By Topic

Electromagnetic Compatibility, IEEE Transactions on

Issue 1 • Date Feb. 1985

Filter Results

Displaying Results 1 - 17 of 17
  • Table of contents

    Publication Year: 1985 , Page(s): c1
    Save to Project icon | Request Permissions | PDF file iconPDF (791 KB)  
    Freely Available from IEEE
  • IEEE Electromagnetic Compatibility Society

    Publication Year: 1985 , Page(s): c2
    Save to Project icon | Request Permissions | PDF file iconPDF (211 KB)  
    Freely Available from IEEE
  • Analysis of a TEM Cell with Septum on a Dielectric Slab

    Publication Year: 1985 , Page(s): 1 - 6
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (976 KB)  

    A quasi-TEM approach based on conformal transformation is used for the determination of the characteristic impedance of a rectangular coaxial line (TEM cell) having a symmetrically located inner conductor (septum) supported on a dielectric slab of equal width. The method of determination of the capacitance of the dielectric-filled portion is discussed. The results on characteristic impedance for two values of dielectric constant are presented. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Impedance of the Residential Power-Distribution Circuit

    Publication Year: 1985 , Page(s): 6 - 12
    Cited by:  Papers (54)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1049 KB)  

    This paper presents measurements and analysis of the impedance of residential power-distribution circuits at frequencies from 5 to 20 kHz. These frequencies are used by systems such as distribution-line carriers which use the power distribution circuit as a communications medium. Residential impedances are determined by the distribution transformer secondary windings, entrance cables, house wiring, and electrical loads. Impedance measurements of these components and measurements at four residences are presented. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Quasi-Static Electric- And Magnetic-Field Penetration of a Spherical Shield through a Circular Aperture

    Publication Year: 1985 , Page(s): 13 - 17
    Cited by:  Papers (5)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (662 KB)  

    Low-frequency electromagnetic penetration of a closed shielded region through an aperture in the shield is considered by investigating the canonical problems in which the shield is a perfectly conducting spherical shell, the aperture is circular, and the applied field is uniform. Each of these problems reduces to that of solving a set of dual series equations. The solutions of previously solved problems are presented as well as those of heretofore unsolved problems. The penetration of the shielded region is measured by the ratio of the field at the center of the shell to the external applied uniform field. It has been previously shown that these ratios are the same for an applied magnetic field parallel to the symmetry axis and an applied electric field perpendicular to this axis. In this paper it is shown that the ratios are the same for an applied electric field parallel to the axis when the shell is uncharged and for an applied magnetic field perpendicular to the axis. In addition, a new approach to the solution of a certain class of dual series equations is found and exploited in the solution of one of the canonical problems. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Radio-Frequency Current Through the Feet of a Grounded Human

    Publication Year: 1985 , Page(s): 18 - 23
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1098 KB)  

    Radio-frequency currents through the feet of grounded human subjects have been measured, from 0.5 to 10 MHz, using a TEM-cell exposure system. The RF current is directly proportional to both frequency f and electric field, with an average constant of proportionality of 344 ± 14 (4 data) ¿/(V· m-1·MHz). For the maximum exposures recommended by ANSI standard C95.1¿1982, the ankle specific absorption rates in some cases significantly exceed the ANSI limit of 8 W/kg. When the effects of footwear and near-field exposures are taken into account, ankle absorption rates will likely not exceed 8 W/kg. These current measurements permit the extension of the f2 law for human whole-body absorption rates from the HF band down to 60 Hz. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Vectorcardiographic Data Compression via Walsh And Cosine Transforms

    Publication Year: 1985 , Page(s): 24 - 34
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1563 KB)  

    In this study the use of two-dimensional transforms for compressing human vectorcardiographic (VCG) data is investigated. The VCG signal is two-dimensional in nature, one dimension consisting of the spatial axes and the other consisting of the samples in time along a particular spatial axis. The discrete cosine transform (DCT) and the Walsh-Hadamard transform (WHT) were used. The variance criterion was employed for selecting components to be retained. The training set was formed from 225 VCG records from three different diagnostic classes. The DCT yielded compression ratios from 3:1 to 5:1, while compression ratios of around 2:1 were obtained with the WHT. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Classification of Vectorcardiograms Using Walsh And Cosine Orthogonal Transforms

