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Electronics Letters

Issue 12 • Date June 12 1969

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Displaying Results 1 - 17 of 17
  • Modulation disturbances in reflex klystrons caused by ions and slow electrons

    Publication Year: 1969, Page(s):255 - 256
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (328 KB)

    In some reflex klystrons, modulation disturbances are caused by ions and slow electrons in the electron beam. These disturbances occur only under specific operating conditions and are not always unambiguously reproducible. A method is outlined which already allows the tendency towards such disturbances to be measured. View full abstract»

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  • Effect of electronegative impurities on electronic conduction in compressed nitrogen

    Publication Year: 1969, Page(s):256 - 257
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (328 KB)

    Measurements of pulsed electron currents in compressed nitrogen show that appreciable attachment occurs to oxygen impurity of the order of 10 parts per million, and that the process depends on the partial pressure of oxygen, as well as on the ratio of electric field and gas density, E/p. View full abstract»

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  • Sensitivity of resist-coated silicon slices to argon-laser wavelengths

    Publication Year: 1969, Page(s):257 - 258
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (282 KB)

    First Page of the Article
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  • Surface-wave resonator coupling

    Publication Year: 1969, Page(s):258 - 259
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (234 KB)

    An inequality is derived which allows an estimate to be made of the separation required between surface-wave resonators to remove the likelihood of coupling. View full abstract»

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  • Telegraph time-division-multiplex equipment for satellite-communication systems

    Publication Year: 1969, Page(s):259 - 261
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (412 KB)

    An equipment has been designed and developed capable of combining 12 unrelated start-stop and synchronous telegraph channels of various speeds and formats using time-division-multiplex techniques. The general principles of terminal synchronisation between multiplexer and demultiplexer are described, together with a detailed description of the techniques used to transmit a synchronous 75 baud teleg... View full abstract»

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  • Regular pulsing of gallium-arsenide-diode laser

    Publication Year: 1969, Page(s):261 - 262
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (351 KB)

    A GaAs laser diode has been shown to emit a regular train of pulses as short as 150ps if it is pumped near the threshold by a pulsed direct current and a high-frequency component (100¿1000MHz). This behaviour agrees with results of a numerical analysis of simple rate equations. View full abstract»

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  • Fully iterative fast array for binary multiplication and addition

    Publication Year: 1969
    Cited by:  Papers (24)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (144 KB)

    A fast combinational circuit is described which can be used both as a multiplier and as an adder, either separately or together, giving a parallel binary output. The structure, which is completely iterative in terms of both cell logic and cell-interconnection pattern, is advantageous in large-scale integration. View full abstract»

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  • Quasistationary noise in resistors

    Publication Year: 1969, Page(s):263 - 265
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (425 KB)

    Carbon resistors, operated at very low currents, showed a quasistationary noise spectrum at very low frequencies. Over long periods the stationary noise power density followed S(¿) = K¿¿ß, with ß close to unity. Then sudden large fluctuations occurred ending in another stationary period, but K may have changed its value. This behaviour explains a difficulty in repeating l.f. noise measurement... View full abstract»

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  • Fourier analysis of a dielectric-loaded waveguide with a microstrip line

    Publication Year: 1969, Page(s):265 - 267
    Cited by:  Papers (14)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (422 KB)

    A Fourier analysis of a symmetrically placed microstrip line in a dielectric-loaded guide is performed. Computed results of the dispersion for the fundamental even Ez-odd Hz mode are presented. View full abstract»

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  • Resonances of an axially magnetised plasma column with hollow and perfectly conducting cores

    Publication Year: 1969, Page(s):267 - 269
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (399 KB)

    The resonances of an axially magnetised plasma column with hollow and perfectly conducting cores have been investigated using the quasistatic approach. It is found that the two resonances of a hollow plasma cylinder are shifted, but the single resonance of a plasma cylinder with a perfectly conducting core is split into three if an external magnetostatic field is impressed in the axial direction. View full abstract»

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  • Comment on An improved method of analysing nonlinear electrical networks [and reply]

    Publication Year: 1969, Page(s):269 - 271
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (462 KB)

    Conditions for convergence of the sequence Neill has used to find the periodic steady-state response of nonlinear networks are shown, by counterexample, to be more stringent than has been claimed. This result is explained and a sufficient condition for convergence is derived. It is recommended that a more sophisticated iterative scheme be used. View full abstract»

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  • Scattering due to irregularities on dielectric or optical fibres

    Publication Year: 1969, Page(s):271 - 272
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (299 KB)

    The effect on mode propagation of small (with respect to wave-length) irregularities or imperfections in a dielectric waveguide is analysed. Asymptotically, for large frequencies, the power which is scattered in the form of radiation (not guided) has an ¿2 behaviour, and that scattered into the modes obeys a 1/¿2 relationship. At the frequency of paramount interest for optical communication (cut... View full abstract»

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  • Unstiffening process for nonlinear electrical networks

    Publication Year: 1969, Page(s):272 - 274
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (329 KB)

    If the circuit equations corresponding to a 'stiff' nonlinear circuit are formulated as Volterra integral equations, it is often found that a rapid and accurate solution may be obtained by separating the stiffness components from the main equations, the contribution of these components being subsequently reintroduced as a perturbation of the solution of the relaxed system. View full abstract»

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  • Analogue-digital-convertor modification giving a four-times speed gain

    Publication Year: 1969, Page(s):274 - 275
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (216 KB)

    A modification to the counter type of analogue-digital convertor, in which the comparator is replaced with an amplifier, is suggested. The difference between the input voltage and the staircase is applied to three amplitude discriminators to detect ¿, ¿ and ¿ parts of a step. View full abstract»

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  • Tunnel-diode transient analysis

    Publication Year: 1969, Page(s):275 - 277
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (330 KB)

    A general analytical method has been given for switching-time calculations of a tunnel diode. The method is particularly useful for ready evaluation of switching speed under different circuit conditions, and the results show that the switching time depends on the average behaviour of the characteristics. View full abstract»

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  • Equivalence of the Rayleigh solution and the extended-boundary-condition solution for scattering problems

    Publication Year: 1969, Page(s):277 - 278
    Cited by:  Papers (9)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (263 KB)

    Methods based on the Rayleigh hypothesis (e.g. the point-matching method) for numerically solving wave-diffraction problems are shown to be equivalent to the exact extended-boundary-condition method. It is concluded that the Rayleigh hypothesis is exact, although, in general, it is necessary to interpret it in the generalised function sense. View full abstract»

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  • Erratum: Numerical analysis of forward and reverse bias potential distribution in a 2-dimensional p-n junction with applications to capacitance calculations

    Publication Year: 1969
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (135 KB)

    First Page of the Article
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Electronics Letters is internationally renowned for its rapid communication of new developments and emerging topics across the broad and interdisciplinary field of modern electronics and electrical engineering.

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Meet Our Editors

Editors-in-Chief

Professor Chris Toumazou
Director of the Biomedical Institute
Imperial College, London, UK

Professor Ian White
Head of Photonics Research
University of Cambridge, UK