{"title":"Stray capacitance modeling of inductors by using the finite element method","authors":"Q. Yu, T. W. Holmes","doi":"10.1109/ISEMC.1999.812918","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.812918","url":null,"abstract":"Stray capacitance modeling of an inductor is essential for its accurate equivalent circuit modeling. The stray capacitance determines the inductor's performance and upper frequency limit. In this paper, a method is proposed for modeling the distributed stray capacitance of inductors by the finite element method and a node-to-node lumped capacitance network. The effects of the wire insulation layer, ferrite core, the number of segments used to model the circumference of the wire cross section, the pitch and coil-to-core distances, and the capacitance between non-adjacent turns, etc., on the inductors' self-capacitance and calculation accuracy, have all been considered. The calculated equivalent lumped stray capacitance for a rod inductor with ferrite core is compared to that estimated from measurement. Good agreement between them has been observed.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"3 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132147427","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}
{"title":"Suppression effects of electromagnetic radiation from inner-lead portion molded by ferrite-resin composite","authors":"T. Akino, Y. Ono, S. Shinohara, R. Sato","doi":"10.1109/ISEMC.1999.810204","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.810204","url":null,"abstract":"This paper describes the suppression effects of electromagnetic waves radiating from the inner-lead portion of lead terminals molded by ferrite-resin composite in semiconductor devices. First, using composites in molded cylindrical form having various ferrite powder content, the complex relative permeability and complex relative permittivity were measured using the Nicolson-Ross, Weir method. Next, the impedance of the inner-lead portion of the lead terminal specimens, molded by the same ferrite-resin composite, was measured. Following this, each of the lead terminal specimens was mounted on a printed wiring board settled in a shield box, and electromagnetic radiation from the inner-lead was measured in an anechoic chamber, while terminating one end of the lead terminal to a 50 ohms resistor and feeding a high frequency signal through the other end. The results of these experiments showed that electromagnetic radiation from the inner-lead portion can be effectively suppressed by molding the lead terminal by ferrite-resin composite having a ferrite powder content of 80 weight-% or greater.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132163547","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}
{"title":"Review of 1998 TC-9 challenging problems results and 1999 TC-9 challenging problems introduction [EMC]","authors":"B. Archambeault, A. Ruehli","doi":"10.1109/ISEMC.1999.810097","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.810097","url":null,"abstract":"Two different problems were created for the 1998 IEEE/EMC symposium's special session on challenging problems. All the major techniques were represented, including the method of moments (MoM), the finite-difference time-domain (FDTD), the finite element method (FEM), the transmission line method (TLM), and the partial element equivalent circuit (PEEC) technique. Each author was invited to solve one or more of the challenge problems, while highlighting why particular technique was well suited or not to this problem. A new set of challenging problems have been created for 1999. All four of these problems are difficult problems, but are typical of the real-world problems that face EMC engineers. Each of the four different problems is described.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"128326126","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}
{"title":"EMC measurement and analysis of C-band radars and dedicated short range communications systems","authors":"R. Dalke, F. Sanders, B. Bedford","doi":"10.1109/ISEMC.1999.810198","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.810198","url":null,"abstract":"Dedicated short-range communication (DSRC) systems have been proposed for operation at locations across the United States in the 5850 to 5925 MHz band. Various high-power search and weather radars operate at or near this frequency band and are a source of potential interference. The Institute for Telecommunication Sciences has performed a series of interference tests to determine the electromagnetic compatibility of DSRC systems used for automatic toll collection and high-power 5-GHz radars. A summary of the EMC testing methods and results are presented. The results show the isolation required for compatible operation in terms of power and distance (from the interfering radar to the DSRC system) for typical radar pulse characteristics and antenna configurations.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129377666","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}
{"title":"Calculation of lightning surges inducing at equipment connecting with 10 Base-5 cable","authors":"T. Tominaga, H. Kawano, M. Hattori, M. Sato","doi":"10.1109/ISEMC.1999.810096","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.810096","url":null,"abstract":"A lightning surge induction model for local area networks (LANs) that use 10 Base-5 cable has been developed for use in the design of a surge protector for transceivers. The model is shown as an equivalent circuit. Surges induced by lightning were calculated using SPICE based on the equivalent circuit and compared with measurements from a 100-m-long 10 Base-5 cable with a resistive load. The voltage at the transceiver terminal and the current in the protector were calculated using this model, and the calculated values agreed fairly well with the measurements. This demonstrated the usefulness of the method presented for designing surge protectors to be used with LAN equipment.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"141 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"123797421","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}
