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2006 17th International Zurich Symposium on Electromagnetic Compatibility最新文献

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A new approach for analysis of transient scattering from arbitrarily shaped 3D dielectric bodies 一种分析任意形状三维介质体瞬态散射的新方法
2006 17th International Zurich Symposium on Electromagnetic Compatibility Pub Date : 2006-05-15 DOI: 10.1109/EMCZUR.2006.214866
R. Aghajfari, H. Singer
{"title":"A new approach for analysis of transient scattering from arbitrarily shaped 3D dielectric bodies","authors":"R. Aghajfari, H. Singer","doi":"10.1109/EMCZUR.2006.214866","DOIUrl":"https://doi.org/10.1109/EMCZUR.2006.214866","url":null,"abstract":"In this paper a novel stable time-domain approach is presented to compute the scattering from arbitrarily shaped 3D dielectric objects. The method applies both electric and magnetic field boundary conditions on the surfaces of homogeneous structures while considering the electric currents as unknowns. For triangular patches, modeling the surface of the composite body, RWG basis functions are utilized. To solve the resultant integral equations the implicit method of moments is used. The scattered electric and magnetic fields inside and outside the body which are dependent only on the electric surface currents are computed with less effort compared with other methods using both equivalent electric and magnetic surface currents","PeriodicalId":130489,"journal":{"name":"2006 17th International Zurich Symposium on Electromagnetic Compatibility","volume":"82 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126475150","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
Ionisation gradient of low resistivity soils and liquids 低电阻率土壤和液体的电离梯度
2006 17th International Zurich Symposium on Electromagnetic Compatibility Pub Date : 2006-05-15 DOI: 10.1109/EMCZUR.2006.214958
N. Nor
{"title":"Ionisation gradient of low resistivity soils and liquids","authors":"N. Nor","doi":"10.1109/EMCZUR.2006.214958","DOIUrl":"https://doi.org/10.1109/EMCZUR.2006.214958","url":null,"abstract":"The effects of moisture contents in sand (from 1% to 10%), grain size (medium and fine), impulse polarity and Earth electrode's dimension (hemispherical and parallel-plate test cell) on the threshold electric field, Ec value, have been presented in a previous work (N. Mohamad Nor et al., 2005). In that study (N. Mohamad Nor et al., 2005), the Ec value is obtained when two current peaks were observed. However, no Ec value is obtained for low resistivity test media (resistive liquid medium, sand with large percentage of water content=15%, salt with different percentage of water content, and sand-salt soil mixtures (N. Mohamad Nor et al., 2005, 2001), since there was no second current peak was obtained in those test media. This paper is therefore to obtain the Ec value for these low resistivity test media. Using the available voltage and current traces from previous study (N. Mohamad Nor et al., 2001), for the first time the Ec is taken when v-i curve starts to form a loop. It was found that the Ec of low resistivity test media are within the range of Ec suggested in previous studies, which are from 1.3 kV/cm to 20 kV/cm","PeriodicalId":130489,"journal":{"name":"2006 17th International Zurich Symposium on Electromagnetic Compatibility","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130060136","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
A modeling method for simulation analysis of electromagnetic susceptibility problem 电磁磁化率问题仿真分析的建模方法
2006 17th International Zurich Symposium on Electromagnetic Compatibility Pub Date : 2006-05-15 DOI: 10.1109/EMCZUR.2006.214963
Aimin Zhang, Degui Chen, Hang Zhang, Gang Jiang
{"title":"A modeling method for simulation analysis of electromagnetic susceptibility problem","authors":"Aimin Zhang, Degui Chen, Hang Zhang, Gang Jiang","doi":"10.1109/EMCZUR.2006.214963","DOIUrl":"https://doi.org/10.1109/EMCZUR.2006.214963","url":null,"abstract":"In EMS (electromagnetic susceptibility) simulation of electronic devices, the mathematical modeling can be adopted to conduct systematic analysis of EMS and optimization of the filter design. This paper has presented one modeling method for the EMS simulation analysis of electronic devices, based on the system identification supported by experimental data. A mathematical modeling of the power module in the relay under surge interference has also been constructed according to the input and output response of this module measured by oscillograph. Good agreements between the SPICE simulation and the measurements demonstrate the validity of this modeling method","PeriodicalId":130489,"journal":{"name":"2006 17th International Zurich Symposium on Electromagnetic Compatibility","volume":"36 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132608789","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: 3
Co-existence of GSM1800 and GSM1900: BTS-to- BTS interference GSM1800和GSM1900共存:BTS-to- BTS干扰
2006 17th International Zurich Symposium on Electromagnetic Compatibility Pub Date : 2006-05-15 DOI: 10.1109/EMCZUR.2006.214882
N. Petchinda, S. Malisuwan, P. Ritthiruangdech, V. Ungvichian
