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Electromagnetic Compatibility, IEEE Transactions on

Issue 3 • Date Oct. 1964

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Displaying Results 1 - 16 of 16
  • Table of contents

    Page(s): c1
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  • IEEE Electromagnetic Compatibility Group

    Page(s): c2
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  • Papers for the Transactions on Electromagnetic Compatibility

    Page(s): i
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  • The Impacts on Management of Electromagnetic Compatibility

    Page(s): 1 - 4
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    Science, the world over, is randomly pushing the frontiers of electromagnetic incompatibility into all disciplines with no known attempt being made to coordinate this work or evaluate what is happening. The result is an extending rash of technical side-effects, many entirely unexpected, in an increasing number of disciplines and environments. These are beginning to plague both originators and users and to present serious problems to management. With new sources of electromagnetic and electrostatic energy now often exceeding both natural and man-made thresholds, these technical side-effects are beginning to show up as mutations in biological fields, changes in chemical solutions, and metallurgy reacting to environments not in the textbooks. The military is already studying these technical side-effects which it calls radiation hazards, or RAD HAZ. But there are also nontechnical side-effects beginning to show up in the three "Ls," Legal, Labor and Legislative, which are of more concern to management than to technical personnel. It is these three which are to be discussed in this paper. View full abstract»

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  • Classes of Frequencies Free of Mutual Interference: Elements of a Theory of Frequency Assignments

    Page(s): 5 - 14
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    The mutual interference chart (MIC) gives the compatibility that exists between the channels of a radio set. This property of the chart is used to determine classes of frequencies that are compatible (in the sense of freedom from mutual interference) with given transmitting or receiving frequencies. The approach is based on the elementary theory of classes. It is shown that from the chart two categories of fundamental classes can be defined: those classes that contain undesired frequencies giving rise to interference in the presence of a given desired frequency and those classes that contain desired frequencies which in the presence of a given undesired frequency are subject to interference. The classes of compatible frequencies resulting from these definitions are determined for simple circuits containing one or more duplex channel terminals in various configurations. A set of classes characterizes each circuit; if the set is solved, it leads to classes of interference free frequencies for it. Some results obtained in the extension of the theory to more complex circuits are briefly mentioned. The logical extension of the results, surprisingly, lead to a relative simple solution of the problem of assignment. View full abstract»

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  • Automotive Ignition Interference

    Page(s): 15 - 20
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    The basic mechanism of electromagnetic interference generated by automotive ignition systems and the nature of this interference are discussed. Various methods of ignition interference suppression are reviewed. The mechanism of interference suppression by ferrite core ignition cable is explained from the magnetic core loss mechanism point of view. View full abstract»

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  • A Low-Frequency Line Impedance Stabilization Network for Measuring Conducted Radio Interference

    Page(s): 21 - 24
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    This paper describes the design and construction of a low-frequency line impedance stabilization network with reliable stabilizing properties and high-power handling capacity, usuable from 15 kc to 10 Mc. The design was initiated to meet the need to investigate low-frequency conducted radio interference. Its design, characteristics, construction, and operation are discussed. View full abstract»

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  • Grated Reflector Antennas for Spurious Radiation Reduction

    Page(s): 25 - 29
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    A method of reducing the radio frequency interference due to radiation at spurious frequencies by utilizing the frequency sensitivity of grating reflectors is examined. A technique is presented whereby the attenuation in a radial wedge waveguide operating beyond cutoff may be calculated. View full abstract»

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  • Equipment for Measurement of Spurious Emissions in Waveguide

    Page(s): 30 - 37
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    A new equipment that measures multimode spurious emissions in waveguide has been developed. The measurement is performed by averaging the power coupled by a large number of short electric-field probes located on the periphery of an enlarged section of waveguide. The equipment has been used to measure multimode power in S-band waveguide at frequencies between 3 and 10 Gc with an accuracy of ±1 db. A smaller equipment has also been developed with a measurement accuracy of ±3 db up to 15 Gc. View full abstract»

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  • A Method of DF Error Correction

    Page(s): 38 - 41
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    The problem of search with instruments having systematic error is examined and found to be a function of the logarithmic spiral. The case of rectangular constrictions of the search pattern is explored. Extremely simple methods of computing the sought location are disclosed. Description is in terms of locating a transmitting source. View full abstract»

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  • On the Generation of Mutual Interference Matrices

    Page(s): 42 - 48
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    This paper is concerned with the presentation of an algorithm for the construction and display of a mutual interference chart of any size from a list of interference lines belonging to any paired transmitter and receiver. Such charts have found use in procedures for assignment of noninterfering frequencies in a communication network. This algorithm is primarily concerned with the interpretation and conversion of lines of interference, having an arbitrary width, from a continuous frequency space to a discrete integer space represented by a mutual interference chart. The widths of the interference lines are related to equipment frequency guardbands. The discrete integer space is related to equipment channel and band numbers. The method of construction is proved to be consistent with respect to element value assignments. View full abstract»

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  • Methods for Predicting Interference Effects in Tracking Radars

    Page(s): 49 - 57
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    Presently, modeling techniques have been established for radio frequency interference prediction in search radars. Modeling techniques for the special group of radars, classified as tracking radars, are relatively new and require further development before an adequate prediction model can be realized. The nature and aspect of a tracking radar prediction model depends upon the various forms of degradation that the system experiences in the presence of an interference environment. This degradation is dependent upon the functional mode of operation, search, acquisition, and track. The corresponding prediction techniques are also dependent upon these functional modes. This paper presents the results of an analysis to determine the effects of interference on tracking radars and to derive methods for designing mathematical models that can be used for predicting the effects. View full abstract»

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  • Considerations in the Design of Bond Straps

    Page(s): 58 - 65
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    The concept of a bond strap is discussed along with the significant parameters involved in its design. A logical approach to design is given along with formulas that may be used to approximate the bond parameters. Several calculations are included to show orders of magnitude that may be expected for R, L, and C, in addition to impedance, at frequencies up to 1 Gc. A summary table shows the effects of increases in basic parameter values versus dimensional variations. View full abstract»

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  • Contributors

    Page(s): 66 - 70
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  • G-EMC Policy

    Page(s): 70-a
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  • Institutional listings

    Page(s): 70b
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Aims & Scope

IEEE Transactions on Electromagnetic Capability 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
Professor Farhad Rachidi
Swiss Federal Institute of Technology (EPFL)
EMC Laboratory
CH-1015 Lausanne
Switzerland
Phone: +41 (0) 21 693 26 20 (direct)
+41 (0) 21 693 26 61 (secretariat)
Fax: +41 (0) 21 693 46 62
Email: Farhad.Rachidi@epfl.ch
url: http://emc.epfl.ch