{"title":"Application and Evaluation of EMI Power Line Filters","authors":"A. A. Toppeto","doi":"10.1109/ISEMC.1987.7570765","DOIUrl":"https://doi.org/10.1109/ISEMC.1987.7570765","url":null,"abstract":"","PeriodicalId":443616,"journal":{"name":"1987 IEEE International Symposium on Electromagnetic Compatibility","volume":"133 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132617276","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 Experimental Test of the Theory of Lightning Induced Voltages on Power Line","authors":"A. Tzeng, Jih-Shan Tang","doi":"10.1109/ISEMC.1987.7570804","DOIUrl":"https://doi.org/10.1109/ISEMC.1987.7570804","url":null,"abstract":"An analysis of the relation between measured and calculated voltages induced by lightning on an unenergized power line has been studied. The experiment, performed at the NASA Kennedy Space Center involved the simultaneous measurement of the voltages induced on a power line and the two perpendicular components of the lightning horizontal magnetic field. The calculation of induced voltage has been performed using a time-domain transmission line coupling model as proposed by Agrawal et al. The inputs of this model are the incident vertical electric field and the incident horizontal electric field both derived via theory from the measured magnetic fields. Experiments were performed for both ends of the power line opencircuited and for the left-end terminated in 500 f t or 600 i l with the right end open. Comparison of the peak amplitude of the induced voltage showed that the differences between the measurement and the calculation are typically less than 35%. The waveshapes of the measured and calculated voltage are also in reasonably good agreement. Reasons for the observed discrepancies between experiment and theory are discussed.","PeriodicalId":443616,"journal":{"name":"1987 IEEE International Symposium on Electromagnetic Compatibility","volume":"40 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"115075525","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":"Computing Equipment Standards - An Update on Cable and Peripheral Placement","authors":"Glen Dash","doi":"10.1109/ISEMC.1987.7570794","DOIUrl":"https://doi.org/10.1109/ISEMC.1987.7570794","url":null,"abstract":"This paper describes the work of ANSI C63 Subcommittee 1 Working Group on Cable and Peripheral Placement. The Working Group is endeavoring to create a standard to define how cables and peripherals should be placed when testing computing equipment for compliance with various standards and regulations.","PeriodicalId":443616,"journal":{"name":"1987 IEEE International Symposium on Electromagnetic Compatibility","volume":"24 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116611991","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":"The Near Fields of Linear and Planar Arrays of Dipoles -- On- and Off-Axis","authors":"Glen E. Bahr, A. Adams","doi":"10.1109/ISEMC.1987.7570810","DOIUrl":"https://doi.org/10.1109/ISEMC.1987.7570810","url":null,"abstract":"The near fields of arrays of Hertzian and halfwave dipoles are analyzed on and about the perpendicular axis of symmetry of the arrays. Arrays were developed from single short or long dipoles, first single-dimensionally, then two-dimensionally, and the electric and magnetic fields and the Poynting vector were computed and plotted. The effects of dipole spacing and array dimensions are individually addressed. Oscillations appear in the field and Poynting vectors of multidipole arrays in the near field region, and there are no reductions in field intensities out to distances of several tens of wavelengths for a 10λ × 10λ square array.","PeriodicalId":443616,"journal":{"name":"1987 IEEE International Symposium on Electromagnetic Compatibility","volume":"301 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"114584555","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":"NEMP - Interaction with Multiconductor Transmission Lines","authors":"F. Canavero, V. Daniele, R. Graglia","doi":"10.1109/ISEMC.1987.7570805","DOIUrl":"https://doi.org/10.1109/ISEMC.1987.7570805","url":null,"abstract":"Voltages and currents induced in a multiconductor line by a, nuclear electromagnetic pulse (NEMP) are determined. The finite conductivity of the terrain is taken into, account by introducing a new theory leading to the definition of the complex images of the wires. End voltages and currents at the loads are obtained through the transmission line formalism. These expressions are then cast in a rather enlightening form, well suited for the transient analysis. The solution proposed, with additional assumptions, leads to closed form results, which are also useful to test numerical codes.","PeriodicalId":443616,"journal":{"name":"1987 IEEE International Symposium on Electromagnetic Compatibility","volume":"26 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"124847688","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":"Considerations on Modelling Crosstalk on Printed Circuit Boards","authors":"R. Khan, G. Costache","doi":"10.1109/ISEMC.1987.7570784","DOIUrl":"https://doi.org/10.1109/ISEMC.1987.7570784","url":null,"abstract":"In modelling crosstalk on printed circuit boards, the distributed parameter transmission line model is applied to in clude the effects of electromagnetic coupling between lands. Us ing a finite element approach to calculate the per-unit length parameters, this paper outlines an effective procedure for pre dicting the time domain induced voltages and currents in a general ’n + l ’ parallel conductor configuration. Implemented in a computer program, results obtained using this procedure compare well with available theoretical and measured data.","PeriodicalId":443616,"journal":{"name":"1987 IEEE International Symposium on Electromagnetic Compatibility","volume":"41 