{"title":"Co-existence of GSM1800 and GSM1900: BTS-to- BTS interference","authors":"N. Petchinda, S. Malisuwan, P. Ritthiruangdech, V. Ungvichian","doi":"10.1109/EMCZUR.2006.214882","DOIUrl":"https://doi.org/10.1109/EMCZUR.2006.214882","url":null,"abstract":"Co-existence of GSM1800 and GSM1900 that share the same frequency band is becoming one of significant problems and the most challenging issues. The most critical co-existence situations occur when the downlink of any system is close to the uplink of the concerned GSM system. In that case one base transceiver station (BTS) is constantly disturbing a GSM BTS probably with high gain antennas on both sides. The scope of this paper is to study the co-existence interference issues, which may occur when operating GSM1800 system with GSM1900 system within the same geographical area, and give recommendations to avoid them. Minimum separation distances to avoid the impact of GSM1800 DL to GSM1900 UL interference are recommended in this paper","PeriodicalId":130489,"journal":{"name":"2006 17th International Zurich Symposium on Electromagnetic Compatibility","volume":"35 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128933726","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
Evaluation of packages by simulating IC emission using a LECCS model 利用LECCS模型模拟IC发射来评估封装
2006 17th International Zurich Symposium on Electromagnetic Compatibility Pub Date : 2006-05-15 DOI: 10.1109/EMCZUR.2006.214930
E. Takahashi, T. Nakayama, Y. Saito
{"title":"Evaluation of packages by simulating IC emission using a LECCS model","authors":"E. Takahashi, T. Nakayama, Y. Saito","doi":"10.1109/EMCZUR.2006.214930","DOIUrl":"https://doi.org/10.1109/EMCZUR.2006.214930","url":null,"abstract":"We applied a LECCS (linear equivalent circuit and current source) model that has been proposed as a model for EMI simulation of an LSI to evaluate package EMI characteristics. We divided the LSI into the chip part and the package part and described it using the LECCS model. We simulated the power supply current spectrum while changing the package part. The measurement results, obtained using the MP (magnetic probe) method, were compared with the simulation results. Our results confirmed that the LECCS model is valid for impact evaluation of the EMI characteristics of a package","PeriodicalId":130489,"journal":{"name":"2006 17th International Zurich Symposium on Electromagnetic Compatibility","volume":"25 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131172682","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: 3
Modelling shielding properties of concrete 混凝土屏蔽特性建模
2006 17th International Zurich Symposium on Electromagnetic Compatibility Pub Date : 2006-05-15 DOI: 10.1109/EMCZUR.2006.214862
A. Ogunsola, U. Reggiani, L. Sandrolini
{"title":"Modelling shielding properties of concrete","authors":"A. Ogunsola, U. Reggiani, L. Sandrolini","doi":"10.1109/EMCZUR.2006.214862","DOIUrl":"https://doi.org/10.1109/EMCZUR.2006.214862","url":null,"abstract":"Concrete is a porous, heterogeneous material whose abundant use in numerous applications demands a detailed understanding of its properties. Besides experimental measurements, mathematical models can be useful to investigate its behaviour with respect to frequency, moisture content or other agents. These models can be used in EMC to predict the shielding effectiveness of a concrete structure against external electromagnetic waves. This paper presents a comparison between an analytical approach that relies on measurements, and numerical simulations that make use of dispersion models. The comparative results demonstrate that the analytical approach, which is more computationally efficient than numerical solvers, can be used to predict the shielding effectiveness of concrete structures","PeriodicalId":130489,"journal":{"name":"2006 17th International Zurich Symposium on Electromagnetic Compatibility","volume":"59 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133616721","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: 50
Time-domain measurements of transient field coupling through slots 通过槽的瞬态场耦合的时域测量
2006 17th International Zurich Symposium on Electromagnetic Compatibility Pub Date : 2006-05-15 DOI: 10.1109/EMCZUR.2006.215016
Koh Wee Jin, Tan Joo Huat, T. Roland, K.C.H. Ernest
{"title":"Time-domain measurements of transient field coupling through slots","authors":"Koh Wee Jin, Tan Joo Huat, T. Roland, K.C.H. Ernest","doi":"10.1109/EMCZUR.2006.215016","DOIUrl":"https://doi.org/10.1109/EMCZUR.2006.215016","url":null,"abstract":"Recent advancements in the field of communications technology include the use of high speed data transmissions with extremely wide frequency bandwidth. This technology is widely employed in ultra-wideband (UWB) communication systems which can produce significant EM emissions at microwave frequencies. A key element in assessing the vulnerability of equipment to UWB signals involves an understanding on the phenomenon of transient electromagnetic energy coupling into cavity-like objects. When the wavelength of microwave sources is comparable to the size of the ports of entry (slots, apertures, seams, cracks, protruding connectors, etc.), the latter is no longer below the cut-off frequency, allowing significant amount of microwave energy to penetrate into internal susceptible electronics. In fact, these coupling paths can be highly resonating at certain microwave frequencies making EM shielding a challenging task. This paper examines the coupling effects of transient UWB signals into a rectangular shielded enclosure with two different slot sizes, through physical measurements using a time-domain technique","PeriodicalId":130489,"journal":{"name":"2006 17th International Zurich Symposium on Electromagnetic Compatibility","volume":"92 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133198612","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
