture, excited by an inner a.c. current source at 50 Hz.
研究了利用透明金属进行低频磁场主动屏蔽的可行性。提供了透明金属的基本原理和用于实现由银和氧化钛制成的测试样品的纳米技术。屏蔽的设计是通过评估透明金属的最大电流能力作为工作温度的函数来进行的,以评估所提出的新的有源屏蔽技术的性能,该技术避免了使用大块导体进行电流流动。通过数值模拟对透明有源屏蔽效率的灵敏度进行了分析,考虑了一个带有光学孔径的2d测试外壳,由一个50 Hz的内部交流电流源激励。
{"title":"Feasibility of new nanolayered transparent thin films for active shielding of low frequency magnetic field","authors":"M. D'amore, M. S. Sarto, A. Tamburrano, F. Sarto","doi":"10.1109/ISEMC.2005.1513653","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513653","url":null,"abstract":"The feasibility of low-frequency magnetic field active shielding by using transparent metals is investigated. The basics of transparent metals and of the nanotechnology exploited to realize a test sample made of silver and titanium oxide are provided. The design of the shield is carried out by evaluating the maximum current capability of the transparent metal as function of the working temperature in order to assess the performance of the proposed new active shielding technique, which avoids the use of bulk conductors for the current flow. The sensitivity analysis of the efficiency of the transparent active shield proposed is performed by numerical simulations, considering a 2D-test enclosure with an optical aperture, excited by an inner a.c. current source at 50 Hz.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"132 1","pages":"900-905 Vol. 3"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"79637430","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}
引用次数: 12
Investigation of radiation source using disc-cone antenna with optical/electrical converter operating from 1 to 10 GHz 1 ~ 10ghz光/电转换器圆盘锥天线辐射源的研究
Pub Date : 2005-10-03 DOI: 10.1109/ISEMC.2005.1513550
T. Nishimura, N. Kuwabara, F. Amemiya
The recent progress of radio wave communication and high-speed electrical equipment has brought the need for radiation sources operating at more than 1 GHz to evaluate EMC test facilities and shielding characteristics. This paper proposes a radiation source using a disc-cone antenna with an O/E converter. A wire grid model construction based on a triangle was studied to maintain the wire density constantly, and a laser diode with an electroabsorption (EA) device was used as the E/O converter. The radiation source was constructed, and the characteristics were measured in an anechoic chamber from 0.3 to 10 GHz. The investigation indicated that the calculation accuracy was improved to employ the wire grid model based on a triangle, and the deviation between the calculated value and the measured value is within /spl plusmn/3 dB from 1 to 10 GHz. This also indicated that the deviation of the gain is within /spl plusmn/5 dB from 1 to 10 GHz and the maximum radiated field is more than 0.1 V/m at a distance of 1 m. Using the radiation source, the shielding effect of the PC case was investigated. The results indicated that the shielding effect decreased in proportion with the increase in frequency, and a careful design is important for maintaining the shielding effect in this frequency range.
无线电波通信和高速电气设备的最新进展带来了对工作在1 GHz以上的辐射源的需求,以评估EMC测试设施和屏蔽特性。本文提出了一种带O/E转换器的圆盘锥天线辐射源。采用带电吸收器件的激光二极管作为E/O变换器,研究了基于三角形的导线网格模型构建,以保持导线密度恒定。搭建了辐射源,在0.3 ~ 10 GHz的消声室内测量了辐射源的特性。研究表明,采用基于三角形的线网格模型提高了计算精度,在1 ~ 10 GHz范围内,计算值与实测值的偏差在/spl plusmn/ 3db以内。这也表明,在1 ~ 10 GHz范围内,增益偏差在/spl plusmn/5 dB以内,在1 m距离处的最大辐射场大于0.1 V/m。利用该辐射源,研究了PC机外壳的屏蔽效果。结果表明,屏蔽效果随频率的增加成比例降低,在该频率范围内保持屏蔽效果需要精心设计。
{"title":"Investigation of radiation source using disc-cone antenna with optical/electrical converter operating from 1 to 10 GHz","authors":"T. Nishimura, N. Kuwabara, F. Amemiya","doi":"10.1109/ISEMC.2005.1513550","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513550","url":null,"abstract":"The recent progress of radio wave communication and high-speed electrical equipment has brought the need for radiation sources operating at more than 1 GHz to evaluate EMC test facilities and shielding characteristics. This paper proposes a radiation source using a disc-cone antenna with an O/E converter. A wire grid model construction based on a triangle was studied to maintain the wire density constantly, and a laser diode with an electroabsorption (EA) device was used as the E/O converter. The radiation source was constructed, and the characteristics were measured in an anechoic chamber from 0.3 to 10 GHz. The investigation indicated that the calculation accuracy was improved to employ the wire grid model based on a triangle, and the deviation between the calculated value and the measured value is within /spl plusmn/3 dB from 1 to 10 GHz. This also indicated that the deviation of the gain is within /spl plusmn/5 dB from 1 to 10 GHz and the maximum radiated field is more than 0.1 V/m at a distance of 1 m. Using the radiation source, the shielding effect of the PC case was investigated. The results indicated that the shielding effect decreased in proportion with the increase in frequency, and a careful design is important for maintaining the shielding effect in this frequency range.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"18 1","pages":"414-419 Vol. 2"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"85053233","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}
