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Electrical Engineers, Proceedings of the Institution of

Issue 2 • Date February 1963

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Displaying Results 1 - 25 of 35
  • Design of waveguide/coaxial transition for the band 2.5-4.1 Gc/s

    Publication Year: 1963, Page(s):253 - 255
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (335 KB)

    The work described has been concerned with developing a wide-band transition to match a component in W.G.10 waveguide to a coaxial component having a characteristic impedance of 50Ω, over the frequency band 2.5-4.1 Gc/s. The coaxial termination is of a size suitable for termination in N, C or any similar 50Ωcoaxial connection. In the design described, the waveguide and the coaxial ... View full abstract»

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  • Some properties of the waveguide Y-circulator

    Publication Year: 1963, Page(s):256 - 260
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (588 KB)

    A study has been carried out on waveguide Y-circulators, and experimental results are given for a series of ferrite geometries. It is shown that these results are in accordance with the predictions of the scattering-matrix theory, and, on this basis, a technique for increasing the bandwidth of the circulators is evolved. The performance of a series of broad-band circulators in the frequency range ... View full abstract»

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  • Circular-waveguide backward-wave structures

    Publication Year: 1963, Page(s):261 - 270
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1188 KB)

    The paper describes a graphical method for determining the cut-off conditions of those modes of a circular waveguide containing an axial dielectric rod which possess an azimuthal dependence of unity. Results are presented for the six modes of lowest order. It is shown that the cut-off conditions of a pair of modes such as the H1m and E1m can, under certain circumstances, coincide. This degeneracy ... View full abstract»

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  • A linear theory of 3-pole oscillators

    Publication Year: 1963, Page(s):271 - 274
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (374 KB)

    Modified `y¿ parameters are defined, which are applicable to 3-terminal networks. The use of these parameters simplifies the calculations, by preserving the algebraic symmetry throughout. The three values of loop gain of any active 3-pole network are evaluated, and a simple relationship between their real maxima is shown. It is established that, for a maximum real loop gain, the optimum passive 3... View full abstract»

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  • The analytical equivalence of TEM-mode directional couplers and transmission-line stepped-impedance filters

    Publication Year: 1963, Page(s):275 - 281
    Cited by:  Papers (22)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (741 KB)

    The coupling of two parallel transmission lines is utilized in directional couplers and filters which are simple to construct and have excellent electrical characteristics from high frequencies to microwave frequencies. The paper establishes the mathematical equivalence of such couplers to transmission-line stepped-impedance filters. It also places new demands on that theory in so far as new inser... View full abstract»

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  • Generation of filter functions from a given model

    Publication Year: 1963, Page(s):282 - 294
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1378 KB)

    The main object of the method is the synthesis itself. The method consists of Möbius transformation (which expands the concept of low-pass analogue) to provide explicit solutions of various low-pass, band-pass, high-pass and band-stop functions of multiple types. The method can be applied directly to given models, such as elliptic, maximally flat, Cheby¿shev or general low-pass analogue types. I... View full abstract»

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  • General design of ladder networks with arbitrarily distributed uniform losses between coils and capacitors

    Publication Year: 1963, Page(s):295 - 302
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (872 KB)

    Two methods of design of ladder networks with uniform losses arbitrarily distributed between inductances and capacitances are described. The fundamental principles of design, on a loss-free-network basis, and the multiplicity of solutions are analysed and discussed with examples. The results of the synthesis are given explicitly for application to low-pass analogue systems. View full abstract»

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  • The admittance of very long cylindrical antennae

    Publication Year: 1963, Page(s):303 - 309
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (634 KB)

    The admittances of long cylindrical antennae ranging in electrical half-length from ßh = 0.3 to ßh = 63.1 have been determined experimentally when the antennae are centre-driven by a 2-wire line. The measured values are in good agreement with the King-Middleton1 second-order theoiy for the shorter antennae and with Wu's theory2 for the longer ones. Particular care has been taken to avoid an unba... View full abstract»

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  • Guided complex waves. Part 1: Fields at an interface

    Publication Year: 1963, Page(s):310 - 324
    Cited by:  Papers (71)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2117 KB)

    The variety of waves which can be supported by a plane homogeneous interface includes surface waves of the forward and backward type, and several kinds of complex wave, the latter being characterized by wave numbers which are complex even though the media involved are not necessarily lossy. The present study views all these waves as contributions due to poles in several alternative integral repres... View full abstract»

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  • Guided complex waves. Part 2: Relation to radiation patterns

    Publication Year: 1963, Page(s):325 - 334
    Cited by:  Papers (25)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1177 KB)

    The presence of complex waves in the near field of a source-excited plane homogeneous interface is shown to play an important role in determining certain features of the radiation field. A Kirchhoff-Huygens integration over the near field reveals that, whenever these complex waves are strongly excited, they account for peaks in the radiation pattern. Under unidirectional excitation, each complex w... View full abstract»

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  • A design for resistors of calculable a.c./d.c. resistance ratio

    Publication Year: 1963, Page(s):335 - 347
    Cited by:  Papers (52)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1456 KB)