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125500287","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":"Lightning Surge Test Circuit Design Method for Telecommunication Equipment","authors":"Tamio Motomitsu, T. Ideguchi, Hisaaki Kanamori","doi":"10.1109/ISEMC.1987.7570742","DOIUrl":"https://doi.org/10.1109/ISEMC.1987.7570742","url":null,"abstract":"This paper proposes a lightning surge test circuit for estimating the resistibility of equipment against lightning surges. Lightning surge voltages appear on telecommunication lines and reach terminal equipment and can cause significant damage. A simple lightning surge test circuit composed of a small number of circuit elements is proposed. The circuit element design method simulates lightning surge fed into equipment. A circuit design example is shown and it is shown that the simulating error is less than 30%.","PeriodicalId":443616,"journal":{"name":"1987 IEEE International Symposium on Electromagnetic Compatibility","volume":"87 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126407299","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":"Studies Relating to the Design of Open Field EMI Test Sites","authors":"J. DeMarinis","doi":"10.1109/ISEMC.1987.7570757","DOIUrl":"https://doi.org/10.1109/ISEMC.1987.7570757","url":null,"abstract":"The design o f open field EM I measurement sites presents a number of questions for which there have not been readily available answers. This paper presents four studies which were made in order to gain needed information, and provide guidance for site design. The subjects to be treated are: I. A simple method for measurement of Reflectance and Attenuation of building materials. II. Required separation between nearby open field sites, and other sources of computer-generated interference. III. 10-meter site errors from nearby reflecting objects. IV. Prediction & measurement o f correlation errors between 3-meter and 10-meter site distances and development o f bands o f confidence around such correlation.","PeriodicalId":443616,"journal":{"name":"1987 IEEE International Symposium on Electromagnetic Compatibility","volume":"116 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126781578","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":"Definitive Open Area Test Site Qualifications","authors":"D. Heirman","doi":"10.1109/ISEMC.1987.7570758","DOIUrl":"https://doi.org/10.1109/ISEMC.1987.7570758","url":null,"abstract":"Present methods for determining open area as well as other test site qualifications to measure radiated emissions for compliance with FCC and other regulatory requirements depend on comparing horizontal polariza tion site attenuation measurements to a theoretical m odel.1 Horizontal polarization measurements are generally inadequate to identify site anomalies which may actually cause significant errors when equipment emision com pliance is subsequently measured. Both vertical and horizontal site attenuation measurements are necessary as well as adequate theoretical models to use in the comparisons. This paper summarizes recent efforts of the voluntary standards community to standardize adequate site qualification measurements. This work is being considered primarily by the American National Stan dards Institute Accredited Standards Committee C63 (EMC) and the Special International Committee on Radio Interference (CISPR).2,3","PeriodicalId":443616,"journal":{"name":"1987 IEEE International Symposium on Electromagnetic Compatibility","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133060986","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":"Development of a Cable Shield Tester for In-Situ Hardness Surveillance of Cables","authors":"L. Hoeft, P. Miller, W. Prather","doi":"10.1109/ISEMC.1987.7570748","DOIUrl":"https://doi.org/10.1109/ISEMC.1987.7570748","url":null,"abstract":"A conceptual model of a shielded cable tester, capable of measuring the surface transfer impedance of cables installed on an aircraft or other system, has been experimentally demonstrated. The objective of this program was to develop a shielded cable tester to measure the electromagnetic performance of shielded cables while they were installed on aircraft. In addition, the tester had to use methods that were simple to perform and to interpret, produce data for predicting the rate of degradation and be a credible measurement directly related to electromagnetic hard ness. The tester was required to have sufficient sensitivity so that cables could be evaluated that had transfer impedances that are a factor of two less than those associated with a typical double braid. This would require measuring transfer resistances of 2 mS2 and transfer mutual inductances of 30 pH. This corre sponds to a shielding effectiveness of about 95 dB at 10 MHz. The initial design analysis led to an approach in which the cable surface transfer impedance was measured by inductively injecting a C.W. current on the outside of the cable shield (with both ends attached to the aircraft), measuring the ratio of the voltage on the conductors to the shield current, calculating the shield resistance and mutual induc tance and comparing the measured values to a hardness acceptance criteria. Measurements using brass calibration samples showed that sensitivity require ments were met with a factor of five margin. Measure ments made on a wide variety of cables demonstrated that the electromagnetic quality of the cable could be quantitatively evaluated in spite of variations in length and load impedances.","PeriodicalId":443616,"journal":{"name":"1987 IEEE International Symposium on Electromagnetic Compatibility","volume":"72 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1987-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"131250133","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}