Radio and Electronic Engineer

Issue 4 • April 1977

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Displaying Results 1 - 7 of 7
  • Millimetric waveguides for telecommunications

    Publication Year: 1977
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (136 KB)

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  • Practical realization of superdirective arrays

    Publication Year: 1977, Page(s):143 - 156
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1629 KB)

    Developments in experimental active and passive superdirective antennas are reviewed. Particular attention is given to the author's work on a two wavelength passive array consisting of nine open-ended waveguide radiators spaced one quarter-wavelength apart. The broadside superdirective patterns for this array are shown and the unnecessary restrictions on the bandwidth, due to the feeding system an... View full abstract»

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  • Domain tip memories

    Publication Year: 1977, Page(s):157 - 163
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1128 KB)

    Recent domain tip efforts, mainly the DOT memory of CMI and BASF and the MOD memory of TECSI and Crouzet have been directed toward lowering the cost per bit through an increase in the bit density on the substrate and more efficient manufacturing processes. Domain tip memory technology takes advantage of the low cost per bit of the basic magnetic film deposited on a glass substrate despite the lowe... View full abstract»

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  • Microwave diffraction for steel strip detection

    Publication Year: 1977, Page(s):164 - 166
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (364 KB)

    A system has been devised and tested successfully in a laboratory mock-up to tackle the problem of detecting the presence of a metal strip in the particularly hazardous environment of a steel works. This paper briefly outlines the environmental problems, and how they defeated more conventional techniques, before moving on to the basic principles involved with using microwave diffraction for detect... View full abstract»

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  • P.A.M.-microwave transmission in coloured gaussian noise environment

    Publication Year: 1977, Page(s):167 - 171
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (900 KB)

    In the current literature, the theoretical analyses which deal with the problem of additive coloured Gaussian noise (c.g.n.) assume that a pre-whitening filter is built into the receiver. This filter modifies the c.g.n. power spectrum density in such a way that, at the input of the threshold comparator, a bandlimited white Gaussian noise (w.g.n.) is obtained. The assumption of a pre-whitening filt... View full abstract»

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  • Optimal codes for digital magnetic recording

    Publication Year: 1977, Page(s):172 - 176
    Cited by:  Papers (30)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (672 KB)

    Channel coding is universally employed in digital magnetic recording to match certain properties of the coded data to the characteristics of the recorder channel. In this paper, attention is focused primarily on the digital sum variation and d.c. content of various codes. The older, more familiar examples, such as NRZ, Manchester, enhanced-NRZ and Miller are compared with the more recently develop... View full abstract»

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  • Marine radar todayߞa review

    Publication Year: 1977, Page(s):177 - 183
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1302 KB)

    The different units making up a marine radar installation are first described, with particular emphasis on the display, where the greatest variety of design has recently appeared. System aspects are then discussed, especially the clutter problem, as well as reliability and maintenance. View full abstract»

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Aims & Scope

Published from 1963 to February 1964 by the British Institution of Radio Engineers and from March 1964 to 1984 by the the Institution of Electronic and Radio Engineers, The Radio and Electronic Engineer published papers describing original research and development in all branches of electronic engineering, as well as critical and interpretive surveys. Short contributions dealing with device technology, circuit techniques and experimental methods were also included.

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