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Proceedings of the IRE

Issue 9 • Sept. 1952

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Displaying Results 1 - 25 of 29
  • Table of contents

    Publication Year: 1952, Page(s): 1025
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  • Chairmen of New IRE Professional Groups

    Publication Year: 1952, Page(s): 1026
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  • The Engineer in World Affairs

    Publication Year: 1952, Page(s): 1027
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  • The IRE Professional Group System

    Publication Year: 1952, Page(s):1028 - 1029
    Cited by:  Papers (1)
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  • High-Frequency Crystal Units for Primary Frequency Standards

    Publication Year: 1952, Page(s):1030 - 1033
    Cited by:  Papers (38)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1677 KB)

    A new approach to the design of crystal units for primary frequency standard use has resulted in crystal units in the 3- to 20-mc frequency range characterized by high Q and low capacitance in the series arm of the equivalent electrical circuit. By utilizing the overtone frequency of specially shaped AT-cut quartz plates, both Q and the rate of impedance change with frequency are enhanced together... View full abstract»

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  • A Coaxial Power Triode for 50-KW Output up to 110 MC

    Publication Year: 1952, Page(s):1033 - 1037
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2932 KB)

    The introduction of all coaxial ring-seal terminals, a thoriated cathode, a re-entrant anode with integral coolant jacket, and a novel assembling technique has facilitated the development of a new power triode for 50-kw rf output up to 110-mc frequency. Increased power output ratings are available at lower frequencies. The bandwidth is suitable for television broadcasting. Design requirements are ... View full abstract»

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  • Inverted Magnetron

    Publication Year: 1952, Page(s):1038 - 1041
    Cited by:  Papers (7)
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    A radically different type of magnetron is described in which the positions of the cathode and the anode segments are inverted from those in ordinary magnetrons. The direction of curvature of the interaction space of this magnetron is therefore opposite that of conventional magnetrons. Electronic efficiencies of 50 to 80 per cent have been measured on these structures and static input impedances a... View full abstract»

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  • Accuracy of Bolometric Power Measurements

    Publication Year: 1952, Page(s):1042 - 1048
    Cited by:  Papers (13)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1892 KB)

    When the RF power distribution along a bolometer wire differs from the low-frequency power distribution, the substitution method of measurement may give an error unless certain special conditions are satisfied. These conditions are most closely fulfilled, in practice, by a convectively cooled wire whose length to diameter ratio is very large. The possible error for the case of a Wollaston wire mou... View full abstract»

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  • Identification of Tornadoes by Observation of Waveform Atmospherics

    Publication Year: 1952, Page(s):1049 - 1052
    Cited by:  Papers (2)
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    Research on the characteristics of atmospherics peculiar to tornadoes has been in progress at the Oklahoma Agricultural and Mechanical College since 1947. It has been discovered that high-energy thunderstorms which develop into tornadoes generate discharges with a preponderance of frequencies in the 200- to- 400-kc band. The number of these discharges increases as tornado time is approached. View full abstract»

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  • Cosmic Radio Noise Intensities in the VHF Band

    Publication Year: 1952, Page(s):1053 - 1060
    Cited by:  Papers (19)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2537 KB)

    During 1948 and 1949, the National Bureau of Standards conducted continuous, broad-directivity measurements of the cosmic radio noise intensities at frequencies between 25 and 110 mc. Their purpose was to evaluate the importance of this noise from the standpoint of its interference with radio communication. The results show a regular daily variation in noise corresponding to the movement of the pr... View full abstract»

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  • The Effective Bandwidth of Video Amplifers

    Publication Year: 1952, Page(s): 1060
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  • Interaction Between Surface-Wave Transmission Lines

    Publication Year: 1952, Page(s):1061 - 1065
    Cited by:  Papers (10)
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    An important question connected with surface-wave transmission lines is the interaction between them or with other wires which act like surface waveguides. An analysis is made of two parallel lines with the provision that the coupling is small. When the two lines are identical, there is maximum interaction, and under suitable conditions, complete power transfer from one line to the other occurs. T... View full abstract»

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  • Part III-Investigations of High-Frequency Echoes

    Publication Year: 1952, Page(s):1065 - 1068
    Cited by:  Papers (4)
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    A high-frequency sky-wave propagation experiment, carried out on November 19, 1944 by the Institute of Physics, Luftkriegsakademie, Gatow, in co-operation with the Deutsche Reichspost, is described. Signals of duration of 10 to 12 msec were transmitted at 0.5-sec intervals from DLO, Rehmate (near Berlin) on 19,947 kc so that echoes which travelled repeatedly around the earth might be studied. The ... View full abstract»

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  • The Electric Polarizability of Apertures of Arbitrary Shape

    Publication Year: 1952, Page(s):1069 - 1071
    Cited by:  Papers (29)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1464 KB)

