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IEEE Transactions on Electromagnetic Compatibility

Issue 3 • Aug. 1975

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  • Table of contents

    Publication Year: 1975, Page(s): c1
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  • IEEE Electromagnetic Compatibility Group

    Publication Year: 1975, Page(s): c2
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  • Guest Editorial

    Publication Year: 1975, Page(s): 121
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  • Time and Amplitude Statistics for Electromagnetic Noise in Mines

    Publication Year: 1975, Page(s):122 - 129
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1910 KB)

    The time and amplitude statistics illustrated are important and useful in describing the time-dependent, measured electromagnetic (EM) noise in mines. They are 1) Allan variance analyses (AVA), 2) interpulse spacing distributions (ISD), 3) pulse duration distributions (PDD), 4) average crossing rates (ACR), and 5) amplitude probability distributions (APD). These statistics are illustrated using a ... View full abstract»

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  • On the Rate of Attenuation of Signals Conducted along Overhead Wires

    Publication Year: 1975, Page(s):129 - 132
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (949 KB)

    A simple expression is presented for the attenuation of signals along an overhead conductor with a ground return. The formula appears to be sufficiently accurate to provide useful estimates of the line attenuation up to frequencies for which the conductor height is of the order of a quarter wavelength. View full abstract»

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  • The RFI Suppression of Phase Controlled Systems with Nonlinear Filters

    Publication Year: 1975, Page(s):132 - 139
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1642 KB)

    Phase controlled systems (PCS) built with nonlinear inductor filters for radio frequency interference (RFI) suppression give irregularites in the radio noise spectrum. These irregularities are important for the measurement of the RFI behavior of the PCS and the design of RFI filters. A theory is given that explains the most important observed effects. It is shown that the theory leads to a more pr... View full abstract»

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  • Study of Transient Voltages in Transit Systems

    Publication Year: 1975, Page(s):140 - 149
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5825 KB)

    Data on transient-voltage environment are needed for the specification. and design of reliable transit-system electrical equipment, especially those containing semiconductor devices. Such data taken on the 600-V dc propulsion systems of the Chicago Transit. Authority (CTA) and the Long Island Railroad (LIRR) are presented. Transient-voltage counters, supplemented by an automatic cathode ray oscill... View full abstract»

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  • Induced Currents and Charges on Thin Cylinders in a Time-Varying Electromagnetic

    Publication Year: 1975, Page(s):149 - 155
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1763 KB)

    The distributions of current and charge induced on the surface of electrically thin metal cylinders by an external electromagnetic field are described by means of theoretically and experimentally determined graphs. Various possible standing-wave patterns are shown including some with unexpected properties such as the coincidence of current and charge minima. A knowledge of these distributions is e... View full abstract»

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  • Currents Induced by a Plane Wave on an Infinite Wire above a Flat Earth

    Publication Year: 1975, Page(s):156 - 158
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (648 KB)

    A general formula for the currents induced in an infinitely long perfectly conducting wire above a finitely conducting ground plane is derived. The effects produced by multiple scattering from e the ground are discussed and are shown to be significant. View full abstract»

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  • Application of Modal Analysis to Braided-Shield Cables

    Publication Year: 1975, Page(s):159 - 169
    Cited by:  Papers (24)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2478 KB)

    Transmission-line equations are derived for a braidedshield cable by modal analysis. The parameters of the braided shield appear in the coefficients as well as in the source terms of the equations. The source terms also depend on the currents and charges on the outer surface of the shield with all the shield's apertures shortcircuited. View full abstract»

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  • On Representations of Walsh Functions

    Publication Year: 1975, Page(s):170 - 176
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1517 KB)

    A new recursive formula for defining Walsh functions on the real line is presented. It leads, in a natural way, to an explicit representation of Walsh futctions. The explicit representation can be identified with. the representation of Walsh functions by the products of Rademacher functions. It can also lead to other representations of Walsh functions in a straight-forward manner. Using the new-fo... View full abstract»

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  • An Algorithm for Computing the Correlation Functions of Walsh Functions

