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Proceedings of the Institute of Radio Engineers

Includes the top 50 most frequently accessed documents for this publication according to the usage statistics for the month of

  • Simple Inductance Formulas for Radio Coils

    Publication Year: 1928, Page(s):1398 - 1400
    Cited by:  Papers (114)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

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  • A New High Efficiency Power Amplifier for Modulated Waves

    Publication Year: 1936, Page(s):1163 - 1182
    Cited by:  Papers (447)  |  Patents (60)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2320 KB)

    This paper introduces a new form of linear power amplifier for modulated radio-frequency waves. Plate circuit efficiencies of sixty to sixty-five per cent independent of modulation are obtained by means of the combined action of varying load distribution among the tubes and varying circuit impedance over the modulation cycle. The theory of operation is developed and detailed observations on the be... View full abstract»

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  • High Power Outphasing Modulation

    Publication Year: 1935, Page(s):1370 - 1392
    Cited by:  Papers (271)  |  Patents (109)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2704 KB)

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  • Amplitude, Phase, and Frequency Modulation

    Publication Year: 1931, Page(s):2145 - 2176
    Cited by:  Papers (29)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2640 KB)

    This paper presents a comparative theoretical study of amplitude, phase, and frequency modulation. In the first part, the fundamental mathematical expressions for the three types of modulation are derived. They are expressed in three different forms: as amplitude equations, side band equations and modulation vector equations. The amplitude equations indicate the envelope of the radio-frequency dir... View full abstract»

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  • The Temperature Coefficient of Inductance

    Publication Year: 1937, Page(s):448 - 464
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1480 KB)

    The author tries to explain the discrepancy between theory and experiment with regard to the temperature coefficient of inductance of coils. Experiments show that the temperature coefficient of inductance is not equal to the coefficient of linear expansion of the material of the coil, but exceeds it many timies. Such a considerable discrepancy cannot be explained by means of the factors pointed ou... View full abstract»

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  • Frequency Modulation

    Publication Year: 1930, Page(s):1194 - 1205
    Cited by:  Papers (62)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (840 KB)

    The differential equation of a frequency modulated transmitter is considered and the expression of the current as a function of time is derived. Frequency analysis of this function is made for two specific cases, (A) sinusoidal frequency modulation (telephony) and (B), right-angle frequency modulation (telegraphy with "marking" and "spacing" wave). The distribution and amplitudes of the frequencie... View full abstract»

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  • The Nonlinear Theory of Electric Oscillations

    Publication Year: 1934, Page(s):1051 - 1086
    Cited by:  Papers (247)  |  Patents (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2811 KB)

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  • A New Principle in Directional Antenna Design

    Publication Year: 1938, Page(s):333 - 345
    Cited by:  Papers (100)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1408 KB)

    It is shown that in certain types of directional antenna arrays the gain can be increased by arranging so that waves going from the array elements in the direction of maximum transmission are not strictly in phase at large distances. Three examples are given, an end-fire array and two antennas designed to radiate, as far as possible, only in a horizontal plane. In the case of the end-fire array it... View full abstract»

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  • Radio Communication

    Publication Year: 1928, Page(s):40 - 69
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7336 KB)

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  • The Propagation of Radio Waves over the Surface of the Earth and in the Upper Atmosphere

    Publication Year: 1937, Page(s):1203 - 1236
    Cited by:  Papers (181)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3960 KB)

    Completely general formulas are given for computing at any point above a plane earth of finite conductivity the vector electric field for a source which may be a combination of vertical and horizontal electric dipoles or a loop antenna with its axis parallel or perpendicular to the earth. As illustrations of the above general methods, formulas are derived for the ground-wave radiation from (1) a g... View full abstract»

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  • Transmission Theory of Plane Electromagnetic Waves

    Publication Year: 1937, Page(s):1457 - 1492
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3016 KB)

    This paper deals with transmission theory of plane electromagnetic waves in free space and in cylindrical regions of arbitrary cross section. Transmission properties of such waves can be expressed very simply in the same terms as the properties of electric waves guided by a pair of parallel wires. The earlier parts of the paper are concerned with general theorems and the latter parts with their ap... View full abstract»

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  • Beam Transmission of Ultra Short Waves

    Publication Year: 1928, Page(s):715 - 740
    Cited by:  Papers (134)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4496 KB)

