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Electromagnetic Compatibility, IEEE Transactions on

Issue 3 • Date Aug. 1984

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Displaying Results 1 - 16 of 16
  • Table of contents

    Publication Year: 1984 , Page(s): c1
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  • IEEE Electromagnetic Compatibility Society

    Publication Year: 1984 , Page(s): c2
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  • Short Practical Nonarchival Articles

    Publication Year: 1984 , Page(s): 101
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  • An Electromagnetic Near-Field Sensor for Simultaneous Electric and Magnetic-Field Measurements

    Publication Year: 1984 , Page(s): 102 - 110
    Cited by:  Papers (48)  |  Patents (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1855 KB)  

    This paper describes the theory of a single sensor to perform simultaneous electric and magnetic near-field measurements. The theory indicates that it is possible to measure the magnetic-loop and electricdipole currents using a loop antenna terminated with identical loads at two diametrically opposite points. The theory also indicates that it is possible to choose an ideal load impedance for achieving equal electric and magnetic-field responses of the loop. Preliminary experiments have been performed using a plane-wave field to verify these results. View full abstract»

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  • Design of Absorber-Lined Chambers for EMC Measurements Using a Geometrical Optics Approach

    Publication Year: 1984 , Page(s): 111 - 119
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1593 KB)  

    Absober-lined chambers (ALC's) have been found useful for EMC measurements over an extremely wide frequency range. However, only limited information about the field structure inside ALC's can be efficiently determined by measurements, while the characteristics of the rough absorbing surface do not render their analysis amenable to formal methods. The computation of field structure as a function of various parameters must thus resort to empirical modeling. A simple computational technique presented here predicts fields inside ALC's to a good approximation. Use is made of the Geometrical Theory of. Optics (GO). The absorber material is empirically modeled by its reflectivity as a function of frequency and angle of incidence. To establish the validity of the technique, computed results are compared to measured data. The methodology is then extended to compute fields inside a variety of ALC configurations. A study of the effect of shape, size, and absorber characteristics on these fields is presented to demonstrate the utility of the technique as a tool for ALC design purposes. View full abstract»

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  • Effects of CW Interference on the Carrier Tracking Loop of the Deep Space Network

    Publication Year: 1984 , Page(s): 120 - 128
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (848 KB)  

    The effects of CW interference on a phase-locked loop (PLL) have been examined in many papers. None of these included the effects of a bandpass limiter (BPL) preceding the phase-locked loop. This paper extends some of those analyses to include the effects of a BPL and applies the results to the carrier tracking loop of a Deep Space Network (DSN) receiver, which employs a second-order phase-locked loop preceded by a BPL. The DSN receiver is used for deep space communications and is often subject to potential interference. Experimental data and computer simulation results are presented. View full abstract»

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  • Bounds of Uncertain Interference Between Closely Located Antennas

    Publication Year: 1984 , Page(s): 129 - 133
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (677 KB)  

    The uncertainty in the characteristics of two antennas located close together and operating at different frequencies is considered. The formulations of antenna performance indexes on one antenna by admittance parameters are obtained with respect to the load impedance at the feed point of the other antenna. All the antenna performance indexes obtained here are expressed as the ratio of quadratic functions of the load impedance, and exact formulas are derived for the quick calculation of their bounds with respect to the load impedance which is uncertain and changes with frequency. View full abstract»

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  • Video Compression Using Conditional Replenishment and Motion Prediction

    Publication Year: 1984 , Page(s): 134 - 142
    Cited by:  Papers (1)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3577 KB)  

    A study of a low-rate monochrome video compression system is presented in this paper. This system is a conditional-replenishment coder that uses two-dimensional Walsh-transform coding within each video frame. The conditional-replenishment algorithm works by transmitting only the portions of an image that are changing in time. This system is augmented with a motion-prediction algorithm that measures spatial displacement parameters from frame to frame, and codes the data using these parameters. A comparison is made between the conditional-replen-ishment system with, and without, the motion-prediction algorithm. Subsampling in time is used to maintain the data rate at a fixed value. Average bit rates of 1 bit/picture element (pel) to 1/16 bit/pel are considered. The resultant performance of the compression simulations is presented in terms of the average frame rates produced. View full abstract»

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  • Reliability Improvement in Worldwide Noise Predictions

    Publication Year: 1984 , Page(s): 143 - 144
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (410 KB)  

    It is suggested that two noise grade charts may be given, one for sunspot maxima and the other for sunspot minima. Predictions may be given for spot hours along with the corresponding frequency characterisitics. Noise data may be treated separately on a regional basis or giving noise predictions at places where considerable information on noise is available. View full abstract»

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  • Comments on " Further Experimental Verification of Frequency-Domain Multiconductor-Transmission-Line Characterization"

    Publication Year: 1984 , Page(s): 144
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  • Correction to "A Simple Model for Weakly Coupled Lossy Transmission Lines of Finite Length"

    Publication Year: 1984 , Page(s): 145
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  • Contributors

    Publication Year: 1984 , Page(s): 146
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  • IEEE 1985 International Symposium on Electromagnetic Compatibility

    Publication Year: 1984 , Page(s): 147
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  • Now is the Best Time to Join our Society

    Publication Year: 1984 , Page(s): 147-a
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  • EMC Society Policy

    Publication Year: 1984 , Page(s): 147-b
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  • Institutional listings

    Publication Year: 1984 , Page(s): 147c
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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