    Publication Year: 1975, Page(s):177 - 180
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (875 KB)

    An algorithm for computing the correlations of Walsh functions is presented. Given indices j and p between 0 and 2n - 1, the algorithm computes the correlation between the jth and kth Walsh-Paley function at time differences t = i2-n, i =0,1,..., 2n - 1. These values specify the correlation completely as it varies linearly between these points. A Fortran program is shown. The time required to comp... View full abstract»

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  • EMP Coupling Analysis Using the Frequency (Transfer Function) Method with the SCEPTRE Computer Program

    Publication Year: 1975, Page(s):181 - 185
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (981 KB)

    The availability of digital computer time and scientific programming languages (such as Fortran) has, resulted in the use of the digital computer for electromagnetic pulse (EMP) coupling analyses. This report describes combining complex frequency domain analysis techniques with the SCEPTRE computer program to evaluate the time response of the current induced on a thin-wire scatterer when the scatt... View full abstract»

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  • Simplification of the Computation of Real Hadamard Transfors

    Publication Year: 1975, Page(s):185 - 188
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1065 KB)

    The computation of a real Hadamard (or Walsh) transform can be simplified by first computing a pseudotransform, employing an easily derived auxiliary matrix each of whose elements is either l or 0 (instead of 1 or -1), and then applyimg se very simple linear corrections to obtain the; desired transform. The auxiliary matrix is not orthogonal, so its square, unlike that of the Hadamard (or Walsh) m... View full abstract»

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  • Time-Correlated Radio-Frequency-Interference Analysis

    Publication Year: 1975, Page(s):188 - 189
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (570 KB)

    Cnventional radio-frequency-interference (RFI) receiversmeasure various characteristics of the incident RPI signals contiouily in time with the capability of selecting the freqency range of interest, the system described here extends the capability of commerclly available RFI receivers to selectively measre RFI at time domain as well. The application: of this technique to the measure of RFI due to... View full abstract»

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  • Shielding Properties of Thick Conducting Cylindrical Shells with an Obliquely Incident Plane Wave

    Publication Year: 1975, Page(s):189 - 191
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (593 KB)

    The shielding properties of a thick circular cylindril shell of finite conductivity is analyzed for the case of an obliquely incident plane wave. The results show that the apparent radius of the cylinder is contracted as compared to the normal incidence case. View full abstract»

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  • Time Domain Shielding Properties of Conducting Cylindrical Shells

    Publication Year: 1975, Page(s):191 - 193
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (633 KB)

    Transient shielding properties of a conducting cylindrical shell with; an EMP incident plane wave are obtained through numerical Fourier transforms of the frequeny domain solution. Anomilous resonances noted in the frequiency doman now convert to-time domain oscillations which may have significace for vulnerability studies. View full abstract»

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  • Acoustic Noise Emanation from EMI Power Line Filter

    Publication Year: 1975, Page(s): 193
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (240 KB)

    In addition to the normal technical requirements for EMI powerline filters, it has been found necessary to impose an audio noise limitation. A program to reduce airborne audio noise on ia typical filter is discussed, a test setup is developed, and a specification for control of this parameter is recommended. View full abstract»

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  • Comments on "Sinusoids Versus Walsh Functions"

    Publication Year: 1975, Page(s):194 - 195
    Cited by:  Papers (5)
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  • Contributors

    Publication Year: 1975, Page(s):195 - 197
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  • An Investment in Your Professional Future

    Publication Year: 1975, Page(s): 197-b
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  • G-EMC Policy

    Publication Year: 1975, Page(s): 197-d
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  • Institutional listings

    Publication Year: 1975, Page(s): 197e
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Aims & Scope

IEEE Transactions on Electromagnetic Compatibility publishes original and significant contributions related to all disciplines of electromagnetic compatibility (EMC) and relevant methods to predict, assess and prevent electromagnetic interference (EMI) and increase device/product immunity.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Prof. Ing. Antonio Orlandi 
University of L'Aquila
Email: antonio.orlandi@univaq.it