    Publication Year: 1985 , Page(s): 35 - 40
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1061 KB)  

    In this study, the usefulness of two-dimensional transforms in classifying human vectorcardiograms is investigated. The transforms used are the Walsh-Hadamard (WHT) and the discrete cosine (DCT). Experimental results included in the paper demonstrate that about 80-85 percent correct classification may be achieved. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Computationally Efficient Method of Calculations Involving Lumped-Parameter Transmission-Line Models

    Publication Year: 1985 , Page(s): 41 - 43
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (509 KB)  

    Computations involving ladder networks may be tedious if many elements are present. Lumped-circuit iterative models are traditional approximations of transmission lines and have been used well before [1]. The number of sections used to approximate the transmission line is limited by the computational expense involved in analyzing a high-order circuit. This paper develops a closed-form expression for the voltage transfer ratio for ladder networks as a function of the number of sections. Presently, lumped-circuit models [1]-[5] are analyzed using loop-current or node-voltage equations, both time-consuming and costly. The closed-form expression developed in this paper allows one to perform rapid circuit calculations for two-conductor lines, even if the number of sections is large (e.g., 50 sections or more) with very little computational effort. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electrostatic Shielding of a Charged Conducting Sphere by a Fine-Mesh Grounded Screen

    Publication Year: 1985 , Page(s): 43 - 47
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (789 KB)  

    The physical system considered is a charged conducting sphere held at a fixed absolute potential via a battery or some other power source. Another sphere, concentric with and larger than the first, is fabricated out of a fine-mesh screen and this outer screen is grounded. The objective is to calculate the effectiveness of the screen in reducing the electrostatic field at points outside of the system. A derivation based on elementary principles of electrostatics will show that the shielding effectiveness of the screen can be expressed in terms of the separation between the two spheres and another quantity, represented in the paper by B, that is an intrinsic property of the screen. Approximations will be used that require the screen to have a mesh size that is fine compared to other dimensions of the system. In particular, characteristic distances between mesh wires must be smaller (by an amount that was not numerically evaluated in this paper) than the separation between the charged sphere and the spherical screen shield. For a sufficiently simple mesh weave, B can be calculated. More generally, B for a given screen can be measured by measuring the capacitance per unit area and separation between a flat piece of the screen and a parallel metal plate. This method of measuring B is described in the report. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Contributors

    Publication Year: 1985 , Page(s): 48 - 49
    Save to Project icon | Request Permissions | PDF file iconPDF (3532 KB)  
    Freely Available from IEEE
  • 1984 Technical Reviewers

    Publication Year: 1985 , Page(s): 50 - 51
    Save to Project icon | Request Permissions | PDF file iconPDF (156 KB)  
    Freely Available from IEEE
  • International Aerospace And Ground Conference on Lightning And Static Electricity

    Publication Year: 1985 , Page(s): 52 - 53
    Save to Project icon | Request Permissions | PDF file iconPDF (168 KB)  
    Freely Available from IEEE
  • 10 Years of Service to the EMC Community

    Publication Year: 1985 , Page(s): 54
    Save to Project icon | Request Permissions | PDF file iconPDF (100 KB)  
    Freely Available from IEEE
  • IEEE copyright form

    Publication Year: 1985 , Page(s): 55 - [55]-a
    Save to Project icon | Request Permissions | PDF file iconPDF (284 KB)  
    Freely Available from IEEE
  • EMC Society Policy

    Publication Year: 1985 , Page(s): [55]-b
    Save to Project icon | Request Permissions | PDF file iconPDF (163 KB)  
    Freely Available from IEEE
  • Institutional listings

    Publication Year: 1985 , Page(s): 55c
    Save to Project icon | Request Permissions | PDF file iconPDF (863 KB)  
    Freely Available from IEEE

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