Computational study of significant semi-infinite integrals in electromagnetic and atomic interactions 电磁与原子相互作用中重要半无穷积分的计算研究
2006 17th International Zurich Symposium on Electromagnetic Compatibility Pub Date : 2006-05-15 DOI: 10.1109/EMCZUR.2006.214905
C. Qiu, Lewei Li, T. Yeo, S. Zouhdi
{"title":"Computational study of significant semi-infinite integrals in electromagnetic and atomic interactions","authors":"C. Qiu, Lewei Li, T. Yeo, S. Zouhdi","doi":"10.1109/EMCZUR.2006.214905","DOIUrl":"https://doi.org/10.1109/EMCZUR.2006.214905","url":null,"abstract":"When deriving dyadic Green's functions for the spherical structures with uniaxial or gyrotropic anisotropic materials and studying the interaction among the neutrons, ions and atoms, some semi-infinite integrals whose integrant function consists of two spherical Bessel functions and a power function needs to be evaluated. Furthermore, those kinds of integrals are of great importance to the research of atomic particle collisions, multipole moments and relativistic processes. During the recent work associated with the formulations, we evaluated in detail the integrals of two spherical Bessel functions given in C.T. Whelan (1986), but found the mistakes in the solution given in C.T. Whelan (1986). Therefore, this paper revisited the evaluation of the integral and provided the correct solution to the integral in spherical coordinates in terms of distribution, step functions and delta functions. The formulation was further extended and it is also found that the solution varies differently in the cases of even and odd values of l - l'","PeriodicalId":130489,"journal":{"name":"2006 17th International Zurich Symposium on Electromagnetic Compatibility","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124457241","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
Field distribution and over-moding in a TEM cell TEM单元中的场分布和过模化
2006 17th International Zurich Symposium on Electromagnetic Compatibility Pub Date : 2006-05-15 DOI: 10.1109/EMCZUR.2006.214970
P. Kay
{"title":"Field distribution and over-moding in a TEM cell","authors":"P. Kay","doi":"10.1109/EMCZUR.2006.214970","DOIUrl":"https://doi.org/10.1109/EMCZUR.2006.214970","url":null,"abstract":"Method-of-moments simulation is used to determine the electric field in a TEM cell. As the excitation frequency increases, the simulation shows the expected break-down in TEM mode behaviour. The research characterises the resonances in the TEM cell, in order to form a basis for determining ways to deal with resonances when using a TEM enclosure above the first resonant frequency. This is an important step in the process of producing a working hybrid TEM-reverberation immunity test facility, by preparing to utilise TEM and non-TEM behaviour at higher frequencies to provide a transition between TEM and reverberation mode operation","PeriodicalId":130489,"journal":{"name":"2006 17th International Zurich Symposium on Electromagnetic Compatibility","volume":"20 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116200412","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
Simultaneous EM measurement system using parallel modulated probe array 并行调制探头阵列同步电磁测量系统
2006 17th International Zurich Symposium on Electromagnetic Compatibility Pub Date : 2006-05-15 DOI: 10.1109/EMCZUR.2006.214925
Qiang Chen, K. Sawaya, T. Habu, R. Hasumi
{"title":"Simultaneous EM measurement system using parallel modulated probe array","authors":"Qiang Chen, K. Sawaya, T. Habu, R. Hasumi","doi":"10.1109/EMCZUR.2006.214925","DOIUrl":"https://doi.org/10.1109/EMCZUR.2006.214925","url":null,"abstract":"A simultaneous measurement method using parallel modulated probe array is proposed to measure the electromagnetic radiation. Each modulated probe is excited by a local signal with different frequency, so that the received IF signal contains different frequency components which indicate the relative magnitude of the RF signal at positions of the probes, and all the IF components are measured simultaneously by a broad-band microwave receiver. The configuration of the measurement system is described. The performance of the system is demonstrated by the measurement time and some experimental results such as the radiation pattern and the radiation efficiency of measured antennas","PeriodicalId":130489,"journal":{"name":"2006 17th International Zurich Symposium on Electromagnetic Compatibility","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2006-05-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123532638","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
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