    Part I of this paper is devoted to a description of various experiments performed at wavelengths below 200 cm. Curves are given to show the effect of the earth and various types of inductively excited antennas called "wave directors." Part I is concluded with a discussion of beam and horizontally polarized radiation. Part II is devoted chiefly to the magnetron tubes used for the production of very... View full abstract»

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  • Modified Sommerfeld's Integral and Its Applications

    Publication Year: 1936, Page(s):1388 - 1398
    Cited by:  Papers (7)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (808 KB)

    The purpose of this paper is to obtain a certain integral expressing the fundamental wave function and with the aid of this integral to calculate the radiation resistances of small doublets and small loops placed inside an infinite hollow cylinder. Some applications of this integral to calculation of radiation from parallel wires in free space are also discussed. View full abstract»

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  • The Propagation of Radio Waves over the Surface of the Earth and in the Upper Atmosphere

    Publication Year: 1936, Page(s):1367 - 1387
    Cited by:  Papers (169)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4296 KB)

    Simple formulas and graphs are given which represent the ground-wave field intensity at the surface of the earth as radiated from a short vertical antenna at the surface of the earth. The theory is compared to some experimental results reported by other investigators to determine its range of application. The diffraction formula given is theoretically valid only at the lower frequencies; however, ... View full abstract»

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  • Notes on the Theory of Modulation

    Publication Year: 1922, Page(s):57 - 64
    Cited by:  Papers (112)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (856 KB)

    The transmission system of "frequency modulation" (transmission by variation of the frequency of the radiated wave) is mathematically analyzed, and the width of the band of frequencies occupied by this method of transmission at a given speed is compared with the width of the corresponding band for transmission by amplitude variation. It is proved that the frequency modulation system using a spacin... View full abstract»

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  • Automatic Frequency Control

    Publication Year: 1935, Page(s):1125 - 1141
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1792 KB)

    A system is described for electronic control of the local oscillator frequency in a superheterodyne receiver for the purpose of centering the signal carrier in the intermediate-frequency band in spite of inaccuracies of manual tuning and oscillator drift. The system consists of two parts, a discriminator for converting frequency departures into direct voltage differences, and a control circuit for... View full abstract»

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  • Diversity Receiving System of R.C.A. Communications, Inc., for Radiotelegraphy

    Publication Year: 1931, Page(s):529 - 561
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6032 KB)

    The early problems confronting the users of short wavelengths for communications are enumerated. Chief of these were fading and noise level. The phenomenon of fading is explained and the known methods of counteracting it are given. The most outstanding of these is the diversity principle. The various forms of this method are described and reasons developed for the choice of the particular form now... View full abstract»

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  • Skin-Effect Resistance Measurements of Conductors, at Radio-Frequencies up to 100,000 Cycles per Second

    Publication Year: 1916, Page(s):523 - 574
    Cited by:  Papers (16)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5744 KB)

    After defining the skin-effect resistance and reactance ratios, the "spirality" and "proximity effects" for conductors at radio-frequencies, a differential bridge circuit supplied with current from 10,000 to 100,000 cycles by an Alexanderson alternator is described. There are tested at various frequencies straight solid wires, stranded wires (of various spiralities, and also braided), wires with d... View full abstract»

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  • Calculation and Design of Class C Amplifiers

    Publication Year: 1936, Page(s):620 - 632
    Cited by:  Papers (7)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1448 KB)

    A method of calculating the performance of class C triode amplifiers is presented which is based on the assumption that the total space current (Ip+Ig) is proportional to (Eg+Ep/μ)α, where α is a constant, usually close to three halves. The direct-current and fundamental alternating-current components of such a space current pul... View full abstract»

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  • Circuit Relations in Radiating Systems and Applications to Antenna Problems

    Publication Year: 1932, Page(s):1004 - 1041
    Cited by:  Papers (145)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2744 KB)

    Expressions for the self and mutual impedances within a radiating system are developed by the use of the generalized reciprocity theorem. These expressions are given in terms of the distributions of the electric field intensities along the radiators. A method for the determination of the field intensities is outlined. Formulas for the self and mutual impedances in several types of directional ante... View full abstract»

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  • The Interdependence of Frequency Variation and Harmonic Content, and the Problem of Constant-Frequency Oscillators

    Publication Year: 1933, Page(s):958 - 981
    Cited by:  Papers (55)  |  Patents (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1568 KB)

    The investigations of the frequency variations in oscillating systems with negative nonlinear resistance were based until now on the fundamental differential equation of the simple oscillatory circuit. This method, although very exact, is not always sufficiently simple and even not always possible, especially if it concerns more complicated schemes. The symbolic calculus, although very simple in u... View full abstract»

