IEEE Transactions on Electromagnetic Compatibility

Issue 2 • May 1974

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Displaying Results 1 - 21 of 21
  • Table of contents

    Publication Year: 1974, Page(s): c1
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  • IEEE Electromagnetic Compatibility Group

    Publication Year: 1974, Page(s): c2
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  • Measured Amplitude Distribution of Automotive Ignition Noise

    Publication Year: 1974, Page(s):57 - 63
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (939 KB)

    This paper describes a series of tests conducted 1) to statistically characterize the amplitude distribution of automotive ignition noise, and 2) determine whether such test results can be reproduced. Some tests showed the amplitude distribution to be Weibull and others indicated a log normal distribution. However, under controlled conditions the results obtained from an individual vehicle were qu... View full abstract»

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  • APD Measurements of V-8 Ignition Emanations

    Publication Year: 1974, Page(s):63 - 70
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (3657 KB)

    Amplitude-probability-distribution (APD) data are presented for ignition emanations from V-8 engines of used motor vehicles. Outputs from both single and multiple engines running at 1500 rpm were measured with an omnidirectional antenna over the frequency range from approximately 20 MHz to 1 GHz. In each case, the antenna was oriented similarly with respect to the vehicle(s)-vertical, height 3 m, ... View full abstract»

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  • A Model of HF Impulsive Atmospheric Noise

    Publication Year: 1974, Page(s):71 - 75
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (680 KB)

    Determination of optimal receiver or detector and suboptimal estimator in the presence of additive atmospheric noise depends on the application of a mathematically tractable model of noise. In the tropics the atmospheric radio noise occurring mostly in the burst form above a relatively small continuous background does not deliver energy at a constant rate. This type of noise is non-Gaussian and ha... View full abstract»

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  • The Magnetic Field in the Vicinity of Parallel and Twisted Three-Wire Cable Carrying Balanced Three-Phased Current

    Publication Year: 1974, Page(s):76 - 82
    Cited by:  Papers (10)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1072 KB)

    An analysis of the low-frequency magnetic field in the vicinity of three-wire cable carrying three-phase current is presented. Parallel wire systems and twisted wire systems are considered. Radial and tangential components for the parallel wire system are obtained as a function of the position of the observation point in a polar coordinate system. The magnitude of both components approach equality... View full abstract»

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  • Analysis of the Moebius Loop Magnetic Field Sensor

    Publication Year: 1974, Page(s):83 - 89
    Cited by:  Papers (7)  |  Patents (8)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1146 KB)

    An analysis of the Moebius loop which provides the relationship between magnetic field and output voltage is presented. This analysis accounts for all of the loop electrical phenomena involved over the broad range of frequencies encountered in measurement of fast pulses; specifically, from dc to frequencies corresponding to a loop electrical diameter of from about 6.4 degrees to 12.8 degrees. In t... View full abstract»

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  • Feedline Interference with Dipole Performance Theory and Experiment

    Publication Year: 1974, Page(s):90 - 97
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2428 KB)

    The characteristics of thin-wire, finite-gap λ/2 and λ/4 dipoles fed with a length of two-wire transmission line have been studied using matrix methods [1]-[4]. Transmission line length and gap size have been varied obtaining the complete solution (current distributions, impedance and far field beam patterns) in each case. Significant departures from the ideal dipole characteristic... View full abstract»

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  • Optimum Processing of Antenna Array Signals in the Presence of Discrete Noise Sources

    Publication Year: 1974, Page(s):98 - 105
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1198 KB)

    Previous formulations of the signal-to-noise power ratio (SNR) of an antenna array are shown to fail when a number of monochromatic discrete noise sources smaller than the number of elements in the array are considered in the formulation. It is shown how the performance of the array with respect to SNR may, nevertheless, be optimized using a gain maximization procedure The derivation of the theory... View full abstract»

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  • Antenna Evaluation by Normalized Analogical Technique

    Publication Year: 1974, Page(s):106 - 108
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (584 KB)

    The impedance of a vertical antenna (monopole) normalized to 189 Ω, or its reciprocal, is equal to that of three different antennas in half space. This equality derived by the formulation of a common effective height, and therefrom a common Q, offers a technique for antenna evaluation in electromagnetic compatability (EMC). View full abstract»

