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Radio and Electronic Engineer

Issue 4 • Date April 1969

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Displaying Results 1 - 13 of 13
  • Making the journal more useful

    Publication Year: 1969
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (125 KB)

    First Page of the Article
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  • The use of pulse code modulation for point-to-point music transmission

    Publication Year: 1969, Page(s):199 - 207
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1930 KB)

    The advent of pulse code modulation (p.c.m.) techniques heralds the possibility of extremely reliable and completely distortionless distribution and processing of audio signals. In this paper, the basic requirements for audio circuits of broadcast quality are reviewed, and the specification of a p.c.m. system satisfying these requirements is developed. Means for reducing the required number of dig... View full abstract»

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  • An electronically programmable shift register

    Publication Year: 1969, Page(s):209 - 211
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (284 KB)

    A shift register is described, the connections of which can be electronically programmed as desired, causing it to act as a feedback shift register, a multiplier, or as a divider. The characteristic equation of the feedback shift register may be readily altered at high speed, and the polynomial for multiplication or division may be similarly varied. The register may be realized in the form of a mi... View full abstract»

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  • Standards for nuclear electronic equipment

    Publication Year: 1969
    IEEE is not the copyright holder of this material | PDF file iconPDF (159 KB)
    Freely Available from IEEE
  • The design of feedback shift registers and other synchronous counters

    Publication Year: 1969, Page(s):213 - 223
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1082 KB)

    This paper is concerned with digital sub-systems comprising bistable flip-flops connected to a common source of clock-pulses. This configuration, of which the feedback shift register is the most important special case, is useful for the generation of periodic binary codes and sequences. It is assumed that the building-blocks for these circuits are integrated J-K flip-flops and NAND gates, and desi... View full abstract»

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  • Skynet: the British defence satellite communications system

    Publication Year: 1969
    IEEE is not the copyright holder of this material | PDF file iconPDF (655 KB)
    Freely Available from IEEE
  • Some applications of cellular logic arithmetic arrays

    Publication Year: 1969, Page(s):225 - 227
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (319 KB)

    The paper describes two types of full multiplier. These are combinational logic networks based on a cellular structure. Some applications of these multipliers are outlined, including approximation methods for obtaining the reciprocal of a binary number, and for the quotient of two binary numbers. View full abstract»

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  • A multiple-beam high-frequency receiving aerial system

    Publication Year: 1969, Page(s):229 - 235
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (3072 KB)

    The paper describes a system, covering the band 1.5 MHz to 10 MHz, designed to give good beam-forming capability with all-round azimuthal coverage and occupying a much smaller area than a corresponding conventional rhombic aerial system. Although unsuitable for transmitting purposes, it provides, in general, externally noise-limited conditions to receiving equipment. Limited tests indicate, on the... View full abstract»

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  • Conference on 'Lasers and Opto-Electronics'

    Publication Year: 1969
    IEEE is not the copyright holder of this material | PDF file iconPDF (173 KB)
    Freely Available from IEEE
  • Helix antenna for spacecraft

    Publication Year: 1969, Page(s):237 - 240
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (915 KB)

    This paper describes the development and performance of a light-weight, high-gain, high-efficiency, rigid helix antenna and discusses a light-weight deployable helix antenna. The weight of the rigid helix was 016 kg (0.35 lb) and had a measured gain of 16.5 dB at 2.3 GHz. The estimated weight of the deployable helix is 0.06 kg (0.13 lb). Such antenna elements can be used for phased arrays for spac... View full abstract»

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  • A proton resonance magnetic field stabilizer

    Publication Year: 1969, Page(s):241 - 246
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (654 KB)

    An instrument is described which controls the value of the field strength of an electromagnet by comparing the resonance frequency of protons in that field with a reference frequency and acting to decrease the difference between them. The reference is generated by a digital frequency synthesizer which is so arranged that its dials are calibrated directly in field strength. The method by which this... View full abstract»

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  • Matrix tables for the generalized 5-terminal amplifier

    Publication Year: 1969, Page(s):247 - 255
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (494 KB)

    The paper considers the admittance matrices of the generalized 5-terminal amplifier and shows that the more commonly used amplifiers are special cases of the model. It is noted that the single operational amplifiers are equivalent when included in a network. The admittance matrices of a number of familiar amplifier networks are listed in the tables. View full abstract»

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  • Radio engineering overseas

    Publication Year: 1969
    IEEE is not the copyright holder of this material | PDF file iconPDF (161 KB)
    Freely Available from IEEE