引用次数: 1
The integrated error against log frequency (IELF) method for CEM validation 基于对数频率积分误差(IELF)的CEM验证方法
Pub Date : 2005-10-03 DOI: 10.1109/ISEMC.2005.1513517
R. Simpson, C.R. Jones, I. Macdiarmid, A. Duffy, D. Coleby
Data with a high feature density is common within EMC measurements and modeling, particularly in the complex and substantially overmoded environments found in aerospace EMC environments. Comparison of experimental and modeled data based on visual assessment of the graphical representation of the data is common and requires both extensive experience and detailed system knowledge in order to be able to interpret the comparisons with confidence. However, in circumstances where a quantification of this comparison is called for, such as when sharing results across partner organizations, obtaining a single representative figure of merit is challenging. The integrated error against log frequency (IELF) method was developed to provide this quantification. It is based on the view that the most significant aspect of the data to be compared is a function of the difference between the two traces being compared, particularly when the individual features are difficult to discriminate. This paper presents the IELF method and demonstrates its potential.
具有高特征密度的数据在EMC测量和建模中很常见,特别是在航空航天EMC环境中复杂且大量过度建模的环境中。基于对数据图形表示的视觉评估对实验数据和建模数据进行比较是很常见的,这需要丰富的经验和详细的系统知识,以便能够有信心地解释比较。然而,在需要对这种比较进行量化的情况下,例如在跨合作伙伴组织共享结果时,获得一个具有代表性的优点数字是具有挑战性的。为了提供这种量化,开发了对数频率积分误差(IELF)方法。它基于这样一种观点,即待比较数据的最重要方面是被比较的两条轨迹之间差异的函数,特别是当单个特征难以区分时。本文介绍了IELF方法并展示了它的潜力。
{"title":"The integrated error against log frequency (IELF) method for CEM validation","authors":"R. Simpson, C.R. Jones, I. Macdiarmid, A. Duffy, D. Coleby","doi":"10.1109/ISEMC.2005.1513517","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513517","url":null,"abstract":"Data with a high feature density is common within EMC measurements and modeling, particularly in the complex and substantially overmoded environments found in aerospace EMC environments. Comparison of experimental and modeled data based on visual assessment of the graphical representation of the data is common and requires both extensive experience and detailed system knowledge in order to be able to interpret the comparisons with confidence. However, in circumstances where a quantification of this comparison is called for, such as when sharing results across partner organizations, obtaining a single representative figure of merit is challenging. The integrated error against log frequency (IELF) method was developed to provide this quantification. It is based on the view that the most significant aspect of the data to be compared is a function of the difference between the two traces being compared, particularly when the individual features are difficult to discriminate. This paper presents the IELF method and demonstrates its potential.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"1 1","pages":"296-300 Vol. 1"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"80460133","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}
引用次数: 18
An automatic algorithm for equivalent circuit extraction from noisy frequency responses 基于噪声频率响应的等效电路自动提取算法
Pub Date : 2005-10-03 DOI: 10.1109/ISEMC.2005.1513493
S. Grivet-Talocia, M. Bandinu, F. Canavero
This paper presents a fully automatic algorithm for the extraction of equivalent circuits from noisy frequency responses. The application area involves the generation of SPICE-ready macromodels for critical interconnects for signal integrity characterizations. Direct measurements are often employed to obtain a characterization of a given interconnect structure, leading to its frequency-dependent scattering responses. The proposed technique processes these responses and outputs an equivalent circuit. The algorithm is based on a modification of the well-known vector fitting scheme, which has now become a standard tool in EMC and SI studies. The presented improvements focus on robustness to noise, which is always present in measured data, and on automatic order estimation. These issues are addressed via an automatic detection of any spurious poles due to the noise, which are hard relocated in order to maximize the model accuracy. Several application examples are presented to illustrate the excellent capabilities of the new fitting scheme.
