By Topic

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

  • Simultaneous Sending and Receiving

    Publication Year: 1919, Page(s):363 - 378
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2624 KB)

    A system of simultaneous reception and transmission for radio telephony is described, together with the reasons for its use. It involves transferring the received speech (from a separate receiving antenna at some distance from the transmitting antenna) to the subscriber's line, and transferring speech originating at the subscriber's station to the radiophone transmitter. Another type of duplex rad... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Simple Inductance Formulas for Radio Coils

    Publication Year: 1928, Page(s):1398 - 1400
    Cited by:  Papers (95)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (728 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A New High Efficiency Power Amplifier for Modulated Waves

    Publication Year: 1936, Page(s):1163 - 1182
    Cited by:  Papers (408)  |  Patents (48)
    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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • High Power Outphasing Modulation

    Publication Year: 1935, Page(s):1370 - 1392
    Cited by:  Papers (255)  |  Patents (99)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2704 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Nonlinear Theory of Electric Oscillations

    Publication Year: 1934, Page(s):1051 - 1086
    Cited by:  Papers (231)  |  Patents (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2811 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The High Power Station at Malabar, Java

    Publication Year: 1924, Page(s):693 - 722
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (14096 KB)

    The construction of the Malabar, Java station of the Dutch East Indian Administration for direct communication with Holland is described. The antenna structure, high power and low power arcs, the alternator transmitter, and the receiving arrangement are considered. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Beam Transmission of Ultra Short Waves

    Publication Year: 1928, Page(s):715 - 740
    Cited by:  Papers (126)  |  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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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 (178)  |  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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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 (167)  |  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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Multiple Unit Steerable Antenna for Short-Wave Reception

    Publication Year: 1937, Page(s):841 - 917
    Cited by:  Papers (36)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (11712 KB)

    This paper discusses a receiving system employing sharp vertical-plane directivity, capable of being steered to meet the varying angles at which short radio waves arrive at a receiving location. The system is the culmination of some four years effort to determine the degree to which receiving antenna directivity may be carried to increase the reliability of short-wave transatlantic telephone circu... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Ultra-Short-Wave Propagation

    Publication Year: 1933, Page(s):427 - 463
    Cited by:  Papers (100)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4296 KB)

    Part I of this paper first describes a method of measuring attenuation and field strength in the ultra-short-wave range. A résumé of some of the quantitative experiments carried out in the range between 17 megacycles (17 meters) and 80 megacycles (3.75 meters) and with distances up to 100 kilometers is then given. Two cases are included: (1) "Optical" paths over sea water and (2) "Nonopt... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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 (7)
    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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A New Principle in Directional Antenna Design

    Publication Year: 1938, Page(s):333 - 345
    Cited by:  Papers (93)  |  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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Notes on the Theory of Modulation

    Publication Year: 1922, Page(s):57 - 64
    Cited by:  Papers (105)
    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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Circuit Relations in Radiating Systems and Applications to Antenna Problems

    Publication Year: 1932, Page(s):1004 - 1041
    Cited by:  Papers (144)
    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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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 (52)  |  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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Electromagnetic Waves in Hollow Metal Tubes of Rectangular Cross Section

    Publication Year: 1938, Page(s):1520 - 1555
    Cited by:  Papers (19)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3752 KB)

    The theory of the transmission of electromagnetic waves in hollow conducting pipes of rectangular cross section is derived for perfectly conducting and for imperfectly conducting materials. Special attention is given to the type of wave that has only one transverse and everywhere parallel component of electric intensity, and the results of experiments on this wave are reported. Expressions for the... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Radio Transmission Measurements

    Publication Year: 1923, Page(s):115 - 152
    Cited by:  Papers (17)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (9064 KB)

    The paper divides naturally into three sections. The first section briefly analyses the radio transmission circuit into (a) the sending or radiating portion, (b) the transmitting portion consisting of the ether path thru which the radiated waves travel, and (c) the receiving portion. The relation of these from the standpoint of the radio transmission engineer is discussed, pointing out the need of... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Nonuniform Transmission Line

