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Electrical Engineers, Proceedings of the Institution of

Issue 8 • Date August 1963

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Displaying Results 1 - 25 of 31
  • Design of wide-band degenerate parametric amplifiers for 3100 Mc/s

    Publication Year: 1963, Page(s):1299 - 1303
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (553 KB)

    Two degenerate parametric amplifiers for the frequency of 3100 Mc/s are described. The first is a single-resonator type with a bandwidth of 140 Mc/s, a gain of 19 dB and an excess noise temperature of 84°K. The second uses an additional resonant circuit to increase the bandwidth to over 300 Mc/s, but the excess noise temperature is also increased to 180° K owing to additional losses. The gain an... View full abstract»

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  • Investigation of an experimental narrow-band parametric amplifier

    Publication Year: 1963, Page(s):1304 - 1312
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (933 KB)

    A comparison of theory and experiment has been made for a negative-resistance three-frequency parametric amplifier incorporating a single varactor diode, operating in the h.f. band. The effect of diode series loss resistance has been simulated simply by connecting resistors in series with the diode. Good agreement between theory and experiment, in relation to gain, bandwidth and noise figure, has ... View full abstract»

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  • Analysis of parametric amplifiers incorporating varactor diodes

    Publication Year: 1963, Page(s):1313 - 1318
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (661 KB)

    A review is given of the capacitance and elastance approaches to the solution of the equations of circuits incorporating varactor diodes. An attempt has been made to set down a framework within which the approximations made in any particular analysis can be assessed. View full abstract»

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  • Video waveform correctors for use with coaxial cable

    Publication Year: 1963, Page(s):1319 - 1328
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1204 KB)

    Consideration is given to the problem of correcting for the effects of the attenuation/ and phase/frequency distortion of a coaxial-cable pair on the transmission of video waveforms. A method of designing correcting networks is described which uses an adjustable waveform corrector to provide the component values for a fixed network whose design tolerances are arranged to give the minimum waveform ... View full abstract»

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  • Video transmission system for use with coaxial cable

    Publication Year: 1963, Page(s):1329 - 1340
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1762 KB)

    A description is given of a video transmission system capable of transmitting 625-line monochrome television signals with very low distortion on coaxial-pair cable over distances of up to 25 miles, possibly extensible to more than 50 miles. Because power for intermediate repeaters is not fed over the coaxial-pair cables, the use of the system may be restricted under some circumstances. Special tec... View full abstract»

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  • Colour performance of the Secam colour television system

    Publication Year: 1963, Page(s):1341 - 1349
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1066 KB)

    The Secam colour television system has many parameters in common with the N.T.S.C. system, but the constraints imposed on the reproduction of both large-area colour and colour transitions by the practical limitations on amplitude and frequency excursions are different. After discussing the parameters of the Secam system which have been assumed throughout the paper, the relationship between the chr... View full abstract»

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  • Reading charge images off the storage surface of a camera tube

    Publication Year: 1963, Page(s):1350 - 1364
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1970 KB)

    The basic principles involved in reading the charge image which is stored on the insulating surface of the target in a camera tube are discussed. The relative importance of various sources of noise is investigated, choice of optimum frequency response depends on the detailed View full abstract»

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  • Angular-dependent modes in circular corrugated waveguide

    Publication Year: 1963, Page(s):1365 - 1373
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (941 KB)

    The paper gives an account of an investigation, both theoretical and experimental, of angular-dependent EH11 modes in a circular corrugated waveguide. The investigation was undertaken because oscillation in a mode of this type has been shown to be the cause of pulse-shortening or beam blow-up troubles occurring in electron linear accelerators under certain high-beam-current conditions. It is shown... View full abstract»

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  • Wideband technique applied to h.f. transmitter station equipment

    Publication Year: 1963, Page(s):1374 - 1384
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1485 KB)

    The application of wideband technique to h.f. transmitters is described. The particular band dealt with is 2¿27.5 Mc/s, but the findings are not restricted to this band. The general principles of wideband power amplification are discussed, followed by a description of, and results obtained with, a 1 kW wideband amplifier which uses a modified distributed-amplifier technique. This not only permits... View full abstract»

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  • Modern trends in high-frequency transmitter design

    Publication Year: 1963, Page(s):1385 - 1394
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1455 KB)

    The operating costs of a transmitting station can be substantially reduced if the equipment is automatically tuned and all services are directly controlled from a central point. This is due to the reduction of operating staff covering three shifts, and to the saving in `off the air¿ time made possible by rapid change of frequency. The paper describes a range of transmitters with output powers up ... View full abstract»

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  • Medium- and high-power automatically tuned linear amplifiers

    Publication Year: 1963, Page(s):1395 - 1401
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1113 KB)

    The essential features of any communications transmitter are reliability, ready means of frequency changing and linearity. Recently developed high-gain power valves require 1 kW, or less, driving power, which can be obtained from untuned wideband stages instead of the usual tuned drives. With only one tuned stage, it is easy to obtain a high degree of linearity, and automatic tuning by a frequency... View full abstract»

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  • Choice of multi-channel telegraph systems for use on H.F. radio links

    Publication Year: 1963, Page(s):1402 - 1410
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1163 KB)

