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Radio and Electronic Engineer

Issue 4 • April 1970

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Displaying Results 1 - 9 of 9
  • Innovation and industrial expansion

    Publication Year: 1970
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (277 KB)

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  • The synthesis of asynchronous digital pattern generators

    Publication Year: 1970, Page(s):179 - 184
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (699 KB)

    The paper describes a method for designing circuits which generate predetermined digital waveforms when triggered by an input. To do this an asynchronous sequential machine is causedto move through a number of states under its own control. Individual portions of the waveform can be adjusted without interfering with the rest of the output sequence. The circuit can also be made to give different out... View full abstract»

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  • The design of broadband light modulators

    Publication Year: 1970, Page(s):185 - 192
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1319 KB)

    Curve sets are presented for the design of collinear travelling-wave light modulators using KDP, KDA, ADP(r63), ADP(r41), LiNbO3, LiTaO, as electro-optic materials. The transverse dimensions ratio, the characteristic impedance and the bandwidth-length product are plotted versus the velocity mismatch. The attenuation of modulating signal is plotted versus mismatch for the peak voltage and modulatin... View full abstract»

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  • An intermodulation phenomenon in the ring modulator

    Publication Year: 1970, Page(s):193 - 197
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (465 KB)

    Analysis of intermodulation distortion effects in diode modulators by `modulating function¿ techniqueshas, for some time, been recognized to be applicable where the diodes can be represented by a bi-linear d.c. characteristic in which the change of state from blocking to conduction takes place at zero bias. Experiments on ring modulators have shown, however, that predictions based on this diode m... View full abstract»

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  • The radiation field of the short backfire antenna

    Publication Year: 1970, Page(s):198 - 200
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (538 KB)

    The mathematical expressions for the far-field radiation pattern are derived for a short backfire antenna. By assuming that the plane conductors in the antenna are infinite in extent, a multiple image system is established as a first approximation in the derivation. Some calculated patterns are presented to illustrate the derived results and compare with the experimental E- and H- patterns given b... View full abstract»

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  • Influence of reflecting surface characteristics on a laser rangefinder

    Publication Year: 1970, Page(s):201 - 208
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (898 KB)

    The laser rangefinder can enable the distance of remote objects, such as satellites, to be determined with an accuracy of 1.5 m up to a distance of 3000 km. This performance level accrues from three main factors: (i) the directivity of the laser light, which allows the emitted power to be concentrated in a very narrow cone; (ii) the high detection capability of up-to-date photomultipliers, which c... View full abstract»

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  • On the linearity of a thermistor thermometer

    Publication Year: 1970, Page(s):209 - 214
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (545 KB)

    A general approach to linearizing a thermistor thermometer over limited temperature ranges is developed. Theoretical and experimental results are presented for various typical operating modes. Effects of detector resistance, probe cableresistance and off-balance calibration on the linearity and sensitivity of the device are investigated. View full abstract»

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  • Determination of the parameters of an electrodynamic transducer

    Publication Year: 1970, Page(s):215 - 223
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1051 KB)

    One of the most interesting areas of contact between the studies of electrical and mechanical systems is that exemplified by the electrodynamic transducer. In such a device the electrical and mechanical aspects profoundly influence one another, so that in problems of performance and design it is frequently necessary to measure the parameters of the system. The electrodynamic transducer, whose mech... View full abstract»

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  • Potential integral theory for a log-periodic dipole array of n, parallel, non-staggered

    Publication Year: 1970, Page(s):224 - 232
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (770 KB)

    A new and more accurate theory for the log-periodic dipole array is presented which takes account of all mutual interaction effects between the elements of the array. The new theory is used to compute the performance of a 10-element log-periodic dipole array, which together with conventional theory is compared with experimental results for the array. The advantages of the new theory over the conve... 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.

Full Aims & Scope