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IEE Proceedings A - Physical Science, Measurement and Instrumentation, Management and Education - Reviews

Issue 2 • March 1984

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Displaying Results 1 - 7 of 7
  • Dual 4-port bidirectional network analyser with vector-null detection for the frequency range 1-800 MHz

    Publication Year: 1984, Page(s):85 - 92
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1193 KB)

    The network analyser described in the paper is an extension of a technique published in a previous paper by the authors. A number of limitations of the original system described are overcome by the use of a bidirectional four-channel superheterodyne detection system with vector-null detection. Advantages of the bidirectional analyser over the unidirectional analyser are discussed, and a comparison... View full abstract»

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  • Novel feedback capacitor-type gauge

    Publication Year: 1984, Page(s):93 - 95
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (453 KB)

    Feedback has been applied to a capacitor type of noncontacting dimensional comparator. This leads to greatly simplified use because the device is inherently linear and the calibration is independent of electrode area. The use of nulling gives good accuracy, and this is obtainable at low cost because the performance depends critically on only a few components of the device. View full abstract»

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  • Book review: Materials and Apparatus in Quantum Radiophysics

    Publication Year: 1984
    IEEE is not the copyright holder of this material | PDF file iconPDF (158 KB)
    Freely Available from IEEE
  • Generation of blastwaves from confined electrical discharges

    Publication Year: 1984
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (744 KB)

    Fast-response pressure transducers have been used to record the initial series of Shockwaves produced by electrical discharges of between 10 and 30 mm in length in argon, air and sulphur hexafluoride contained in a wedge-shaped vessel. The complex series of pressure peaks in the wave train have been identified as arising from the reflection of the original cylindrically expanding front with the up... View full abstract»

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  • Ignition of flammable gas mixtures by X-band microwave discharges

    Publication Year: 1984, Page(s):103 - 110
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1200 KB)

    Mixtures of hydrogen, ethylene, propane and methane with air at NTP were ignited by sparks striking between electrodes in a cavity tuned to resonance at 9.4 GHz. The cavity was formed from a section of waveguide sealed by dielectric windows, and fed by a pulsed radar transmitter. The envelope of the radar pulse waveform reflected from the cavity was monitored using a detector and a transient data ... View full abstract»

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  • Electron field emission from copper with various thicknesses of oxide film

    Publication Year: 1984, Page(s):111 - 117
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (944 KB)

    A new, nondestructive method for electron field emission measurement is presented, which, in principle, completely avoids the need for deleterious multiple sparking of the surface required by previous workers and which allows electron field emission to be measured at its origin; i.e. with only a few electrons leaving the cathodes per second. The results obtained on oxide-covered copper cathodes wi... View full abstract»

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  • Development and field evaluation of a lightning earth-flash counter

    Publication Year: 1984, Page(s):118 - 124
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (966 KB)

    The lightning-flash counters of the 1950s were difficult to calibrate as far as their range was concerned, and their discrimination against inter- and intracloud flashes (now referred to as cloud flashes) was found to be poor. Research in South Africa over the past fifteen years was thus concentrated on improving the response of counters to earth flashes and on their calibration. This resulted in ... View full abstract»

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Aims & Scope

Published from 1980-1988, IEE Proceedings A contained significant and original contributions on physical science, measurement and instrumentation, management and education, and reviews (specially commissioned articles written by specialists reviewing topics in depth for the professional electrical and electronics engineer).

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