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Proceedings of the IEE - Part B: Radio and Electronic Engineering

Popular Articles (May 2015)

Includes the top 50 most frequently downloaded documents for this publication according to the most recent monthly usage statistics.
  • 1. A system for the automatic recognition of patterns

    Publication Year: 1959 , Page(s): 210 - 221
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1540 KB)  

    The paper describes a new method for the automatic recognition of patterns. The method may be applied to any form of spatial pattern, but in the present instance, patterns consisting of line figures are considered. The pattern is presented to a flying-spot scanner connected to a digital computer. The shape of the pattern is analysed and a statement is prepared describing the basic features of the ... View full abstract»

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  • 2. Coupled transmission lines as symmetrical directional couplers

    Publication Year: 1955 , Page(s): 383 - 392
    Cited by:  Papers (14)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1510 KB)  

    If two similar unbalanced transmission lines are coupled together by sharing a common outer conductor for part of their length, so as to form a 3-conductor line, they constitute a symmetrical directional coupler. The output ratio of this varies sinusoidally with frequency, being greatest for lengths equal to an odd number of quarter-wavelengths; the characteristic impedance is independent of frequ... View full abstract»

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  • 3. The properties of manganese-zinc ferrites and the physical processes governing them

    Publication Year: 1957 , Page(s): 165 - 173
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1269 KB)  

    The paper outlines some of the electrical and physical properties of manganese-zinc ferrites and the mechanisms by which they occur. Initial permeability is shown to depend on stoichiometry, granular structure and composition, while the temperature coefficient of permeability is shown to be controllable by the addition of small amounts of trivalent metallic impurities. The influence of composition... View full abstract»

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  • 4. Some applications of ferrites to microwave directional couplers, switches, and cavity filters

    Publication Year: 1957 , Page(s): 388 - 394
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (963 KB)  

    The paper reviews some of the research and development projects which led to the designs for a ferrite directional coupler, a ferrite microwave switch and ferrite-loaded cavity filters. Directional coupling is accomplished at microwave frequencies by extending a ferrite cylinder through the common wall of two rectangular waveguides joined at the broad face. Experimental data for coupling and direc... View full abstract»

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  • 5. A transistor high-gain chopper-type d.c. amplifier

    Publication Year: 1958 , Page(s): 258 - 272
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1230 KB)  

    In transistor d.c. amplifiers, the sensitivity is mainly limited by drift of operating point caused by changes in ambient temperature. A modulated amplifier is necessary to obtain a high sensitivity without recourse to methods of drift compensation requiring the adjustment of several balancing controls. The paper describes a modulated system consisting of a transistor input chopper, a high-gain tr... View full abstract»

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  • 6. Some transistor input stages for high-gain d.c. amplifiers

    Publication Year: 1958 , Page(s): 249 - 257
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1069 KB)  

    The sensitivity of a d.c. amplifier using transistors is mainly limited by the variation with temperature of the inter-electrode potentials and currents of the transistors, the variation between any two temperatures being termed the thermal drift. A typical low-frequency germanium transistor connected as a directly-coupled common-emitter amplifier may introduce current and voltage drifts, referred... View full abstract»

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  • 7. Transistor circuits and applications

    Publication Year: 1957 , Page(s): 565 - 584
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (2202 KB)  

    Junction-transistor circuits are reviewed, and new concepts and trends in design are discussed. Improvements in transistor ratings are described, but special transistor types such as tetrodes, p-n-p-n and unipolar devices are not considered. Basic applications surveyed include low-level and power amplifiers, square-wave and sinusoidal oscillators, power convertors and regulators, waveform-shaping ... View full abstract»

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  • 8. Saturation magnetization of some ferrimagnetic oxides with hexagonal crystal structures

    Publication Year: 1957 , Page(s): 255 - 260
    Cited by:  Papers (9)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (773 KB)  

