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Canadian Journal of Electrical and Computer Engineering

Issue 1 • Feb. 1990

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Displaying Results 1 - 13 of 13
  • Canadian Journal of Electrical and Computer Engineering - Front cover

    Publication Year: 1990, Page(s): c1
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  • Inside front cover

    Publication Year: 1990, Page(s): c2
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  • Table of contents

    Publication Year: 1990, Page(s): 1
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  • President's statement

    Publication Year: 1990, Page(s): 2
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  • Constitution

    Publication Year: 1990, Page(s):3 - 4
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  • Design of millimetre-wave diplexers with optimized H-plane transformer sections

    Publication Year: 1990, Page(s):5 - 8
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1975 KB)

    A new millimetre-wave integrated diplexer arrangement is introduced utilizing metal insert channel filter technology and H-plane waveguide matching configurations. Due to a rigorous and efficient field theory method, special waveguide transformer sections are optimized which compensate for field distortions within the filter bandwidths. Since higher-order mode interactions are advantageously taken... View full abstract»

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  • Parabolic cylindrical surfaces employed as line sources and their use for illuminating conical reflectors

    Publication Year: 1990, Page(s):9 - 15
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1093 KB)

    The properties of line sources simulated by a parabolic cylindrical surface utilizing a point source are investigated. The factors controlling the cross-polarization and the means for elimination of the aperture blockage are also identified and studied. The line source is then used to illuminate a conical reflector with a 90° vertex angle. The performance of the resulting dual reflector sys... View full abstract»

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  • Improving the accuracy of the Euclidean distance classifier

    Publication Year: 1990, Page(s):16 - 17
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1630 KB)

    The Euclidean distance (ED) classifier has the advantage of simplicity in design and fast computational speed, but has poor classification accuracy. Using a new feature normalization technique and feature weighting, a substantial increase in accuracy is obtained with no significant increase in computational cost or complexity of design. View full abstract»

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  • Some texture measures for image segmentation

    Publication Year: 1990, Page(s):18 - 21
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6182 KB)

    Presents three quickly computable texture measures for image segmentation. The application of the measures in the partitioning of some test images produced encouraging results; in addition, the accuracy of segmentation showed improvement with increasing size of characterization window. View full abstract»

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  • Edge enhancement in digital images using phase contrast filtering

    Publication Year: 1990, Page(s):22 - 26
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5413 KB)

    An approach, termed phase contrast filtering (PCF), for the edge enhancement of digitized gray-scale images is presented. The design technique which realized these PCF filters as 2-D recursive high-pass digital filters is described in detail. Sample results are provided with qualitative comparison to the commonly used gradient operator methods. View full abstract»

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  • A three-phase solid-state voltage compensator system

    Publication Year: 1990, Page(s):27 - 36
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7735 KB)

    A three-phase solid-state voltage compensator system which employs a three-phase pulse-width-modulated (PWM) voltage-source inverter is presented and analyzed. This system can compensate for undervoltage, overvoltage and voltage unbalances produced by the AC mains. It also significantly improves the AC mains input power factor and substantially reduces any line-current harmonic generated by nonlin... View full abstract»

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  • [Back inside cover]

    Publication Year: 1990, Page(s): c3
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  • [Back cover - [advertisement]]

    Publication Year: 1990, Page(s): c4
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Aims & Scope

The role of the Canadian Journal of Electrical and Computer Engineering is to provide scientific and professional activity for its members in Canada, the CJECE complements international journals and will be of particular interest to anyone involved in research and development activities in the field of electrical and computer engineering.

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Meet Our Editors

Editor-in-Chief
Dr. Shahram Yousefi
Dept. of Electrical and Computer
     Engineering
Queen's University