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  • A Rational Basis for Determining the EME Capability of a System

    Publication Year: 1974, Page(s):109 - 114
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (1051 KB)

    A logical procedure is presented for determining the electromagnetic compatability (EMC) of a system, based upon an analytical approach developed earlier. The procedure is illustrated using as a system an airplane with a manageable number of electrical-electronic subsystems. The result is a single number which can be used in a weapon system effectiveness equation and is generally useful not only t... View full abstract»

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  • The Multivariate Normal Distribution as Applied to EMC Problems

    Publication Year: 1974, Page(s):115 - 125
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (2105 KB)

    Three basic techniques are presented for determining the probability that signal level and signal-to-interference ratio criterion values are met when the desired and interfering signals are jointly normal at the input to a receiver. In addition, several special case solutions and approximations are given that simplify the problem. These approaches are also applicable to determining the cumulative ... View full abstract»

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  • Two-Dimensional Encoding Masks for Hadamard Spectrometric Imager

    Publication Year: 1974, Page(s):126 - 130
    Cited by:  Papers (4)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (868 KB)

    Techniques to improve upon the design of two-dimensional encoding masks for multiplex Hadamard spectrometric imagers are described. The technique to generate masks based on completely orthonormal codes is described. In some cases, self-supporting masks result which were not previously known. Transmission through the encoding masks (but not necessarily the signal-to-noise ratio) can also be increas... View full abstract»

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  • Walsh Summing and Differencing Transforms

    Publication Year: 1974, Page(s):130 - 134
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (724 KB)

    Analogous to Fourier frequency transforms of the integration and differentiation of a continuous-time function, Walsh sequency transforms of the summing and differencing of an arbitrary discrete-time function have been derived. These transforms can be represented numerically in the form of matrices of simple recursive structure. The matrices are not orthogonal, but they are the inverse of each oth... View full abstract»

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  • A Programmable Walsh Function Generator for Orthogonal Sequency Pairs

    Publication Year: 1974, Page(s):134 - 136
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (567 KB)

    Logic expressions are developed for a Walsh function generator for highly-orthogonal sal and cal sequency pairs, using clocked T-type flip-flop outputs. It is shown that the flip-flop toggle logic functions are generated fully by the rate multiplier type 7497, leading to economical implementation. Thus a generator for up to 63 sequency pairs consists of only seven integrated circuits. View full abstract»

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  • Walsh-Transform Analysis of Discrete Dyadic-Invariant Systems

    Publication Year: 1974, Page(s):136 - 139
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (706 KB)

    This short paper shows how the sampled output of a dyadic-invariant linear system with a given sequency-domain transfer function, in response to a sampled input, can be determined by 1) a term-wise multiplication of the sampled transfer function and the discrete Walsh transform of the sampled input function, followed by an inverse Walsh transform, or 2) a discrete dyadic convolution of the sampled... View full abstract»

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  • Directory of Computer Programs with Applications to EMC

    Publication Year: 1974, Page(s):140 - 141
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract |PDF file iconPDF (467 KB)

    A listing of computer programs with applications to EMC is provided. A short description of the program and the address and telephone number of an individual to contact for further information is also included. View full abstract»

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  • Contributors

    Publication Year: 1974, Page(s):142 - 145
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  • Advance Program of the 1974 IEEE International Symposium on Electromagnetic Compatibility

    Publication Year: 1974, Page(s):146 - 147
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  • G-EMC Policy

    Publication Year: 1974, Page(s): 147b
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  • Institutional listings

    Publication Year: 1974, Page(s): 147c
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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.

The scope of the publication includes, but is not limited to Electromagnetic Environments; Interference Control; EMC and EMI Modeling; High Power Electromagnetics; EMC Standards, Methods of EMC  Measurements; Computational Electromagnetics and Signal and Power Integrity, as applied or directly related to Electromagnetic Compatibility problems; Transmission Lines; Electrostatic Discharge and Lightning Effects; EMC in Wireless and Optical Technologies; EMC in  Printed Circuit Board and System Design.

Full Aims & Scope

Meet Our Editors

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