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  • Power Equipment for Aircraft Radio Transmitters

    Publication Year: 1931, Page(s):59 - 77
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2128 KB)

    This paper covers all of the systems of power equipment now used or contemplated for supplying power to aircraft radio transmitters. The various types of power equipment are described and the advantages and disadvantages of each type are discussed. The types of power equipment discussed are (1) the wind driven generator, (2) the dynamotor, (3) the main engine driven generator, (4) the auxiliary en... View full abstract»

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  • The Piezo-Electric Resonator and Its Equivalent Network

    Publication Year: 1928, Page(s):742 - 764
    Cited by:  Papers (45)  |  Patents (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2472 KB)

    The theory of the piezo-electric and the mechanical behavior of a quartz resonator is stated following Voight and Cady. The functions of the quartz as dielectric and as vibrator are shown to be separable and replaceable by a condenser in parallel with an electrical resonator, i.e., a series chain of inductance, resistance, and capacity. For a Curie-cut quartz rod excited lengthwise through the tra... View full abstract»

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  • Frequency Modulation Noise Characteristics

    Publication Year: 1937, Page(s):472 - 514
    Cited by:  Papers (36)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5776 KB)

    Theory and experimental data are given which show the improvements in signal-noise ratio effected by frequency modulation over amplitude modulation. It is shown that above a certain carrier-noise ratio in the frequency modulation receiver which is called the "improvement threshold," the frequency modulation signal-noise ratio is greater than the amplitude modulation signal-noise ratio by a factor ... View full abstract»

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  • Alternating-Current Resistance of Rectangular Conductors

    Publication Year: 1937, Page(s):434 - 447
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4080 KB)

    New experimental data are presented for conductors having ratios of width to thickness of 1 to 1 to 2400 to 1 for frequencies up to eight kilocycles. These data are co-ordinated with existing data furnishing an experimental proof of the "principle of similitude." "Skin effect" formulas are also checked with the experimental data over the range of frequencies for which these relations apply. View full abstract»

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  • Tables for the Calculation of the Mutual Inductance of Any Two Coaxial Single-Layer Coils

    Publication Year: 1933, Page(s):1039 - 1049
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    Absolute formulas for the calculation of the mutual inductance of coaxial solenoids, although they are required for work of the great precision necessary in absolute measurements, are not convenient for routine calculations. Series formulas, although simpler, are limited in the range of their convergence, thus requiring the choice of the proper formula for any given problem. The tables and formula... View full abstract»

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  • A Theory of Noise for Electron Multipliers

    Publication Year: 1938, Page(s):321 - 332
    Cited by:  Papers (80)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1336 KB)

    The noise in secondary-emission electron multipliers is considered from a theoretical viewpoint. The noise properties of a stage are correlated with its secondary-emission properties: the mean value m and mean-square deviation δ2of the number of secondaries per primary. If IpA2 and IsAf2 denote the mean-square noise current lying in the frequency band Δf in the primary- and se... View full abstract»

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  • The Physical Reality of Space and Surface Waves in the Radiation Field of Radio Antennas

    Publication Year: 1937, Page(s):1192 - 1202
    Cited by:  Papers (50)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1296 KB)

    Evidence is presented which indicates that, notwithstanding the change in sign made by Sommerfeld in his 1926 paper on radio wave propagation, the radiation field of a vertical electric dipole may be separated into space and surface wave components. Sommerfeld's original concepts as to the characteristics of two such waves in radio transmission are largely substantiated. It is shown that a space a... View full abstract»

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  • Directional Antennas

    Publication Year: 1937, Page(s):78 - 145
    Cited by:  Papers (44)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6024 KB)

    The object of this paper is to develop analytical methods which are readily applicable to the general problems that arise in array design and to provide design curves that may be used without reference to the field theory underlying the problem. The cases of both driven and parasitic arrays have been treated. Where possible, the results have been tested by comparison with experimental results. The... View full abstract»

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  • A Note on the Source of Interstellar Interference

    Publication Year: 1935, Page(s):1158 - 1163
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (976 KB)

    Further consideration of the data obtained during observations on interstellar interference has shown that these radiations are received any time the antenna system is directed towards some part of the Milky Way system, the greatest response being obtained when the antenna points towards the center of the system. This fact leads to the conclusion that the source of these radiations is located in t... View full abstract»

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  • Distributed Capacity of Single-Layer Coils

    Publication Year: 1934, Page(s):897 - 905
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1105 KB)

