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

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  • Doppler navigation

    Publication Year: 1958, Page(s):235 - 247
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1889 KB)

    This paper describes a self-contained radio navigation aid for aircraft which works by virtue of the Doppler principle. Ground speed and drift angle are determined by measuring the Doppler shifts that occur when signals transmitted from a moving aircraft are reflected back from the ground along two or more beams. Ground speed with an error of less than 0.2% and drift angle with an error of less th... View full abstract»

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  • Discussion on "Some applications of the electrolytic tank to engineering design problems"

    Publication Year: 1955, Page(s):447 - 452
    IEEE is not the copyright holder of this material | PDF file iconPDF (971 KB)
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  • A new form of hybrid junction for microwave frequencies

    Publication Year: 1957, Page(s):261 - 264
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | 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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  • An investigation into some fundamental properties of strip transmission lines with the aid of an electrolytic tank

    Publication Year: 1956, Page(s):319 - 333
    Cited by:  Papers (15)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2090 KB)

    The paper describes a method of deriving numerical values for quantities such as characteristic impedance, attenuation and wavelength with the aid of an electrolytic tank. Numerical results are given for two principal forms of strip transmission line for a range of dimensions for which rigorous solutions by direct analysis are not readily available. This range is nevertheless of considerable pract... View full abstract»

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  • Notes on microwave ferromagnetics research

    Publication Year: 1957, Page(s):371 - 378
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1244 KB)

    The paper is a report on several of the research projects undertaken in the Radio Research Department of the Bell Laboratories. Ceramic Ferroxdure has been studied at 9, 24 and 48kMc/s, and it has been established that the strong absorption at 48kMc/s is due to resonance caused by a crystalline-anisotropy field of 18000 oersteds. This material has been used as a filter, as the active element in mi... View full abstract»

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  • The radiating properties of end-fire aerials

    Publication Year: 1957, Page(s):27 - 34
    Cited by:  Papers (14)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1140 KB)

    An end-fire aerial, such as a Yagi or a dielectric-rod aerial, can be regarded as a structure which supports the dipole type of surface wave. Radiation occurs at the end of the aerial, the radiation pattern being determined by the transverse field distribution of the surface wave. It is shown that this leads to a simple relation between the beam width of the pattern and the ratio of the wavelength... View full abstract»

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  • An approach to the design of constant-resistance amplitude equalizer networks

    Publication Year: 1958, Page(s):185 - 189
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (565 KB)

    It is often desirable to correct or to adjust the amplitude/frequency response of a network to meet certain stated requirements. Although it is usually not difficult to calculate the insertion loss of a correcting network, the inverse is rather more difficult. The paper suggests a method of designing constant-resistance amplitude equalizers to give a desired slope over the working range concerned.... View full abstract»

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  • The design, performance and use of fission counters

    Publication Year: 1958, Page(s):349 - 356
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1371 KB)

    The basic design criteria for electron-collection fission counters are discussed; data are presented concerning the effect of thickness of fissile material on sensitivity and the effect of electrode spacing and gas pressure on pulse height. High detection efficiencies are obtained with electrode coatings of 1 mg/cm2, and thicknesses up to 2mg/cm2 may be used when high sensitivities are required. W... View full abstract»

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

    Publication Year: 1957, Page(s):165 - 173
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | 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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  • An experimental design study of some S- and X-band helical aerial systems

    Publication Year: 1956, Page(s):764 - 771
    IEEE is not the copyright holder of this material | 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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  • The Decca Navigator system for ship and aircraft use

    Publication Year: 1958, Page(s):225 - 234
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1985 KB)

    The paper discusses the present use of the Decca Navigator radio position-fixing system as a marine and aircraft navigational aid. The permanent navigational service currently comprises 12 chains and some 4000 ship and aircraft installations; in addition, mobile chains are used for surveying and exploration. The absence of modulation permits close spacing of the chain frequencies. The receivers co... View full abstract»

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

    Publication Year: 1958, Page(s):155 - 172
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | 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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  • Frequency pushing in crossed-field oscillators. A comparison between the c.w. magnetron and the magnetron-type backward-wave oscillator

    Publication Year: 1958, Page(s):525 - 528
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (802 KB)