    Anderson's treatment of super-exchange yields a qualitative rule for the dependence of interaction on angle Me¿O¿Me. Using this rule, and assuming a longer distance to lead to a weaker interaction, low-temperature saturation magnetizations for ferrimagnetic oxides with known crystal structures can often be predicted. The results obtained for some of the materials described in Ref. 1, i.e. Ba2MeI... View full abstract»

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  • 9. Microwave amplification by means of intrinsic negative resistances

    Publication Year: 1958 , Page(s): 665 - 672
    Cited by:  Papers (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1203 KB)  

    Intrinsic-negative-resistance amplifiers with matched input, known for some time at low frequencies, are easily transposed at microwave frequencies. With amplifiers based on the parallel coupling of load and negative conductance, a unidirectional line can ensure or improve separation between input and load. In another circuit a circulator is used. The two-way amplifier, consisting of a T-network, ... View full abstract»

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  • 10. Magnetocrystalline anisotropy in cobalt-substituted magnetite single crystals

    Publication Year: 1957 , Page(s): 238 - 244
    Cited by:  Papers (7)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (943 KB)  

    The growth of single crystals corresponding to x=0 (high-purity magnetite), x = 0.01 and x = 0.04 in the composition series CoxFe3-xO4 is described. First- and second-order anisotropy constants of these crystals are determined by the torque method over the temperature range 120¿450°K. The substitution of small amounts of cobalt for iron is found to add a positive contribution to K1 and a negativ... View full abstract»

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  • 11. Standard waveguides and couplings for microwave equipment

    Publication Year: 1955 , Page(s): 493 - 499
    Cited by:  Papers (5)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1368 KB)  

    An account is given of the development and standardization of waveguides, couplings and adaptors for microwave equipment. Whilst these items were primarily intended for use in Service electronic equipment, they have proved to be of considerable use in commercial applications. The appropriate sizes of waveguide to cover the whole microwave spectrum are discussed, and reasons are given for the stand... View full abstract»

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  • 12. Broad-band slot-coupled microstrip directional couplers

    Publication Year: 1958 , Page(s): 147 - 154
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (954 KB)  

    The paper describes a new design technique for directional couplers in a printed strip-above-ground microwave transmission system (microstrip). The two transmission lines are mounted back to back and coupled through slots in the common ground plane. The coupling factors of isolated slots of different shape are calculated and are found to be in good agreement with measured results. A specific desig... View full abstract»

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  • 13. A new form of hybrid junction for microwave frequencies

    Publication Year: 1957 , Page(s): 261 - 264
    Cited by:  Papers (6)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (523 KB)  

    The principle of the branch-waveguide directional coupler has been applied to the design of a new form of hybrid junction for microwave frequencies. An equal division of power between the main and subsidiary waveguides is achieved by arranging the voltage coupling coefficients of the branch waveguides in accordance with the coefficients in a binomial expansion. Details of design and performance of... View full abstract»

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  • 14. Carrier-leak in rectifier modulators of the shunt type

    Publication Year: 1955 , Page(s): 475 - 487
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1796 KB)  

    An experimental study has been undertaken in an endeavour to achieve an understanding of the mechanism of carrier-leak in shunt modulators, to elucidate some of the factors affecting the attainment of low leak levels (in the range 40 to 80 dB below the carrier voltage), and to investigate the possibilities of d.c. balancing of the rectifier bridge. With a square-wave carrier voltage in a non-react... View full abstract»

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  • 15. Non-reciprocal network theory applied to ferrite microwave devices

    Publication Year: 1957 , Page(s): 316 - 319
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (333 KB)  

    First Page of the Article
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  • 16. Some theoretical and practical considerations of the Johnsen-Rahbek effect

    Publication Year: 1956 , Page(s): 125 - 131
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1028 KB)  

