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IEEE 1991 International Symposium on Electromagnetic Compatibility最新文献

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A novel design for a 18 to 110 GHz direction finding system 一种18 ~ 110 GHz测向系统的新设计
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148238
F. Liu, J. Kellas, J. Watson, W. Sun, M. Chen, A. Chen
{"title":"A novel design for a 18 to 110 GHz direction finding system","authors":"F. Liu, J. Kellas, J. Watson, W. Sun, M. Chen, A. Chen","doi":"10.1109/ISEMC.1991.148238","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148238","url":null,"abstract":"The demand of detecting treat signals between 18 and 110 GHz has created interest in the development of broadband direction-finding system at the millimeter-wave frequency range. A novel design for a direction-finding system is presented, covering frequency bands from 18 to 110 GHz. The use of a flat splash reflector makes it possible to build the system without a rotary joint. Dual polarization detection is realized based on the design of symmetrical orthogonal-mode transducer.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"1 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129113897","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
The malfunction mechanism of digital circuits due to ground potential fluctuations. II 数字电路因地电位波动引起的故障机理。2
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148264
S. Nitta, K. Ebihara, A. Mutoh, H. Kakimoto
{"title":"The malfunction mechanism of digital circuits due to ground potential fluctuations. II","authors":"S. Nitta, K. Ebihara, A. Mutoh, H. Kakimoto","doi":"10.1109/ISEMC.1991.148264","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148264","url":null,"abstract":"For pt.I see ibid., vol.1, p.394 (1989). One of the causes of digital circuit malfunctions due to ground given potential fluctuation is clarified. Attention is given to the delay time occurring while ground potential fluctuation is propagating through the power supply line, its return line, signal line, and so on. It is experimentally and quantitatively clarified in the relationship among circuits malfunction, line length difference, ground potential level, and fluctuation frequency that the difference in each other's propagation is transformed to DC power supply fluctuation and signal-level fluctuation, and can be the cause of circuit malfunction.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"21 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126957035","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
Study of picosecond rise time in human-generated ESD 人为静电放电的皮秒上升时间研究
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148232
A. Podgorski, J. Dunn, R. Yeo
{"title":"Study of picosecond rise time in human-generated ESD","authors":"A. Podgorski, J. Dunn, R. Yeo","doi":"10.1109/ISEMC.1991.148232","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148232","url":null,"abstract":"Measurements of human-generated electrostatic discharge (ESD) were conducted during the Canadian winter under low humidity conditions. These measurements indicate the existence of ESD impulses with rise times shorter than 100 ps and peak current amplitude in excess of 50 A. The measuring system consisted of a current sensor with a calibrated bandwidth of 5 GHz and a TEK 7250 digitizer with numerically corrected bandwidth of 10 GHz. A bare hand, a blunt object (screwdriver), a sharp object (scriber), and a car key were used during the test.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"77 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126237449","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
The role of dispersion in fast wavefronts of power-mains disturbances 色散在电源扰动的快波前中的作用
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148284
M. Forti, L. Millanta, G. Pellicci
{"title":"The role of dispersion in fast wavefronts of power-mains disturbances","authors":"M. Forti, L. Millanta, G. Pellicci","doi":"10.1109/ISEMC.1991.148284","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148284","url":null,"abstract":"The analysis presented relates the transient voltage rate of change to the power main (PM) line attenuation and dispersion (mainly dielectric) characteristics. The initial discontinuity produced by a load connection or disconnection is modified on propagation along the PM line. Attention is confined to differential-mode transients. The response of the line to an ideal step is analyzed to derive limits for the rate of change of the wavefront. The approximate 10 to 90% rise time is derived and FFT computations have been performed for confirmation, as a function of distance along the line from the excitation point. Attention is confined to the incident wave.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"90 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"126421353","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
The tricky coupling of the EMP with a UHF antenna on a mast 电磁脉冲与桅杆上的超高频天线的复杂耦合
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148239
W. Pont
{"title":"The tricky coupling of the EMP with a UHF antenna on a mast","authors":"W. Pont","doi":"10.1109/ISEMC.1991.148239","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148239","url":null,"abstract":"Coupling of the electromagnetic pulse (EMP) to UHF antennas on masts can be misleading, because the resonant frequency of the induced current (and often that of the voltage of the termination) is determined by the structure dimensions (antenna-plus mast) and not by the antenna characteristics. In most cases this frequency is out-band with respect to the UHF-band of the antenna. Measurements were performed to study these coupling effects. The induced voltage waveform on the 50 Omega termination was directly related to the waveform of the current on the outer shield of the cable. Because of the rather small dimensions of the antenna/cable combination, the induced signals were not dependent on the length of the simulated pulse, but only on the rise-time and peak value.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"6 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121300184","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
Absorption losses in seawater for a rectangular electromagnetic pulse 矩形电磁脉冲在海水中的吸收损失
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148220
R.N. Boules