    Experimental results showing the effect of anode current on the frequency of crossed-field oscillators are presented. The results for M-type backward-wave oscillators are shown to be qualitatively explained simply by taking into account the potential deresion due to the presence of the electron beam. View full abstract»

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  • Ferrimagnetic resonance in a magnesiumߝmanganese ferrite

    Publication Year: 1957, Page(s):206 - 208
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (410 KB)

    The effect upon the ferrimagnetic resonance curve of different ferrite firing temperatures in the range 1250ߝ1450°C has been studied. The ferrite used had the approximate composition 0.9 MgO, 0.1 MnO, 0.8 Fe2O3, and measurements were made on polycrystalline spheres at wavelengths close to 0.866 and 1.244cm. Two parameters are used to describe the resonance curve: �... View full abstract»

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  • The digital computer as an aid to the electrical design engineer

    Publication Year: 1956, Page(s):47 - 53
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (782 KB)

    The value of the digital computer as an aid to the electrical design engineer is discussed in the light of the authors' extensive use of the Manchester University Computer during the past three years. Three examples of this kind of application are described; the examples relate to problems concerning impulse-voltage distribution on transformer windings, supply-frequency ripple on transductor perfo... View full abstract»

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  • An experimental annular reflex klystron

    Publication Year: 1958, Page(s):969 - 977
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1027 KB)

    The paper discusses the advantages and disadvantages of the strip and annular forms of klystron. There would appear to be considerable advantages in their application to the high-power and short-wavelength fields. An investigation into the behaviour of these geometries is described, in which an annular reflex klystron operating in the 3 cm band was taken for study. It was expected that problems wo... View full abstract»

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  • Frequency synchronization of an X-band reflex klystron

    Publication Year: 1958, Page(s):944 - 951
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (857 KB)

    The paper gives results obtained in synchronizing an X-band reflex klystron oscillator to a source of power at a similar frequency. The power is fed through an isolator to the oscillator so that synchronization is attempted in one direction only. The results show the variation of control range and power output with various parameters of the system. A number of applications of the phenomenon are di... View full abstract»

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  • Transistor circuits and applications

    Publication Year: 1957, Page(s):565 - 584
    IEEE is not the copyright holder of this material | 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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  • The launching of radial cylindrical surface waves by a circumferential slot

    Publication Year: 1959, Page(s):123 - 128
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (633 KB)

    The efficiency with which radial cylindrical surface waves may be launched by a circumferential slot is investigated theoretically and experimentally. The radius of the slot has been found to affect the launching efficiency very little. An optimum efficiency of about 68% is obtainable with a slot of 2cm radius above a 58-ohm reactive surface. View full abstract»

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  • The properties of artificial dielectrics at centimetre wavelengths

    Publication Year: 1955, Page(s):11 - 16
    Cited by:  Papers (13)
    IEEE is not the copyright holder of this material | 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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  • Phase variations of 16 kc/s transmissions from Rugby as received in New Zealand

    Publication Year: 1958, Page(s):301 - 304
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (552 KB)

    The results of approximately one year's measurement of the diurnal phase variation, in New Zealand, of the highly stable 16 kc/s transmission from GBR are given and discussed. If it can be considered that the signal is received by the short great-circle path, the observed phase variations appear to be in accordance with propagation via the TM01-mode which exists between parallel, plane metallic sh... View full abstract»

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  • The theory and design of coaxial resistor mounts for the frequency band 0-4000mc/s

    Publication Year: 1955, Page(s):730 - 731
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (233 KB)

    First Page of the Article
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  • Theory of imperfect waveguides: the effect of wall impedance

    Publication Year: 1955, Page(s):698 - 708
    Cited by:  Papers (21)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1198 KB)

    Wave propagation in waveguides whose walls exhibit an arbitrary but small surface impedance is studied. It is shown that, although in the case of circular waveguides all E-and H-modes are stable, in the case of rectangular waveguides all E-modes and higher-order H-modes are unstable, leaving only H modes that can propagate without change of form. General formulae are derived from which the propaga... View full abstract»

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  • A vector method for amplitude-modulated signals

    Publication Year: 1956, Page(s):410 - 417
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1115 KB)