    The paper discusses the design of resistors of 100 and 1000¿ whose change in resistance with frequency is to be minimized. By using short lengths of fine wire folded so as to tend to cancel external fields, resistors have been made whose resistance change between zero frequency and lOOOOrad/s is thought to be less than 1 or 2 parts in 108. Figures are also given for the variation with frequency o... View full abstract»

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  • The overall noise figures of diode parametric amplifier systems

    Publication Year: 1963, Page(s):348 - 352
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (501 KB)

    The paper gives details of the calculation of the overall noise figure of a system of a parametric amplifier followed by a receiver, and shows how a minimum overall noise figure can be obtained when the parametric amplifier is allowed to have a small positive output impedance and a transformer is placed between the two receivers. The overall noise figure thereby obtained is then expressed in terms... View full abstract»

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  • Operation of the junction transistor as a fast low-level switch

    Publication Year: 1963, Page(s):353 - 368
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2014 KB)

    The paper considers the conditions necessary for a transistor to realize both good steady-state performance and high switching speed when operating as a low-level switch. It is found that, when functioning in this manner, the device is not adequately represented by the familiar simple model in terms of two independent charge stores, or by the equivalent definition of switching behaviour by charge ... View full abstract»

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  • A two-channel method for compressing the bandwidth of television signals

    Publication Year: 1963, Page(s):369 - 374
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1085 KB)

    The results of experiments with a coder for compressing the bandwidth of television signals are reported. A complete television system was used consisting of a transmitter, a receiver and two channels. At the transmitter a ?slope-feedback? coder reduced the bandwidth of the television signal before transmission; waveforms specifying scanning-spot brightness and scanning-spot position were separate... View full abstract»

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  • The design of wide-band transistor feedback amplifiers

    Publication Year: 1963, Page(s):375 - 389
    Cited by:  Papers (178)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1744 KB)

    A design technique is developed which apparently overcomes all the limitations of common-emitter transistor video amplifiers. This technique is based on the use of the impedance mismatch which occurs between stages having alternate series and shunt feedback. It is shown that the realizable gain-bandwidth product is in excess of 0.9¿T, the gain and bandwidth are insensitive to transistor parameter... View full abstract»

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  • The evaluation of the frequency spectrum of a waveform

    Publication Year: 1963, Page(s):390 - 392
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (276 KB)

    A method for the evaluation of the frequency spectrum of a non-recurrent waveform, which has the advantage of employing mainly addition in the numerical procedure, is presented. The method replaces the multiplication by sin ¿t and cos ¿t, which occurs in the Fourier integral, by multiplication by a square wave. View full abstract»

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  • North Lancashire Sub-Centre: Chairman's address. Wired television

    Publication Year: 1963, Page(s):393 - 394
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (289 KB)

    First Page of the Article
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  • Sheffield Sub-Centre: Chairman's address. Progress in telecommunications

    Publication Year: 1963, Page(s):394 - 395
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (211 KB)

    First Page of the Article
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  • The measurement of small reflection coefficients of components with coaxial connectors

    Publication Year: 1963
    Cited by:  Papers (6)
    IEEE is not the copyright holder of this material | PDF file iconPDF (135 KB)
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  • Electric traction. A review of progress

    Publication Year: 1963, Page(s):397 - 406
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1678 KB)

    The progress review of electric traction in June 1956 noted the growing development of the industrial-frequency single-phase a.c. system. At that time, its experimental stages were over and the system was established in Northern France. In March 1956, the British Transport Commission decided to adopt this system as standard for their 15-year railway modernization plan. The present survey refers br... View full abstract»

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  • Transients in distance protection

    Publication Year: 1963, Page(s):407 - 418
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1384 KB)

    The demand for high-speed operation in distance protection involves design consideration under three main headings, namely: the transient primary current and voltage at the relaying point; the modification of these signals due to secondary circuits; and the effect of the modified secondary signals on two input comparators currently or prospectively employed. These are considered in terms of simple... View full abstract»

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  • Effect of inductance on the measurement of winding temperature in electrical plant

    Publication Year: 1963, Page(s):419 - 427
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (990 KB)

    The normal method used to measure the temperature of the windings of transformers, reactors and other heavy electrical plant is by change of resistance. Resistances are measured before and after the heat run by simple d.c. measurements. Using the known temperature coefficients of resistance for copper, the temperature at shut-down is calculated. It is shown that inductance causes errors, leading t... View full abstract»

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  • High-voltage power-transformer insulation

    Publication Year: 1963, Page(s):428 - 440
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2442 KB)

    The increase in transmission system voltages in recent years to 500 kV, with even higher prospective values, makes the internal insulation a large proportion of the transformer cost and therefore economically more important. The associated increase in MVA rating, and hence in size and weight, has reached beyond transport limits and demands better insulation of smaller volume. These factors can bot... View full abstract»

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  • North-Eastern Centre: Chairman's address. The growth of power transformers

    Publication Year: 1963, Page(s):440 - 442
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (492 KB)

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  • East Midland Centre: Chairman's address. Electricity generation: material economy

    Publication Year: 1963, Page(s):442 - 444
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    First Page of the Article
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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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