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Radio and Electronic Engineer

Issue 2 • Date February 1968

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Displaying Results 1 - 14 of 14
  • Engineers in hospital

    Publication Year: 1968
    IEEE is not the copyright holder of this material | PDF file iconPDF (139 KB)
    Freely Available from IEEE
  • Change in membership designations

    Publication Year: 1968
    IEEE is not the copyright holder of this material | PDF file iconPDF (146 KB)
    Freely Available from IEEE
  • Institution notices

    Publication Year: 1968
    IEEE is not the copyright holder of this material | PDF file iconPDF (146 KB)
    Freely Available from IEEE
  • System engineering for reliability and ease of maintenance

    Publication Year: 1968, Page(s):67 - 80
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1492 KB)

    The paper discusses the lessons learned from several years of investigation into the performance of a large air traffic control data processing system. To achieve the twin requirements implicit in the title, the time between faults must be made as long as possible, whilst the time required to clear a fault must be reduced to the minimum. The practice of building up some degree of system redundancy... View full abstract»

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  • A high-speed tem junction ferrite modulator using a wire loop

    Publication Year: 1968, Page(s):81 - 82
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (227 KB)

    In this note a new TEM junction switch is described which is based on the three-port junction circulator. Microwave switching is achieved by applying a current waveform through a single wire loop inserted in each of the ferrite disks. In this way the demagnetizing fields of the ferrite shape and the eddy currents in the junction housing are eliminated. The magnetic energy is now determined by the ... View full abstract»

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  • The data handling system for the Ariel III satellite

    Publication Year: 1968, Page(s):83 - 87
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1009 KB)

    The main features of the design and operation of the system are described. The techniques employed in the design and fabrication of the equipment are discussed in relation to the need for reliable operation in orbit,low power consumption and low weight. A brief account is given of the performance of prototype equipments during ground testing, and of the flight equipment since the launch of the sat... View full abstract»

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  • The British Nuclear Energy Society

    Publication Year: 1968
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (120 KB)

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  • A Joint Technical Seminar in India

    Publication Year: 1968
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (120 KB)

    First Page of the Article
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  • The signal noise ratio of quantum detectors in coherent light systems

    Publication Year: 1968, Page(s):89 - 95
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (833 KB)

    The signal noise ratio of a quantum detector is considered under conditions where background illumination is the dominant noise component. It is shown that this is a function of the optical (pre-detector) and post-detector bandwidths. To obtain as general a case as possible, the modulation (information) signal is assumed to be white-noise of a defined bandwidth. Two separate methods of analysis ar... View full abstract»

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  • The Meteorological Office experiment in Ariel III

    Publication Year: 1968
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (760 KB)

    The experiment is designed to measure O2 concentration from 150 km upwards with wide geographical coverage. The attenuation of solar ultra-violet light of 1425 Å to 1490 Å is observed as the satellite enters and leaves the Earth's shadow. The ultra-violet sensors used in the experiment are four gas-filled ionization chambers each of which produces about 10"11 amperes in full sunlight above the m... View full abstract»

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  • V.L.F. observations on Ariel III: a preliminary report

    Publication Year: 1968, Page(s):103 - 108
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (859 KB)

    The very-low-frequency receiver carried by Ariel HI makes synoptic studies at 3-2, 9-6 and 16 kHz of the world-wide distribution and occurrence of natural v.l.f. phenomena such as whistlers, chorus and hiss and also determines the configuration of the wave-field above the ionosphere due to the GBR (Rugby) transmission at 16 kHz. At these three frequencies the peak, mean and minimum signals are mea... View full abstract»

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  • Performance factor of linear two-port active networks

    Publication Year: 1968, Page(s):109 - 113
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (550 KB)

    Callendar's `curve distortion criterion¿, Sd, and a factor, Kr, in his power gain expressions are simply related to the `performance factor¿, n and `inherent performance factor¿, n1 of the linear two-port active network. A lower limit of 10, proposed earlier for the `invariant stability factor¿, s, is shown as equivalent to a lower limit of 4 for Sd. The role of the performance factor in the m... View full abstract»

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  • Discussion on 'gain and stability of transistor amplifiers'

    Publication Year: 1968
    IEEE is not the copyright holder of this material | PDF file iconPDF (147 KB)
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  • Reply to Discussion on 'gain and stability of transistor amplifiers'

    Publication Year: 1968, Page(s):113 - 114
    IEEE is not the copyright holder of this material | PDF file iconPDF (234 KB)
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