{"title":"An examination of the rationale for limiting harmonic emissions from low-voltage equipment","authors":"A. Mansoor, J. McKim","doi":"10.1109/ISEMC.1999.810183","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.810183","url":null,"abstract":"Connection of nonlinear loads such as diode bridge rectifiers to AC mains systems results in current flow at power harmonic frequencies. Undesired effects arising from the flow of harmonic currents through power system impedances drive regulatory efforts via standards such as IEC/EN 61000-3-2, which is intended to limit emissions at the product level, and IEEE 519, which limits emissions at the facility level. Simplified linear models based on Ohm's law for AC circuits have been used to provide a technical rationale for establishing permissible emission levels given desired maximum voltage distortion. Two such models are critically examined in light of a variety of well-documented cancellation effects. Neither model provides a consistent prediction of voltage distortion levels. This examination leads to the conclusion that regulatory efforts should be guided more by ongoing system monitoring than by theoretical models.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"122273962","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}
{"title":"An alternate, complementary method for characterizing EMI filters","authors":"M. Mardiguian, J. Raimbourg","doi":"10.1109/ISEMC.1999.810171","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.810171","url":null,"abstract":"Proper characterization of EMI filters has always been a problem, since real-life application never replicates the impedances of the test set-up. This paper analyzes filter insertion loss in actual EUT configurations, compared to the artificial data of Mil Std220 or CISPR 17, and recommends a complementary method using the LISN as a test load.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"2 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130197885","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}
{"title":"Mixed circuit/electromagnetic analysis of field coupling to high speed interconnects in inhomogenous medium","authors":"I. Erdin, M. Nakhla","doi":"10.1109/ISEMC.1999.812945","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.812945","url":null,"abstract":"An efficient method is presented for rigorous analysis of incident field coupling to high speed interconnects. The method is based on generating time domain equivalent sources from incoming fields through finite difference time domain analysis (FDTD) and incorporating them with a circuit level simulator such as SPICE. With this approach, it is possible to perform a circuit analysis of arbitrarily shaped structures which are exposed to external fields. Moreover, the proposed method overcomes the numerical stability problems of FDTD when coupled with nonlinear terminations.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"8 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129248872","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}
{"title":"A novel Poynting vector analyzer","authors":"D. Hansen, D. Ristau","doi":"10.1109/ISEMC.1999.810086","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.810086","url":null,"abstract":"A new frequency selective field strength sensor (150 kHz-1 GHz) is described with high dynamic range, measuring all Poynting vector quantities (E, H, phase). Our chosen principle includes a synthesizer and a triple superhet conversion down to 0-150 Hz. The instrument uses transmission line sensor heads and special baluns with superb common mode rejection. Sensitivity data is shown, demonstrating the sensor's application potential between several 100 V/m and about several 10 dB/spl mu/V/m. For the first time a sensor is now known for EMI emission as well as immunity measurements in one small instrument, The bandwidth can be switched from 120 kHz to 10 kHz. The prototype sensor is controlled by a RS232 fiber optic link and a power supply, which comprises a compressed air generator turbine or an appropriate battery.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"220 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"130483931","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}
{"title":"Modeling of the ground bounce effect on PCBs for high speed digital circuits","authors":"S. Leung, L. Wan, C.M. Ip","doi":"10.1109/ISEMC.1999.812878","DOIUrl":"https://doi.org/10.1109/ISEMC.1999.812878","url":null,"abstract":"A generalized transmission line equation (GTLE) is modeled for studying the effect of ground bounce (GB) in high speed digital circuits. The trace/ground configuration is modeled by a \"local wave\" concept. The GB effect is characterized in this modeling as a function of various PCB parameters, and simulation results confirm that GB is induced because of the resonant behavior.","PeriodicalId":312828,"journal":{"name":"1999 IEEE International Symposium on Electromagnetic Compatability. Symposium Record (Cat. No.99CH36261)","volume":"194 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1999-08-02","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126277370","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}