{"title":"Absorption losses in seawater for a rectangular electromagnetic pulse","authors":"R.N. Boules","doi":"10.1109/ISEMC.1991.148220","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148220","url":null,"abstract":"Transient solutions for a class of waveforms in a general lossy medium have been published recently (H.F. Harmuth, 1986). These solutions are expressed in terms of improper integrals and are functions of the conductivity of the medium. Numerical evaluation of these integrals for the case of seawater results in ill-conditioned problems giving rise to computational overflows. An approximate closed-form transient solution valid for propagation of signals in seawater is developed. An electromagnetic signal with the initial time variation of a rectangular pulse with a given width is assumed. This solution is used for the computation of the absorption losses in seawater as a function of propagation distance.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"34 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"125923709","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
Scattering of an obliquely incident plane wave by conducting prolate spheroids 斜入射平面波在长形球体上的散射
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148222
Mengyun Zhai, H. Űberall
{"title":"Scattering of an obliquely incident plane wave by conducting prolate spheroids","authors":"Mengyun Zhai, H. Űberall","doi":"10.1109/ISEMC.1991.148222","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148222","url":null,"abstract":"The computation of the complex eigenfrequencies of prolate spheroids with an obliquely incident plane wave is discussed. The approach applied for these solutions is the geometrical theory of diffraction (GTD). It derives the closure conditions for a creeping wave traveling along the quasi-helix and the second phase matching condition with an azimuthal round of a prolate spheroid. The resulting complex eigenfrequencies agree with those obtained from T-matrix calculation.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"301 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116080526","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
A fully automatic, accurate method for the performance evaluation and calibration of absorber-lined chambers for radiated-emission tests 一种全自动、准确的方法，用于评估和校准辐射发射测试的吸收衬里腔室的性能
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148174
H. Garn, W. Mullner
{"title":"A fully automatic, accurate method for the performance evaluation and calibration of absorber-lined chambers for radiated-emission tests","authors":"H. Garn, W. Mullner","doi":"10.1109/ISEMC.1991.148174","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148174","url":null,"abstract":"Absorber-lined chambers which do not meet the +or-4 dB site acceptability criterion based on normalized site attenuation (NSA) measurements require correction factors for radiated-emission tests. Such correction factors cannot be derived from deviations between measured NSA and standard reference data because the radiation characteristics of actual equipment under test have to be taken into account. The proposed chamber calibration method provides accurate correction factors, which are valid for all typical radiated-emission test situations. These factors allow the chambers to be used for standard radiated-emission tests.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"39 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134203356","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
Some results on interference suppression on electromagnetically dense platforms 电磁密集平台上干扰抑制的一些结果
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148260
K.K. Venskauskas, G.P. Bogomolov
{"title":"Some results on interference suppression on electromagnetically dense platforms","authors":"K.K. Venskauskas, G.P. Bogomolov","doi":"10.1109/ISEMC.1991.148260","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148260","url":null,"abstract":"An interference cancellation system based on theoretical considerations was constructed to suppress interference at receiver inputs induced from one or more high-power transmitters and to permit collection of the receiver and transmitter. The fundamental characteristics and field test performance of the interference cancellation systems have a good possibility of being put into practical use. Results on interference suppression on electromagnetically dense platforms are detailed.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"33 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"134276867","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
Tracking electric field exposure levels through radio frequency dosimetry 通过射频剂量法跟踪电场暴露水平
IEEE 1991 International Symposium on Electromagnetic Compatibility Pub Date : 1991-08-12 DOI: 10.1109/ISEMC.1991.148224
P. Ewing, M. R. Moore, R. Rochelle, R. S. Thomas, R. Hess, B. Hoffheins
{"title":"Tracking electric field exposure levels through radio frequency dosimetry","authors":"P. Ewing, M. R. Moore, R. Rochelle, R. S. Thomas, R. Hess, B. Hoffheins","doi":"10.1109/ISEMC.1991.148224","DOIUrl":"https://doi.org/10.1109/ISEMC.1991.148224","url":null,"abstract":"The radio-frequency (RF) dosimeter developed by the Oak Ridge National Laboratory is a portable, pocket-sized cumulative-dose recording device designed to detect and record the strengths and durations of electric fields present in the work areas of naval vessels. The device measures an integrated dose and records the electric fields that exceed the permissible levels set by the American National Standards Institute. The features of the RF dosimeter are described. Data obtained with the RF dosimeter will be used to determine the ambient field-strength profile for shipboard personnel over an extended time. Readings are acquired and averaged over a 6-min period corresponding to the rise time of the core body temperature. These values are stored for up to six months. The proposed specifications for the RF dosimeter included a sensitivity range of 1 to 1000 mW/cm/sup 2/, an audible alarm for fields >8 mW/cm,/sup 2/, integration of dosage for later readout, autoranging capability, and a possible self-powering capability. The design process, starting with the sensor, is detailed, and the tests completed on the final product are described.<<ETX>>","PeriodicalId":243730,"journal":{"name":"IEEE 1991 International Symposium on Electromagnetic Compatibility","volume":"260 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"1991-08-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"116269838","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
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