    A theory of electrostatic attraction, influenced by field emission, is proposed to explain the Johnsen-Rahbek effect between the flat and polished surfaces of a metal and a semi-conductor in contact. The application and advantages of the effect as a clutch are described, and the results of a large number of life tests are summarized. It is concluded that the unreliability of such a clutch, due mai... View full abstract»

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  • 17. The theoretical design of direction-finding systems for high frequencies

    Publication Year: 1956 , Page(s): 113 - 119
    Cited by:  Papers (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (980 KB)  

    The problem of finding the bearing of a distant h.f. transmitter in conditions of wave interference is examined for the simplified case of non-interacting aerials on a plane earth and with no pick-up of horizontally polarized radiation. Two methods of approach are considered¿solution of the field equations for a number of incident plane waves from a knowledge of the field at the aerials, and the ... View full abstract»

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  • 18. The design of a logic for the recognition of printed characters by simulation

    Publication Year: 1956 , Page(s): 456 - 462
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1054 KB)  

    A logic for the recognition of printed characters employing a proportional-parts method has been tested extensively by simulation; the method relates the identity of a character to the relative size and position of character elements detected by optical scanning along closely spaced vertical lines, the video information from each scan being coded to designate the number, size and position of inked... View full abstract»

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  • 19. A new ceramic waveguide window for use on X-band valves

    Publication Year: 1958 , Page(s): 609 - 612
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (581 KB)  

    During the development of all-ceramic klystron valves, the conventional resonant window, incorporating a thin ceramic disc sealed to a metal diaphragm, was found to have several disadvantages. A new window was therefore developed which simplifies the input and output structures of microwave valves. The new window consists basically of a length of circular waveguide filled with alumina-type ceramic... View full abstract»

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  • 20. The electroforming of components and instruments for millimetre wavelengths

    Publication Year: 1955 , Page(s): 223 - 230
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1366 KB)  

    An account is given of the use of electroforming techniques as an accurate and economical method for the manufacture of waveguide components and instruments. Particular reference is made to those for millimetre wavelengths, but some of the techniques can, with advantage, be applied to those for the centimetre wavebands. The development of improved methods and processes, including periodic-reverse-... View full abstract»

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  • 21. A survey of the theory and applications of ferrites at microwave frequencies

    Publication Year: 1957 , Page(s): 267 - 282
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (2361 KB)  

    The paper opens with a brief review of gyromagnetic media in general, followed by a more detailed description of the microwave behaviour of a ferromagnetic medium, of which ferrites form a suitable class of material. The general physical properties of ferrites are outlined briefly, together with a description of several of the mechanisms to account for the dispersion which occurs in their r.f. per... View full abstract»

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  • 22. A scatter-signal analyser

    Publication Year: 1958
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (599 KB)  

    The paper describes a scatter signal analyser which enables level time-structure measurements to be made on scatter propagation signals. The analyser consists of several different units, the most important which is a level comparator of the sampling type whose speed response is sufficient to deal with the highest fading rates anticipated. The various units may be interconnected in different ways, ... View full abstract»

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  • 23. A transducer for digital data-transmission systems

    Publication Year: 1956 , Page(s): 42 - 51
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1532 KB)  

    Accurate information such as may be required for weapon control may best be transmitted over long-distance telegraph or voice communication circuits by using some form of digital representation or pulse code modulation. The paper describes a method by which the position of a scale attached to a datum shaft may be ¿read¿ photo-electrically as a binary number in much the same way as the scale of a... View full abstract»

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  • 24. Theory of three-level paramagnetic masers. Part 4: Noise figure

    Publication Year: 1958 , Page(s): 705 - 709
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (802 KB)  

    The input noise temperature of a maser amplifier is equal to |<Tm>| + X(|<Tm>| + <Te>), where <Tm> is the mean effective temperature of the paramagnetic ions, <Te> is the mean temperature of the parts of the amplifier in thermal equilibrium (excluding the signal source) and X is the noise parameter of the amplifier. The noise parameter of an amplifier is defined as th... View full abstract»