    An electrolytic-tank method of measurement developed in a previous paper has been used to obtain extensive data on the electric polarizability of apertures of various practical shapes. These shapes include rectangular slots, rounded slots, crossed slots, rosettes, and dumbbells. The measured values are presented in this paper in both graphical and tabular form. The accuracy is believed to be of th... View full abstract»

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  • Multi-Element Directional Couplers

    Publication Year: 1952, Page(s):1071 - 1078
    Cited by:  Papers (15)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (5800 KB)

    It is shown that the backward wave in a directional coupler is related to the shape of the function describing the coupling between tansmission lines by the Fourier transform. This facilitates the design of directional couplers for arbitrary directivities over any prescribed frequency band. Tightly coupled directional couplers are analyzed in simple terms, and it is shown that any desired loss rat... View full abstract»

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  • Nonsynclronous Time Division with Holding and with Random Sampling

    Publication Year: 1952, Page(s):1079 - 1088
    Cited by:  Papers (10)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3162 KB)

    There is a general type of system in which an indefinitely large number of transmitters can have access to any of an indefinitely large number of receivers over a medium of limited bandwidth. In these systems, signal-to-noise ratio goes down as more transmitters are used simultaneously. This paper describes a particular system which sends samples by means of coded pulse groups sent at random times... View full abstract»

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  • A Compact Broad-Band Microwave Quarter-Wave Plate

    Publication Year: 1952, Page(s):1089 - 1090
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (295 KB)

    Differential phase shift between two orthogonal TE11 waves in a circular hollow waveguide is achieved with a reflectionless array of capacitive pins. Using transmission-line theory, an analysis of such a structure is made and, under the assumption that the pin susceptance varies with frequency as jωC, a broad-band 3-pin array acting as a quarter-wave plate may be designed. Such ... View full abstract»

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  • Fundamental Aspects of Linear Multiplexing

    Publication Year: 1952, Page(s):1091 - 1097
    Cited by:  Papers (2)
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    A linear multiplex system is defined as one in which the separation of signals belonging to different channels is achieved by the use of linear, time-variant or time-invariant, filters. It is shown that a fundamental property of such systems is that the sets of signals associated with their respective channels are linear and disjoint. Conversely, signals that belong to linear and disjoint sets can... View full abstract»

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  • A Method for the Construction of Minimum-Redundancy Codes

    Publication Year: 1952, Page(s):1098 - 1101
    Cited by:  Papers (1735)  |  Patents (194)
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    An optimum method of coding an ensemble of messages consisting of a finite number of members is developed. A minimum-redundancy code is one constructed in such a way that the average number of coding digits per message is minimized. View full abstract»

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  • Coding with Linear Systems

    Publication Year: 1952, Page(s):1101 - 1103
    Cited by:  Papers (24)
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    Message transmission over a noisy channel is considered. Two linear networks are to be designed: one being used to treat the message before transmission and the second to filter the treated message plus channel noise at the receiving end. The mean-square error between the actual transmission circuit output and the delayed message is minimized for a given allowable average signal power by proper ne... View full abstract»

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  • Notes on Methods of Transmitting the Circular Electric Wave Around Bends

    Publication Year: 1952, Page(s):1104 - 1113
    Cited by:  Papers (24)
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    The tendency for energy to be converted out of the circular electric wave in bent round pipe may be avoided by one of three general approaches: (1) by removing the degeneracy between TE01 and TM11, (2) by converting to a normal mode of the bent guide at both ends of the bend, and (3) by utilizing dissipation in the unwanted modes to prevent power transfer to them. All three approaches are discusse... View full abstract»

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  • An Improved Theory of the Receiving Antenna

    Publication Year: 1952, Page(s):1113 - 1120
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1657 KB)

    The theory of the center-loaded receiving antenna is improved by introducing the expansion parameter of King and Middleton, and generalized to take account of a load consisting of a two-wire line with finite spacing. First-order formulas for the distribution of current are obtained, together with approximate second-order formulas for the complex effective length of the antenna. Theoretical results... View full abstract»

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  • Cross Polarization of Scattered Radio Waves

    Publication Year: 1952, Page(s):1120 - 1123
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    The polarization of the signal reaching a receiving antenna by the scattering mechanism proposed by Booker and Gordon is investigated. Equations are presented which give the response of dipole antennas oriented horizontally, vertically, and axially, relative to a linear polarized source. The relative response of the three antennas is calculated for selected values of the scattering parameters and ... View full abstract»

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  • Correspondence

    Publication Year: 1952, Page(s):1124 - 1125
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  • Contributors to Proceedings of the I.R.E.

    Publication Year: 1952, Page(s):1126 - 1128
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Aims & Scope

This Periodical ceased production in 1962. The current retitled publication is Proceedings of the IEEE.

Full Aims & Scope