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Proceedings of the IRE

Issue 2 • Date Feb. 1940

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Displaying Results 1 - 21 of 21
  • [Front cover]

    Publication Year: 1940, Page(s): c1
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  • Joint Meeting with American Section, International Scientific Radio Union

    Publication Year: 1940, Page(s): c2
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  • Table of contents

    Publication Year: 1940, Page(s): nil1
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  • Information about the Society

    Publication Year: 1940, Page(s): nil2
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  • The Impetus Which Aviation Has Given to the Application of Ultra-High Frequencies

    Publication Year: 1940, Page(s):49 - 51
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1224 KB)

    This paper briefly mentions some of the most important applications of ultra-high frequencies in the field of aeronautics and describes one of them in some detail. This is the ultra-high-frequency radio range, a short-wave counterpart of the conventional long-wave radio range which now provides directional guidance along the Federal Airways of the United States. A direct comparison, is made betwee... View full abstract»

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  • Surface-Controlled Mercury-Pool Rectifier

    Publication Year: 1940, Page(s):52 - 59
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2944 KB)

    A vertical water-jacketed pyrex cylinder having an anode at the upper end, a mercury-pool cathode in the lower end, and a high vapor pressure in the region of the cathode constitutes a new type of controlled high-voltage rectifier or switch. A boiler and deflector or nozzle system maintains a relatively high vapor pressure and corresponding low sparking potential in the region of the cathode while... View full abstract»

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  • A Distortion-Free Amplifier

    Publication Year: 1940, Page(s):59 - 66
    Cited by:  Papers (1)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1640 KB)

    Distortion in tube amplifiers may be eliminated by using an auxiliary amplifier in which a fraction of the main-amplifier input voltage combined with a fraction of the distorted main-amplifier output voltage produces a correcting component which, combined with the total output, restores this to the same shape as the input. View full abstract»

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  • Frequency Modulator

    Publication Year: 1940, Page(s):66 - 67
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (472 KB)

    The frequency deviation obtainable in a reactance-tube frequency-modulator-oscillator combination is limited by two resistances which shunt the oscillator tank. The first is due to the plate resistance of the reactance tube and the second, to the fact that the voltage on the reactance-tube's grid is less than 90 degrees out of phase with the plate voltage. A method is deduced from a simple mathema... View full abstract»

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  • Cosmic Static

    Publication Year: 1940, Page(s):68 - 70
    Cited by:  Papers (11)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1239 KB)

    In 1932 Jansky published the first of a series of papers indicating that a certain type of static appears to come from space and in particular from the plane of the Milky Way. Very few other data are available on the disturbance. Various hypotheses have been advanced to account for the phenomenon but all have failed under quantitative calculation. The writer became interested in this work about th... View full abstract»

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  • The Application of Feedback to Wide-Band Output Amplifiers

    Publication Year: 1940, Page(s):71 - 76
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1432 KB)

    A mathematical analysis is made of a typical two-stage output amplifier designed for the amplification of a wide range of frequencies incorporating feedback over the two stages. In wide-band amplifiers the use of output transformers is usually ruled out due to frequency limitations, and it is found that the time constant of the feedback circuit cannot be neglected. The effect of the feedback circu... View full abstract»

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  • Antenna Arrays with Closely Spaced Elements

    Publication Year: 1940, Page(s):76 - 84
    Cited by:  Papers (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2024 KB)

    A number of arrays called "flat-top beam" antennas using closely spaced out-of-phase elements are described. Gain equations are developed for arrays with closely spaced horizontal elements above perfectly conducting ground. Curves showing the effect of spacing and loss resistance on the gain and resistance of a "flat-top beam" are presented. It is shown that at small spacings, loss resistance has ... View full abstract»

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  • A Generalized Coupling Theorem for Ultra-High-Frequency Circuits

    Publication Year: 1940, Page(s):84 - 87
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (872 KB)

    It is proved that a distributed potential gradient of any form maintained along a parallel line is, in general, equivalent to three pairs of point generators of proper amplitudes and phases suitably arranged along the line. In the special case in which the potential gradient is characterized by cosine (direct) symmetry with respect to a central reference co-ordinate, a single pair of point generat... View full abstract»

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  • Bridged-T Measurement of High Resistances at Radio Frequencies

    Publication Year: 1940, Page(s):88 - 90
    Cited by:  Papers (3)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1264 KB)

    A bridged-T circuit suitable to the measurement of high resistances at radio frequencies is analyzed and a measuring set incorporating the circuit is described. The device is capable of measuring resistances ranging from 0.01 to 10 megohms with an accuracy approximating the precision of setting of the adjulstable standard elements of the apparatus. View full abstract»

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  • Characteristics of the Ionosphere at Washington, D.C., December, 1939, with Predictions for March, 1940

    Publication Year: 1940, Page(s):91 - 92
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (299 KB)

    Data on the ordinary-wave critical frequencies and virtual heights of the ionospheric layers are presented for the period indicated in the title. The monthly average values of the maximum usable frequencies for undisturbed days, for radio transmission by way of the regular layers is also provided. View full abstract»

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  • Institute news and radio notes

    Publication Year: 1940, Page(s):93 - 95
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  • Books

    Publication Year: 1940, Page(s):95 - 96
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  • Contributors

    Publication Year: 1940, Page(s):97 - 98
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  • Current Literature

    Publication Year: 1940, Page(s): ix
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  • Engineering directory [advertisement]

    Publication Year: 1940, Page(s): x
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  • Index [of advertisers]

    Publication Year: 1940, Page(s): x
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  • Positions open

    Publication Year: 1940, Page(s): x
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Aims & Scope

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

Full Aims & Scope