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  • 25. An experimental study of high-permeability nickel-iron alloys

    Publication Year: 1957 , Page(s): 343 - 354
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1743 KB)  

    Because the properties of commercial alloys are inconsistent, designers of electrical equipment normally assume properties greatly inferior to those usually quoted. Further, very thin strips or sheets have losses greater than those predicted by simple theory. Factors which might influence either the ultimate performance or the consistency of the metals have therefore been studied, with particular ... View full abstract»

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  • 26. On the measurement of attenuation in ultrasonic delay lines

    Publication Year: 1956 , Page(s): 773 - 780
    Cited by:  Papers (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (998 KB)  

    A theoretical and experimental study has been made of the effects of coupling films on the propagation of compressional waves from a transducer to a solid medium. In practice it has been found that `wringing¿ the transducer to the specimen with oil as a coupling medium produces a film of non-uniform thickness. Although the variations in thickness are of the order of a wavelength of light, these v... View full abstract»

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  • 27. Power-system engineering problems with reference to the use of digital computers

    Publication Year: 1956 , Page(s): 26 - 34
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1472 KB)  

    The paper is addressed primarily to those power-system engineers who are interested in the possible applications to their work of high-speed digital computers. Flow diagrams and such technical details are not given in the text, since the methods of solution for the three problems specifically mentioned are already standard mathematical routines arising in many other fields of engineering. For the ... View full abstract»

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  • 28. The launching of a plane surface wave

    Publication Year: 1955 , Page(s): 237 - 246
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1230 KB)  

    The subject of the paper is a theoretical and experimental investigation of surface-wave propagation over a plane conductor with dielectric coating. Special reference is made to the problem of launching such a wave. Two experimental surfaces have been constructed, and a series of measurements has confirmed the properties of the waves as reported in the literature. A number of trials of various pos... View full abstract»

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  • 29. Optical techniques at microwave frequencies

    Publication Year: 1959 , Page(s): 141 - 157
    Cited by:  Papers (10)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (2410 KB)  

    The paper reviews the application of optical principles and techniques at microwave frequencies. A brief discussion of radiation and diffraction in the far and near fields is first given. This is followed by an account of the various types of artificial dielectric. Methods for reducing and enhancing surface reflectivity are examined, and several instruments and components, which are especially use... View full abstract»

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  • 30. The control and instrumentation of a nuclear reactor

    Publication Year: 1956 , Page(s): 564 - 576
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (2052 KB)  

    The control and instrumentation of nuclear reactors is a rapidly developing subject which is becoming of ever-increasing importance to a growing body of instrument engineers. Many of the problems of instrumental design are common with other industrial plants and follow conventional lines. Some, however, are more specialized, and arise principally from the radioactive nature of the reactor and its ... View full abstract»

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  • 31. Theory of reflections from the rodded-type artificial dielectric

    Publication Year: 1959 , Page(s): 107 - 114
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1080 KB)  

    It is demonstrated that a composite material of a solid dielectric with embedded conductors can give a wave impedance equivalent to that of free space, and thus eliminate interface reflections. A particular material, the rodded dielectric, is analysed, and design procedures are given which are exemplified by numerical results. An experimental verification of the design theory when the electric-fie... View full abstract»

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  • 32. A review of tropospheric scatter propagation theory and its application to experiment

    Publication Year: 1958 , Page(s): 165 - 176
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (2146 KB)  

    A comprehensive review is made of published work on the theory of beyond-horizon propagation of radio waves by means of oblique scattering from randomly-distributed irregularities of refractive index in the troposphere. A scattering theory is formulated which attempts to take as accurate account as possible of all effects likely to be important in practice, consisting of some new results combined ... View full abstract»

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  • 33. Propagation in curved and twisted waveguides of rectangular cross-section

    Publication Year: 1955 , Page(s): 75 - 80
    Cited by:  Papers (9)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (624 KB)  