    The paper describes a vector notation for amplitude-modulated alternating quantities. This notation enables vector expressions to be derived for the impedances, admittances and transfer ratios of electrical circuits, and these expressions in turn operate directly on the vector for the amplitude-modulated voltages and currents to give the vectors for the dependent variables in the circuit. The resu... View full abstract»

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  • High-speed electronic-analogue computing techniques

    Publication Year: 1955, Page(s):609 - 620
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1795 KB)

    The paper describes circuits and techniques of measurement developed for use in an electronic-analogue differential analyser running at high repetition rates. The object has been to explore the upper limits to the speed conveniently attainable in various basic operations. After a general description of the problem and the computer which was ultimately developed, these basic operations are treated ... View full abstract»

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

    Publication Year: 1957, Page(s):388 - 394
    IEEE is not the copyright holder of this material | 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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  • A theoretical and experimental investigation of anisotropic-dielectric-loaded linear electron accelerators

    Publication Year: 1957, Page(s):273 - 290
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2456 KB)

    The general properties of linear accelerator waveguides loaded with spaced discs of ceramic dielectric are investigated theoretically and these waveguides are shown to have a higher shunt impedance than all-metal waveguides. Theoretical and experimental methods of waveguide design follow, a combination of which is used to design an experimental linear electron accelerator. Early experience with th... View full abstract»

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  • Dispersion curves for a helix in a glass tube

    Publication Year: 1958, Page(s):747 - 755
    Cited by:  Papers (17)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (945 KB)

    The dispersion equations giving the variation of velocity of propagation with frequency for a sheath helix (a thin cylinder conducting only in a helical direction) inside a dielectric tube are obtained, and, from these, dispersion curves are plotted for various ranges of the parameters (tube diameter, permittivity, wall thickness, etc.). Simple approximate formulae are derived and are used to disc... View full abstract»

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  • 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)
    IEEE is not the copyright holder of this material | 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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  • A digital computer based on magnetic circuits

    Publication Year: 1957, Page(s):485 - 490
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (828 KB)

    The paper discusses in some detail that part of a digital computer, Decca Cl, which has been built with `square¿ hysteresis-loop ferrite cores. This part of the computer comprises the arithmetic and controlling circuits and the storage registers. The development of three basic logical circuits is indicated, and there is some discussion of the behaviour of these circuits. Designs of the basic circ... View full abstract»

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  • Crystalline structure and magnetic properties of ferrites having the general formula 5Fe2O3.3M2O3

    Publication Year: 1957, Page(s):261 - 264
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (446 KB)

    First Page of the Article
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  • Measurements of the effect of rain, snow and fogs on 8.6 mm radar echoes

    Publication Year: 1955, Page(s):709 - 714
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (830 KB)

    A radar set has been used to investigate the propagation of 8.6 mm radiation through various types of weather. Measurements have been made of the attenuation caused by the precipitation particles and of the intensity of radiation scattered back. No attempt has been made to correlate the results obtained with drop-size distribution, but the results are plotted against precipitation rate. The attenu... View full abstract»

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  • Precision approach radar

    Publication Year: 1958, Page(s):344 - 350
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1175 KB)

    The paper discusses the operational and technical requirements for a precision-approach radar (P.A.R.) equipment. These requirements may be met by a variety of different practical designs. One such design now in production is described in detail and the principles governing the choice of design are explained. View full abstract»

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  • Standard waveguides and couplings for microwave equipment

    Publication Year: 1955, Page(s):493 - 499
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | 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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  • Electrical analogues for heat exchangers

    Publication Year: 1956, Page(s):65 - 82
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2019 KB)

    The paper is concerned with the derivation of dynamically accurate electrical analogues for heat exchangers with a view to their application in the solution of automatic-control problems relating to the latter. The analogues are based on idealized equations describing the behaviour of the thermal processes involved. Two heat exchangers, both distributed-parameter systems, are considered, and two a... View full abstract»

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  • An electrolytic-tank equipment for the determination of electron trajectories, potential and gradient

    Publication Year: 1956, Page(s):155 - 160
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (861 KB)

    A description is given of a general-purpose electrolytic-tank equipment of simple design. Provision is made for testing either axially-symmetric or two-dimensional models, and the associated circuits can be arranged by switching (a) to measure potentials, (b) to mark equipotentials automatically, (c) to measure potential gradients, and (d) to trace electron trajectories. As a test of accuracy a fa... View full abstract»