本文提出了一种从噪声频率响应中自动提取等效电路的算法。应用领域涉及为信号完整性表征的关键互连生成spice就绪宏模型。直接测量通常用于获得给定互连结构的特性,从而导致其频率相关的散射响应。所提出的技术处理这些响应并输出等效电路。该算法基于一种改进的矢量拟合方案,目前已成为EMC和SI研究的标准工具。所提出的改进主要集中在对噪声的鲁棒性上,噪声总是存在于测量数据中,以及自动阶数估计。这些问题是通过自动检测由噪声引起的杂散极点来解决的,这些杂散极点很难重新定位,以最大限度地提高模型精度。应用实例说明了新拟合方案的优良性能。
{"title":"An automatic algorithm for equivalent circuit extraction from noisy frequency responses","authors":"S. Grivet-Talocia, M. Bandinu, F. Canavero","doi":"10.1109/ISEMC.2005.1513493","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513493","url":null,"abstract":"This paper presents a fully automatic algorithm for the extraction of equivalent circuits from noisy frequency responses. The application area involves the generation of SPICE-ready macromodels for critical interconnects for signal integrity characterizations. Direct measurements are often employed to obtain a characterization of a given interconnect structure, leading to its frequency-dependent scattering responses. The proposed technique processes these responses and outputs an equivalent circuit. The algorithm is based on a modification of the well-known vector fitting scheme, which has now become a standard tool in EMC and SI studies. The presented improvements focus on robustness to noise, which is always present in measured data, and on automatic order estimation. These issues are addressed via an automatic detection of any spurious poles due to the noise, which are hard relocated in order to maximize the model accuracy. Several application examples are presented to illustrate the excellent capabilities of the new fitting scheme.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"1 1","pages":"163-168 Vol. 1"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89576205","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}
引用次数: 8
Application of fourier and wavelet transforms to the identification of EMI noise sources in SMPSs 傅立叶和小波变换在smps中电磁干扰噪声源识别中的应用
Pub Date : 2005-10-03 DOI: 10.1109/ISEMC.2005.1513582
L. Coppola, S. Buso, Qian Liu, D. Boroyevich, A. Bell
The Fourier and wavelet transform are applied to analyze the signals in a power electronics converter. The wavelet transform makes it possible to have important information about the time evolution of the frequency spectrum. Thank to this post-processing, the source of the harmonic peaks found in the Fourier spectrum can be identified in the time evolution of the signals of the circuit under study
应用傅里叶变换和小波变换对电力电子变换器中的信号进行分析。小波变换使我们能够获得有关频谱时间演化的重要信息。由于这种后处理,在傅立叶频谱中发现的谐波峰值的来源可以在研究电路的信号的时间演化中识别出来
{"title":"Application of fourier and wavelet transforms to the identification of EMI noise sources in SMPSs","authors":"L. Coppola, S. Buso, Qian Liu, D. Boroyevich, A. Bell","doi":"10.1109/ISEMC.2005.1513582","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513582","url":null,"abstract":"The Fourier and wavelet transform are applied to analyze the signals in a power electronics converter. The wavelet transform makes it possible to have important information about the time evolution of the frequency spectrum. Thank to this post-processing, the source of the harmonic peaks found in the Fourier spectrum can be identified in the time evolution of the signals of the circuit under study","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"28 1","pages":"584-589"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89272059","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}
引用次数: 8
New double-shielded power cables generating low magnetic field levels 新型低磁场双屏蔽电力电缆
Pub Date : 2005-10-03 DOI: 10.1109/ISEMC.2005.1513496
M. D'amore, D. Paladino, M. S. Sarto
The design criteria of new medium voltage cables of a three-phase power line generating very low magnetic field levels are described. The double-shielded cables have the inner screen made of copper and the outer one realized by alloy-49 or steel-1010. The currents induced in the copper shields generate a magnetic field opposite to the one produced by the currents flowing in the inner conductors, thus reducing strongly the external magnetic field. The ferromagnetic shield has the function of confining the magnetic induction flux in order to increase the intensity of the circulating currents in the copper screens. The sizing of the cross-section of the copper screen, which is the crucial aspect of the project, is obtained by means of the thermal analysis of the cables and the computation of the generated magnetic field level. Moreover, the simulation of the three-phase line for the prediction of the power losses is carried out. Prototypes of the new cables are realized and the measurement of the 50 Hz magnetic field generated by the three-phase test line, 25 m long, is carried out in the laboratory. The very low levels of the measured magnetic induction prove the good performances of the new cables.