    The propagation in curved and twisted rectangular waveguides is investigated by putting the wave equation in a form in which the co-ordinates in a waveguide cross-section are also the independent variables in the differential equation. The wavelength is found for the E-curved and H-curved guides, and for twisted guides. In the latter case there is a degeneracy when the guide sides become equal. Cu... View full abstract»

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  • 34. The application of printed-circuit techniques to the design of microwave components

    Publication Year: 1958 , Page(s): 155 - 172
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (2666 KB)  

    A brief résumé is given of the basic theory of strip transmission lines including unwanted effects such as spurious mode transmission and radiation. A variety of materials and different printed-circuit techniques have been tried and the relative merits of each are discussed. A technique of measurement is described and details are given of two pieces of specially developed measuring equipment in ... View full abstract»

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  • 35. Re-entrant transmission-line filter using printed conductors

    Publication Year: 1958 , Page(s): 173 - 179
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (943 KB)  

    The re-entrant line filter section first described by Alford in 1939 is employed. The theory of these filters is expanded, and a novel procedure is described for the design of microwave low-pass filters possessing a relatively high stop-band insertion loss over bandwidths of 3 : 1 or more. The filter may conveniently be realized in strip-transmission-line form utilizing printed-circuit techniques.... View full abstract»

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  • 36. Nickel-chromium-aluminium-copper resistance wire

    Publication Year: 1956 , Page(s): 439 - 447
    Cited by:  Papers (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1436 KB)  

    A review is given of the principal materials used for the construction of resistance standards. The difficulty of producing manganin and constantan commercially with the requisite small value of temperature coefficient at room temperature makes attractive the newer alloys, whose temperature coefficients can be controlled by simple heat treatment. One of these alloys, having the additional advantag... View full abstract»

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  • 37. An investigation of the properties of radial cylindrical surface waves launched over flat reactive surfaces

    Publication Year: 1956 , Page(s): 307 - 318
    Cited by:  Papers (9)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1161 KB)  

    The problem of launching and supporting the radial form of surface wave over a flat surface is examined both theoretically and experimentally. The arrangement discussed consists of a vertical dipole aerial erected at different heights above the centre of a large horizontal metal plate inductively loaded at the surface, either by coating it with a thin layer of dielectric or by corrugating it with ... View full abstract»

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  • 38. An experimental design study of some S- and X-band helical aerial systems

    Publication Year: 1956 , Page(s): 764 - 771
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1153 KB)  

    The general characteristics of helical aerials are summarized and the results of polar-diagram measurements in the S- and X-bands are given for single and multiple helices. Reference is made to methods of widening both the beam width and the bandwidth obtained with a helical aerial by means such as end loading and tapering. The possibility of adapting helical aerials to give wide-band linearly pol... View full abstract»

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  • 39. The electrical characteristics of a nickel-chromium-aluminium-copper resistance wire

    Publication Year: 1957 , Page(s): 515 - 518
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (499 KB)  

    The changes in electrical resistance and temperature coefficient of resistance during the heat treatment of a nickel-chromium-aluminium-copper alloy, known commercially as Evanohm, are presented. From the nature of the resistance/temperature curve and X-ray diffraction data, it is proposed that the electrical changes be attributed to short-range order. Data are presented to show that both the mean... View full abstract»

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  • 40. The combination of inertial navigation and radio aids

    Publication Year: 1958 , Page(s): 266 - 276
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1574 KB)  

    By measuring forces and moments that constrain a body of known inertial characteristics to move with a vehicle it is possible to determine acceleration in a set of specified axes and hence change in velocity and position. The principles of this method of navigation, known as inertial navigation, are outlined, and it is shown that the many possibilities of a practical realization can all be express... View full abstract»

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  • 41. Ship stabilization: automatic controls, computed and in practice

    Publication Year: 1957 , Page(s): 20 - 26
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1093 KB)  