    Publication Year: 1932, Page(s):1052 - 1063
    Cited by:  Papers (25)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    The problem of transmission of periodic waves along a transmission line, whose series impedance and shunt admittance per unit length very as any powers of the distance from some point, is solved. The solution is given in terms of Bessel functions. A length of such a line is considered as a four-terminal network, and the more important parameters of the network are given. From these parameters one ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Transmission of Electromagnetic Waves in Hollow Tubes of Metal

    Publication Year: 1936, Page(s):1298 - 1328
    Cited by:  Papers (49)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2656 KB)

    Electromagnetic energy may be transmitted through the inside of hollow tubes of metal, provided the frequency is greater than a certain critical value; this value is inversely proportional to the tube radius and to the dielectric coefficient for the tube interior. Calculations and measurements of the more important characteristics of this new kind of transmission system have been made, and the con... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • On the Origin of the Super-Heterodyne Method

    Publication Year: 1926, Page(s):695 - 698
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (528 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Determination of the Direction of Arrival of Short Radio Waves

    Publication Year: 1934, Page(s):47 - 78
    Cited by:  Papers (19)
    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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Automatic Tuning, Simplified Circuits, and Design Practice

    Publication Year: 1937, Page(s):289 - 313
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2528 KB)

    The principles underlying automatic frequency control of the oscillator in superheterodyne receivers have been outlined in previous papers given before the Institute of Radio Engineers. This paper deals with simplification and improvements in operation of frequency control circuits and their application to automatic (electronic) tuning control. A new type of "discriminator" which differentiates be... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Piezo-Electric Resonator and Its Equivalent Network

    Publication Year: 1928, Page(s):742 - 764
    Cited by:  Papers (44)  |  Patents (8)
    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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Basic Principles of Super-Regenerative Reception

    Publication Year: 1938, Page(s):76 - 106
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4776 KB)

    By means of cathode-ray oscillograms and mathematical analyses the principal phenomena occurring in superregenerative receivers are explained. The results verify an earlier theory that in the separately quenched detector the received signal merely causes the detector to oscillate at maximum output for a longer period during each quench cycle, without increasing the maximum amplitude of the oscilla... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Alternating-Current Resistance of Rectangular Conductors

    Publication Year: 1937, Page(s):434 - 447
    Cited by:  Papers (28)
    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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A New System of Short Wave Amplification

    Publication Year: 1921, Page(s):3 - 11
    Cited by:  Papers (16)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (936 KB)

    The various possible known methods of amplifying incoming signals of very short wave length (below 600 meters) are described and their limitations considered. The new method then described consists (for continuous wave reception) of the following steps:- 1. Heterodyning, with the production of a beat frequency which is itself a radio frequency (for example, 100,000 cycles per second). 2. Rectifica... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Radiation Measurements of a Short-Wave Directive Antenna at the Nauen High Power Radio Station

    Publication Year: 1931, Page(s):812 - 838
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2784 KB)

    This paper is a report on the experimental investigation of the, raidiation of a short-wave directive antenna at Nauen. Measurements were made on the ground and also in the air, using an airplane. The results, plotted in the form of radiation characteristic curves, were compared with calculated radiation characteristics. In the case of the horizontal radiation characteristic the agreement between ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Polyphase Rectification Special Connections

    Publication Year: 1931, Page(s):78 - 102
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2496 KB)

    Characteristics of various rectifier circuits and factors governing their selection are given. It is pointed out that in general, the double 3-phase circuit is most desirable from the standpoint of transformer and tube capacity requirements for mercury pool type tubes, and the 6-phase single Y for hot cathode mercury vapor tubes or high vacuum tubes, but that other factors may make other circuits ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Ground Systems as a Factor in Antenna Efficiency

    Publication Year: 1937, Page(s):753 - 787
    Cited by:  Papers (30)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4968 KB)