    The results of previous work done on the distributed capacity of single-layer coils are briefly outlined. Previous theory and experiment do not agree. The reasons for this disagreement are discussed. Two important parameters were omitted from previous theory. The theoretical part of the present paper yields a formula which includes these two additional parameters. This formula is substantiated by ... View full abstract»

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  • Electrodynamic Speaker Design Considerations

    Publication Year: 1934, Page(s):738 - 750
    Cited by:  Papers (2)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1058 KB)

    The operation of the diaphragm is shown to be so involved as to make its development difficult with any treatment other than an empirical one. Measurements, however, can be made upon a diaphragm to determine its efficiency and to determine the optimum mass of the voice coil to be associated with it. With the voice coil mass so determined, a method is shown for selecting the voice coil diameter and... View full abstract»

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  • Theory of Electron Gun

    Publication Year: 1934, Page(s):1386 - 1411
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2549 KB)

    The function of the electron gun irrespective of the purpose for which the cathode ray tube is used is to generate, to concentrate, to control, and to focus an electron beam to a spot of a desired size. This paper describes the theory of the above-mentioned functions. The point of view of electron optics is presented and the theory of thick electron lenses with variable indexes of refraction is gi... View full abstract»

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  • The Determination of the Direction of Arrival of Short Radio Waves

    Publication Year: 1934, Page(s):47 - 78
    Cited by:  Papers (21)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (7244 KB)

    In this paper are described methods and technique of measuring the direction with which short waves arrive at a receiving site. Data on transatlantic stations are presented to illustrate the use of the methods. The methods described include those in which the phase difference between two points constitutes the criterion of direction, and those in which the difference in output of two antennas havi... View full abstract»

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  • Diode Detection Analysis

    Publication Year: 1933, Page(s):930 - 943
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1472 KB)

    This paper gives the current and output relations for the linear and square-law diode detector in terms of the detection efficiency and the detector and load resistances. The square-law case is shown to yield results similar to the linear for large input potentials and reasonable values of load. Employing the rectification-current-input-voltage characteristic, the graphical method is used to show ... View full abstract»

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  • The Vibrations of Quartz Plates

    Publication Year: 1932, Page(s):808 - 812
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    By vibrating quartz crystals in an electric circuit Wright and Stuart have shown that the crystals break up into different parts while oscillating. The nodal lines thus formed are made visible to the eye by lycopodium powder. In the present paper it is pointed out that the mathematical theory of Chladni plates gives a general equation, A cos-cos -+ Bcos --cos = 0, for the nodal lines of square pla... View full abstract»

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  • Diversity Telephone Receiving System of R.C.A. Communications, Inc.

    Publication Year: 1931, Page(s):562 - 584
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5648 KB)

    Difficulties encountered in the reception of high-frequency radio-telephone signals are described: the chief of these being fading and noise. General methods of solving these difficulties are discussed and the most desirable ones pointed out. The utilization of space diversity of fading is then taken up and methods of applying this principle to the reception of telephone signals are discussed. Thi... View full abstract»

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  • Measurement of Resistance and Impedances at High Frequencies

    Publication Year: 1931, Page(s):452 - 460
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (856 KB)

    It is well known that the resistance of a conductor increases with frequency. At very high frequencies the usual method of measurement fail, especially if the unknown resistance is more than about one hundred ohms. In the following it is shown that the absolute value of the unknown impedance, when put across the end of a transmission line, is a simple function of the ratio of the currents, measure... View full abstract»

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  • Variation of the Inductance of Coils due to the Magnetic Shielding Effect of Eddy Currents in the Cores

    Publication Year: 1930, Page(s):1750 - 1764
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1328 KB)

    An analysis is made of the shielding effect of eddy currents on the flux in the interior of cores of cylindrical or flat sheet material. It is shown that the counter voltage of self inductance of an iron-cored coil is due only to the component of flux in the core which is in phase with the flux at the surface of the core. Expressions are obtained and curves plotted showing the variations of induct... View full abstract»

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  • The RCA World-Wide Radio Network

    Publication Year: 1930, Page(s):1732 - 1742
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1248 KB)

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  • Push-Pull Piezo-Electric Oscillator Circuits

    Publication Year: 1930, Page(s):95 - 100
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (680 KB)

    Comparative tests have been made of five different push-pull piezo-electric oscillator circuits. Two of these circuits use three-element tubes: (1) crystal in four-electrode mounting connected to the grids and anodes, (2) crystal in two-electrode mounting connected to the grids. The other circuits use four-element tubes, (3) screen-grid tubes with the crystal in a four-electrode mounting connected... View full abstract»