    The paper relates in brief the development of the control apparatus by the author for the Denny-Brown type of ship stabilizer from the initial ON-OFF control, to the present proportional control using roll and roll-velocity functions. The use of roll acceleration and a feedback control are also discussed. Predictions of the performance of a stabilizer by step-by-step and analogue methods are given... View full abstract»

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  • 42. Design of microwave filters with quarter-wave couplings

    Publication Year: 1956 , Page(s): 173 - 177
    Cited by:  Papers (11)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (618 KB)  

    Resonator diaphragms are constructed from triplets of inductive posts, whose spacings and radii are chosen to prevent the generation of the first five non-propagating modes. This is sufficient to ensure negligible coupling at quarter-wave separation. Measurements on filters at 4000 Mc/s indicate a satisfactory performance. View full abstract»

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  • 43. The application of radio altimeters to aircraft approach and landing

    Publication Year: 1958 , Page(s): 358 - 364
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1132 KB)  

    A brief history of the development and application of pluse and frequency-modulated radio altimeters is given, and a few of the basic principles are mentioned. The paper then discribes in some detail the analysis of the performance of an equipment at very low altitudes and shows how this performance can be improved to make it applicable to the control of landing aircraft. Recorder plots of height ... View full abstract»

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  • 44. Broadband transistor feedback amplifiers

    Publication Year: 1956
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1350 KB)  

    The possibilities of negative-feedback amplifiers involving three cascaded common-emitter junction-transistor stages are investigated. Simple approximate expressions are given for the power gain, input impedance and output impedance of series, shunt and compound feedback amplifiers, for the case of large applied negative feedback. It is shown that with large negative feedback, dynamic stability co... View full abstract»

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  • 45. Theory of the measurement of the elements of the permeability tensor of a ferrite by means of a resonant cavity

    Publication Year: 1957 , Page(s): 307 - 315
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1150 KB)  

    The `intrinsic¿ and `external¿ permeabilities of a ferrite are defined, and the relationship between the elements of these tensors is discussed. The derivation from Maxwell's equations is given of the magnetic field in a ferrite sphere when this is placed in a uniform microwave field perpendicular to the polarizing field. This result is used in the calculation of the frequency shift which takes ... View full abstract»

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  • 46. The properties of artificial dielectrics at centimetre wavelengths

    Publication Year: 1955 , Page(s): 11 - 16
    Cited by:  Papers (8)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (830 KB)  

    The properties of an artificial dielectric at centimetre wavelengths are compared with those of a solid material, and the possible definitions of the refractive index and the wave impedance are examined. It is concluded that the most appropriate definition of the latter is in terms of the reflection coefficient at an interface between the artificial dielectric and free space. The reactive fields w... View full abstract»

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  • 47. An introduction to some technical factors affecting point-to-point radiocommunication systems

    Publication Year: 1955 , Page(s): 733 - 743
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1791 KB)  

    Technical factors affecting point-to-point radiocommunication systems are briefly reviewed, as an introduction to the very extensive literature of the subject. View full abstract»

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  • 48. The Manchester University Mark II digital-computing machine

    Publication Year: 1956 , Page(s): 247 - 268
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (2856 KB)  

    The paper describes the Mark II digital-computing machine now operating in the Computing Machine Laboratory of Manchester University. It has a 100 kc/s parallel cathode-ray-tube store and a 1 Mc/s serial control, B-register and accumulator. Thus, internally, the speed of the machine is inherently greater than that of its predecessor by a factor of ten. Orders which concern the B-register or contro... View full abstract»

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  • 49. A variation principle for small-amplitude disturbances of electron beams

    Publication Year: 1958 , Page(s): 632 - 633
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (311 KB)  

    First Page of the Article
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  • 50. Design of a 100 mW helix travelling-wave amplifier at 50 Gc/s

    Publication Year: 1958 , Page(s): 405 - 408
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