    Telegraph systems for use over h.f. radio links are generally restricted to low modulation rates (100¿200 bauds) because of the effects of multi-path propagation. The usual practice is to employ frequency-division multiplexing to exploit the bandwidth of the radio channel. Different methods of modulation in the telegraph channels may be used¿frequency-shift, frequency-exchange and phase-shift. T... View full abstract»

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  • Developments in long-distance H.F. point-to-point communications

    Publication Year: 1963, Page(s):1411 - 1420
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1295 KB)

    The paper surveys technical developments in the point-to-point h.f. communication system of the British Post Office. In the first part, the development of radio-telegraph systems is discussed, and it is shown that these are tending to standardize on multichannel voice-frequency systems, using 2-tone for normally difficult routes (e.g. long routes subject to severe multipath effects) and narrow-ban... View full abstract»

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  • Highly stable frequency-shift-keying exciter

    Publication Year: 1963, Page(s):1421 - 1424
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (454 KB)

    The provision of a frequency-shift-keying system to meet present-day requirements presents the designer with three main difficulties; (a) the attainment of sufficient stability of the centre frequency, (b) the provision of a system suitable for keying at high digit rates, and (c) the prevention of out-of-band radiation. The paper indicates some problems inherent in systems commonly used in which t... View full abstract»

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  • Connecting large machines to power systems

    Publication Year: 1963, Page(s):1425 - 1433
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2226 KB)

    There are several methods of connecting machines to systems, each method having its advantages for particular types of machine and specific system conditions. Whereas, in the past, limitations were imposed only on the characteristics of the machine during the process of connection attempts are now made to assess the mutual effects between the system and the machine and to make allowance for these.... View full abstract»

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  • Multi-phase rectifier currents

    Publication Year: 1963, Page(s):1434 - 1440
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (617 KB)

    The paper deals with a modified theory of multi-phase rectifier currents. This theory is based on the fact that all system currents, i.e. the rectified secondary line and phase, as well as the primary, currents in the feeding transformer, depend algebraically on the harmonics of the current through a single rectifier element. It suffices, therefore, to know all components of this current in order ... View full abstract»

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  • Switching drive of induction motors

    Publication Year: 1963, Page(s):1441 - 1450
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1086 KB)

    Recent developments in semiconductors lead to new possibilities of motor control in general and of the induction motor in particular. The latter type of motor, although the most simple in construction and therefore the most widespread in use, does not lend itself easily to speed control and feedback arrangements. The paper shows that electronic control by means of semiconductors of the thyratron t... View full abstract»

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  • Phase-plane techniques for the solution of transient-stability problems

    Publication Year: 1963, Page(s):1451 - 1461
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1194 KB)

    The paper presents a graphical-numerical method for determining the transient stability limits of a two-machine system under the usual assumptions of constant input, no damping and constant voltage behind transient reactance. The method presented is based on the phase-plane criterion,1, 2 in contrast to the usual step-by-step and equal-area methods. For the transient stability limit of a two-machi... View full abstract»

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  • Discussion on ¿Asynchronous performance characteristics of turbo-generators¿

    Publication Year: 1963, Page(s):1461 - 1464
    IEEE is not the copyright holder of this material | PDF file iconPDF (639 KB)
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  • Magnetic field problem with axial symmetry and its solution in terms of Fourier-Bessel expansions

    Publication Year: 1963, Page(s):1465 - 1472
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (802 KB)

    A method for reaching implicit analytical solutions is explained, demonstrated and verified for certain problems of potential theory, characterized by having boundaries which are parts of co-ordinate surfaces. Different Fourier expansions for the potential are matched over an interface of the problem by the solution of linear simultaneous equations in their coefficients. Two problems are completed... View full abstract»

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  • Influence of parasitic brush currents on the performance of D.C. generators

    Publication Year: 1963, Page(s):1473 - 1479
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (944 KB)

    The parasitic brush currents which flow in the armature coils short-circuited by the brushes at the moment of commutation modify the characteristics of a d.c. generator, and the effects are particularly noticeable when the speed is varied. The modification of the characteristics can be explained by representing the parasitic brush currents by a current flowing in an additional armature circuit sub... View full abstract»

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  • Discussion on ¿Pole-change motors using phase-mixing techniques¿

    Publication Year: 1963, Page(s):1479 - 1482
    IEEE is not the copyright holder of this material | PDF file iconPDF (629 KB)
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  • Discussion on "Transductor-assisted tap changing on a 50 c/s locomotive with semiconductor rectifier"

    Publication Year: 1963, Page(s):1483 - 1489
    IEEE is not the copyright holder of this material | PDF file iconPDF (1187 KB)
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  • Discussion on ¿Design and construction of the cross-channel d.c. interconnector¿

    Publication Year: 1963, Page(s):1490 - 1493
    IEEE is not the copyright holder of this material | PDF file iconPDF (703 KB)
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  • An oscillating synchronous linear machine

    Publication Year: 1963, Page(s):1494 - 1495
    IEEE is not the copyright holder of this material | PDF file iconPDF (268 KB)
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Aims & Scope

The Proceedings of the Institution of Electrical Engineers was published by the IET between 1963 and 1979.

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