    Theoretical considerations concerning the losses in ground systems are advanced. These considerations indicate the feasibility of antennas much less than a quarter wave length tall, for low power broadcast use. The desirability of large ground systems is also indicated. Experimental data are given which show that an eighth-wave antenna is practically as efficient as a quarter-wave antenna. It is a... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Directional Antennas

    Publication Year: 1937, Page(s):78 - 145
    Cited by:  Papers (43)  |  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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Design of Transformers for Audio-Frequency Amplifiers with Preassigned Characteristics

    Publication Year: 1928, Page(s):1742 - 1770
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4632 KB)

    The requirements of an ideal transformer are stated, and the difficulties encountered in attempting to build transformers for interstage coupling units which will meet these requirements are pointed out. The aim in design for audio amplifiers is stated to be a reasonable voltage amplification for one tube and one transformer which is independent of the frequency over a range necessary for broadcas... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Image Suppression in Superheterodyne Receivers

    Publication Year: 1935, Page(s):569 - 575
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (960 KB)

    Superheterodyne receivers are particularly sensitive to interference at the intermediate frequency and at the image frequency. Several types of selective circuits are described for coupling the antenna to the grid of the first tube which have especially great selectivity against such interference. The number of selective circuits which must be tuned to the signal is thereby minimized. Performance ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Distributed Capacity of Single-Layer Coils

    Publication Year: 1934, Page(s):897 - 905
    Cited by:  Papers (17)
    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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Single- and Coupled-Circuit Systems

    Publication Year: 1930, Page(s):983 - 1016
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3560 KB)

    This article discusses networks based upon singly-tuned circuits, and upon coupled circuits with primary and secondary both resonant to the same frequency. Transmission equations are developed and it is shown that for a desired possible transmission-curve shape, the sum of all decrement coefficients must be a certain amount, readily computable for coupled circuits as well as for single circuits. C... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • 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»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Two-Mesh Tuned Coupled Circuit Filters

    Publication Year: 1937, Page(s):230 - 272
    Cited by:  Papers (12)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3816 KB)

    Tuned coupled circuits have been the subject of many investigations, but few of these have produced results which are useful to the design engineer. A direct attack, avoiding the special terminology and procedures of general filter theory, seems the most effective. Several such attacks have been made, but either the results have not been fully developed, or serious restrictions have been placed up... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Abbreviated Method for Calculating the Inductance of Irregular Plane Polygons of Round Wire (Part I of paper, "On the Calculation of Closed Aerials")

    Publication Year: 1927, Page(s):1013 - 1039
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2656 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Super-Heterodyne-Its Origin, Development, and Some Recent Improvements

    Publication Year: 1924, Page(s):539 - 552
    Cited by:  Papers (18)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3640 KB)

    This paper describes the development of the super-heterodyne receiver from a wartime invention into a commercial form of broadcast receiver apparatus now available to the general public. The success of the development is due to the low filament consumption vacuum tube and to the reduction in the number of tubes required by self-heterodyning, reflexing, and improvement in transformer design. Instan... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Whistling Tones from the Earth

    Publication Year: 1930, Page(s):1155 - 1159
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (584 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Quasi Transients in Class B Audio-Frequency Push-Pull Amplifiers

    Publication Year: 1936, Page(s):1522 - 1541
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2392 KB)

    Although class B audio-frequeny amplifiers have been analyzed by many previous investigators, the effect of the leakage inductance of the output transformer or choke in producing quasi transients, i.e., exponential terms which recur periodically, has passed unnoticed. This paper gives equations for determining these quasi transients in the wave forms of the plate voltage, the plate current, and th... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Causes for the Increase of the Admittances of Modern High-Frequency Amplifier Tubes on Short Waves

    Publication Year: 1938, Page(s):1011 - 1032
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2456 KB)

    By recent measurements of input loss, output loss, and feed-back capacitance of modern high-frequency amplifier tubes (pentodes) up to 300 megacycles, a considerable increase of these values in the short-wave range has become manifest. Contrary to the opinion, expressed in several recent publications, for many types of valves the main cause of this increase must not be sought in electron-transit-t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

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

Full Aims & Scope