介绍了极低磁场电平三相输电线路新型中压电缆的设计准则。双屏蔽电缆的内屏蔽由铜制成,外屏蔽由合金49或钢-1010制成。铜屏蔽中感应的电流产生的磁场与内部导体中流动的电流产生的磁场相反,从而强烈地减弱了外部磁场。铁磁屏蔽具有限制磁感应通量的作用,以增加铜屏蔽内的循环电流强度。通过对电缆的热分析和产生的磁场水平的计算,得到了铜网截面的尺寸,这是该工程的关键环节。此外,还对三相线路进行了仿真,以预测其功率损耗。实现了新电缆的原型,并在实验室中对长25米的三相测试线产生的50 Hz磁场进行了测量。测得的极低的磁感应强度证明了新电缆的良好性能。
{"title":"New double-shielded power cables generating low magnetic field levels","authors":"M. D'amore, D. Paladino, M. S. Sarto","doi":"10.1109/ISEMC.2005.1513496","DOIUrl":"https://doi.org/10.1109/ISEMC.2005.1513496","url":null,"abstract":"The design criteria of new medium voltage cables of a three-phase power line generating very low magnetic field levels are described. The double-shielded cables have the inner screen made of copper and the outer one realized by alloy-49 or steel-1010. The currents induced in the copper shields generate a magnetic field opposite to the one produced by the currents flowing in the inner conductors, thus reducing strongly the external magnetic field. The ferromagnetic shield has the function of confining the magnetic induction flux in order to increase the intensity of the circulating currents in the copper screens. The sizing of the cross-section of the copper screen, which is the crucial aspect of the project, is obtained by means of the thermal analysis of the cables and the computation of the generated magnetic field level. Moreover, the simulation of the three-phase line for the prediction of the power losses is carried out. Prototypes of the new cables are realized and the measurement of the 50 Hz magnetic field generated by the three-phase test line, 25 m long, is carried out in the laboratory. The very low levels of the measured magnetic induction prove the good performances of the new cables.","PeriodicalId":6459,"journal":{"name":"2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.","volume":"1 1","pages":"179-184 Vol. 1"},"PeriodicalIF":0.0,"publicationDate":"2005-10-03","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"89480620","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}
引用次数: 4
期刊
2005 International Symposium on Electromagnetic Compatibility, 2005. EMC 2005.
全部 Acc. Chem. Res. ACS Applied Bio Materials ACS Appl. Electron. Mater. ACS Appl. Energy Mater. ACS Appl. Mater. Interfaces ACS Appl. Nano Mater. ACS Appl. Polym. Mater. ACS BIOMATER-SCI ENG ACS Catal. ACS Cent. Sci. ACS Chem. Biol. ACS Chemical Health & Safety ACS Chem. Neurosci. ACS Comb. Sci. ACS Earth Space Chem. ACS Energy Lett. ACS Infect. Dis. ACS Macro Lett. ACS Mater. Lett. ACS Med. Chem. Lett. ACS Nano ACS Omega ACS Photonics ACS Sens. ACS Sustainable Chem. Eng. ACS Synth. Biol. Anal. Chem. BIOCHEMISTRY-US Bioconjugate Chem. BIOMACROMOLECULES Chem. Res. Toxicol. Chem. Rev. Chem. Mater. CRYST GROWTH DES ENERG FUEL Environ. Sci. Technol. Environ. Sci. Technol. Lett. Eur. J. Inorg. Chem. IND ENG CHEM RES Inorg. Chem. J. Agric. Food. Chem. J. Chem. Eng. Data J. Chem. Educ. J. Chem. Inf. Model. J. Chem. Theory Comput. J. Med. Chem. J. Nat. Prod. J PROTEOME RES J. Am. Chem. Soc. LANGMUIR MACROMOLECULES Mol. Pharmaceutics Nano Lett. Org. Lett. ORG PROCESS RES DEV ORGANOMETALLICS J. Org. Chem. J. Phys. Chem. J. Phys. Chem. A J. Phys. Chem. B J. Phys. Chem. C J. Phys. Chem. Lett. Analyst Anal. Methods Biomater. Sci. Catal. Sci. Technol. Chem. Commun. Chem. Soc. Rev. CHEM EDUC RES PRACT CRYSTENGCOMM Dalton Trans. Energy Environ. Sci. ENVIRON SCI-NANO ENVIRON SCI-PROC IMP ENVIRON SCI-WAT RES Faraday Discuss. Food Funct. Green Chem. Inorg. Chem. Front. Integr. Biol. J. Anal. At. Spectrom. J. Mater. Chem. A J. Mater. Chem. B J. Mater. Chem. C Lab Chip Mater. Chem. Front. Mater. Horiz. MEDCHEMCOMM Metallomics Mol. Biosyst. Mol. Syst. Des. Eng. Nanoscale Nanoscale Horiz. Nat. Prod. Rep. New J. Chem. Org. Biomol. Chem. Org. Chem. Front. PHOTOCH PHOTOBIO SCI PCCP Polym. Chem.
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
0
微信
客服QQ
Book学术公众号 扫码关注我们
反馈
×
意见反馈
请填写您的意见或建议
请填写您的手机或邮箱
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
现在去查看 取消
×
提示
确定
Book学术官方微信
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术
文献互助 智能选刊 最新文献 互助须知 联系我们:info@booksci.cn
Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。
Copyright © 2023 Book学术 All rights reserved.
ghs 京公网安备 11010802042870号 京ICP备2023020795号-1