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  • Reciprocal Theorems in Radio Communication

    Publication Year: 1929, Page(s):952 - 956
    Cited by:  Papers (32)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (560 KB)

    Two reciprocal theorems, the generalized Rayleigh theorem and the Sommerfeld-Pfrang theorem are of great theoretical importance in radiocommunication. A careful analysis of these theorems and their mathematical derivations shows that they are quite distinct and their practical fields of application different. In particular it shows that the Sommerfeld-Pfrang theorem labors under restrictions, impl... View full abstract»

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  • The Calculation of the Inductance of Single-Layer Coils and Spirals Wound with Wire of Large Cross Section

    Publication Year: 1929, Page(s):2053 - 2063
    Cited by:  Papers (10)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1216 KB)

    Formulas are given for both wires of round cross section and wires of rectangular cross section. These are obtained by an extension of the Rosa Method. Tables are given from which the geometric mean distances of rectangles which enter in the formulas may be readily obtained. View full abstract»

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  • Designs and Efficiencies of Large Air Core Inductances

    Publication Year: 1925, Page(s):755 - 766
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4064 KB)

    Representative designs of large air core antenna tuning inductances are described, in types suitable for outdoor and indoor service. The latest improved designs are described in greater detail and compared with earlier designs on a basis of efficiency and kilovolt-ampere capacity. Formulas are given for calculating the ohmic and eddy current conductor power factor of coils using finely stranded, s... View full abstract»

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  • The Piezo-Electric Resonator

    Publication Year: 1922, Page(s):83 - 114
    Cited by:  Papers (34)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3856 KB)

    The general theory of piezo-electricity is summarized, and the equations applicable to quartz are stated. The "concentrated mass theory" of longitudinal vibrations in rods is then developed, and the properties of the "resonance circle" discussed. On this theoretical basis the equations for the reaction of a piezo-electric resonator upon a circuit are derived, and solved by a graphical method. From... View full abstract»

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  • Theory and Operating Characteristics of the Thermionic Amplifier

    Publication Year: 1919, Page(s):97 - 128
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3064 KB)

    The theory of operation of the three-electrode thermionic vacuum tube given in this paper is based on the fundamental equation of the family of characteristic curves for various plate and grid voltages. This equation, which may be written I= a( R_ EB + 2; E,+ C) where E<L>b</L> and E<L>c</L>, are the plate and grid voltages respectively, and α, μ<L>0</L&g... View full abstract»

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  • Some Recent Developments in the Audion Receiver

    Publication Year: 1915, Page(s):215 - 238
    Cited by:  Papers (33)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3312 KB)

    The action of the audion as a detector and simple amplifier is explained, with the method of verification of the theory by means of oscillograms. To reinforce the oscillations in the grid circuit two methods are employed: first, to couple the grid circuit to the wing circuit and arrange the latter to permit radio frequency currents to pass freely in it; and second, to use a large inductance in the... View full abstract»

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  • A Theoretical Study of the Three-Element Vacuum Tube

    Publication Year: 1919, Page(s):187 - 200
    Cited by:  Papers (20)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1112 KB)

    Starting with a functional relation between the plate current and the grid and plate voltages, the plate current variation is deduced to a sufficient degree of approximation in terms of constants of the tube and the grid voltage variation (for pure resistance in the output circuit). The requirements of amplification, modulation, and detection are then deduced from the equations obtained. Heterodyn... View full abstract»

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  • Formulas and Tables for the Calculation and Design of Single-Layer Coils

    Publication Year: 1924, Page(s):193 - 208
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1064 KB)

    A set of tables for the simple calculation of the inductance of single layer helical and polygonal coils and their design is given; together with full illustrations of their use. View full abstract»

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  • Multiplex Radio Telegraphy and Telephony

    Publication Year: 1920, Page(s):451 - 467
    Cited by:  Papers (2)
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    The authors classify the chief methods of multiplex radio communication as multi-radio frequency, mono-radio-frequency with multi-audio-frequency, and mono-radio frequency modulated at several super-audio-frequencies each of which is itself modulated at audio frequency. The authors classify antenna systems for the first method as of the series loop type, the branch type, and the mesh type. Each of... View full abstract»

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Aims & Scope

This Periodical ceased production in 1938. The current retitled publication is Proceedings of the IEEE.

Full Aims & Scope