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  • Surface roughness and attenuation of precision-drawn, chemically polished, electropolished, electroplated and electroformed waveguides

    Publication Year: 1955, Page(s):251 - 259
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1655 KB)

    Detailed examinations of certain 3cm waveguides have shown that the surface finish of precision-drawn tubing as manufactured at present is quite adequate for most applications. Such surfaces, however, may be improved, if desired, by careful chemical or electrolytic polishing or electroplating in bright baths under closely controlled conditions. Some information on the surface finish of copper guid... View full abstract»

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  • The application of radio altimeters to aircraft approach and landing

    Publication Year: 1958, Page(s):358 - 364
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | 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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  • 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 (13)
    IEEE is not the copyright holder of this material | 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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  • An experimental test of reciprocal transmission over two long-distance high-frequency radio circuits

    Publication Year: 1956, Page(s):227 - 232
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (812 KB)

    Tests have been carried out under carefully controlled conditions to see whether the attenuation of high-frequency signals sent over a given long-distance radio path differs according to the direction of transmission. The results obtained both across the North Atlantic and between Australia and the United Kingdom show that at times the loss in both directions is substantially the same, and that at... View full abstract»

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  • Power measurement at 4 Gc/s by the application of the Hall effect in a semiconductor

    Publication Year: 1959, Page(s):27 - 30
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (561 KB)

    When a semiconducting crystal is mounted in the path of an electromagnetic wave, a Hall e.m.f. is set up in the material along the direction of propagation with a value proportional to the power transmitted. The device operates most satisfactorily when the wave impedance is small, so that for a given power the electric-field component is reduced to a minimum. The use of a resonant cavity with the ... View full abstract»

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  • The indirectly heated thermistor as a precise a.c.-d.c. transfer device

    Publication Year: 1956, Page(s):693 - 703
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1415 KB)

    The paper is an investigation into the possibilities of using an indirectly heated thermistor as a precise a.c./d.c. transfer device over a wide range of frequencies. The thermal drift inevitable with such a device has been examined and a procedure for its elimination developed, resulting in a very high degree of thermal stability. Experiments made on the reproducibility of the thermistor seem to ... View full abstract»

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  • Microwave amplification by means of intrinsic negative resistances

    Publication Year: 1958, Page(s):665 - 672
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | 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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  • Propagation in curved and twisted waveguides of rectangular cross-section

    Publication Year: 1955, Page(s):75 - 80
    Cited by:  Papers (11)
    IEEE is not the copyright holder of this material | 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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  • Saturation magnetization of some ferrimagnetic oxides with hexagonal crystal structures

    Publication Year: 1957, Page(s):255 - 260
    Cited by:  Papers (10)
    IEEE is not the copyright holder of this material | 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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  • Re-entrant transmission-line filter using printed conductors

    Publication Year: 1958, Page(s):173 - 179
    IEEE is not the copyright holder of this material | 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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  • Design of a logarithmic receiver

    Publication Year: 1955, Page(s):69 - 74
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (781 KB)

    The paper contains a short survey of the principles of the successive- detection-type logarithmic receiver for pulsed radar, followed by a detailed description of its video problems. A new detection arrange ment is described, and a mathematical analysis of its operation under practical conditions is given. A video amplifier including a differentiat ing circuit for signals of large dynamic range wi... View full abstract»

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  • Experimental equipment and techniques for a study of millimetre-wave propagation

    Publication Year: 1955
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1684 KB)

    Apparatus has been developed to study the characteristics of radio-wave propagation in the region of the oxygen absorption band (wavelengths, 4¿6mm). The sources of power were crystal harmonic generators and pulse and c.w. magnetrons, and the design of crystal detectors and mixers is described. The construction of waveguide components for this wavelength range is discussed, together with equipmen... View full abstract»

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  • Discussion on "The effect of irradiation on the calibration of 2 cm-diameter sphere-gaps"

    Publication Year: 1955
    IEEE is not the copyright holder of this material | PDF file iconPDF (130 KB)
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  • Design of microwave filters with quarter-wave couplings

    Publication Year: 1956, Page(s):173 - 177
    Cited by:  Papers (11)
    IEEE is not the copyright holder of this material | 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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