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Radio and Electronic Engineer

Issue 2 • February 1969

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Displaying Results 1 - 8 of 8
  • Lasers and opto-electronics

    Publication Year: 1969, Page(s):65 - 68
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (371 KB)

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  • A review of progress in underwater acoustics

    Publication Year: 1969, Page(s):69 - 84
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2139 KB)

    The whole field of civil work in sonar and underwater acoustics is reviewed, discussing in particular the problems of short-range highresolution sonar and sonar for fisheries, the influence of micro-electronics on sonar philosophy, the growing importance of the exploitation of nonlinear acoustic wave interactions in sonar applications, and propagation, transducers and arrays. Civil applications of... View full abstract»

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  • Progress in on-line control by computer

    Publication Year: 1969, Page(s):85 - 94
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2691 KB)

    The paper presents an account of the development of industrial process control by computer. Some of the control functions carried out by computer are described, with examples from a number of industrial processes. The special features of digital equipment for on-line industrial use are examined. In particular, reliability and fail-safe aspects are emphasized. Some of the methods used and problems ... View full abstract»

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  • Some electronic logic circuits for serial-parallel arithmetic

    Publication Year: 1969, Page(s):95 - 98
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (354 KB)

    In one form of rapid binary multiplier the number which is to be multiplied is presented serially to a controlled shift register. The multiplier must be presented in parallel to obtain the binary product. It controls the function of the register so that the product is generated serially from it. A variant of this type of multiplier is described in which the control logic is regarded as a recogniza... View full abstract»

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  • Elimination of character smear on labelled plan displays

    Publication Year: 1969
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2464 KB)

    Alpha-numeric characters are used to identify radar targets on a p.p.i. display for air traffic control. Normally when using medium- to long-persistence phosphor on the display c.r.t., objectional smear results as alpha-numeric characters are moved. A technique for writing alphanumeric characters is described which reduces the effect of smear by use of interlace-written monoscope alpha-numerics an... View full abstract»

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  • Two-port representation of multi-node networks by matrix partitioning

    Publication Year: 1969, Page(s):109 - 116
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (528 KB)

    A unified approach to linear circuit analysis is described which apart from its simplicity reduces the time required for circuit analysis on an undergraduate electronics course. Representation of a network by its indefinite admittance matrix is well established and for a w-node network would result in a n × n matrix. Reduction of this matrix to a 2 × 2 matrix is described and an easy to memorize... View full abstract»

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  • The Maxson multi-beam antenna: theory and design for non-interacting beams

    Publication Year: 1969, Page(s):117 - 129
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1692 KB)

    A multi-beam antenna known as the Maxson antenna is described. It consists of a linear array of elements fed in a serial fashion by a matrix of waveguide directional couplers. The antenna designed produced two 1° beams and operated over a 10% bandwidth at C-band. The feeder coupling matrix was designed to produce no interaction between beams. Limits on orthogonal and non-orthogonal beam-shapes an... View full abstract»

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  • The Nucleonic Instrumentation Conference and Exhibition

    Publication Year: 1969, Page(s):130 - 132
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (470 KB)

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