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Proceedings of the Institute of Radio Engineers

Issue 3 • Date March 1938

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  • [Front cover]

    Publication Year: 1938, Page(s): c1
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  • Institute of Radio Engineers - Forthcoming Meetings

    Publication Year: 1938, Page(s): c2
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  • Contents

    Publication Year: 1938, Page(s): i
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  • General Information

    Publication Year: 1938, Page(s): ii
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  • Institute sections

    Publication Year: 1938, Page(s): iii
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  • Geographical Location of Members Elected February 2, 1938

    Publication Year: 1938, Page(s):iv - v
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  • Applications for Membership

    Publication Year: 1938, Page(s):vi - vii
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  • Officers and Board of Directors

    Publication Year: 1938, Page(s): viii
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  • Institute news and radio notes

    Publication Year: 1938, Page(s):247 - 275
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  • Corrections

    Publication Year: 1938, Page(s): 276
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  • Radio Progress during 1937: Part I - Report by the Technical Committee on Electroacoustics

    Publication Year: 1938, Page(s):277 - 284
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  • Radio Progress during 1937: Part II - Report by the Technical Committee on Electronics

    Publication Year: 1938, Page(s):285 - 290
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  • Radio Progress during 1937: Part III - Report by the Technical Committee on Radio Receivers

    Publication Year: 1938, Page(s):291 - 297
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  • Radio Progress during 1937: Part IV - Report by the Technical Committee on Television and Facsimile

    Publication Year: 1938, Page(s):298 - 301
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  • Radio Progress during 1937: Part V - Report by the Technical Committee on Transmitters and Antennas

    Publication Year: 1938, Page(s):302 - 307
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  • A New System of Inductive Tuning

    Publication Year: 1938, Page(s):308 - 320
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    A sliding-contact variable inductance is described wherein contact reliability over long life is secured by a unique carriage arrangement and parallel nibs at the point of contact. The coil is rotatable, the high-potential contact being taken off a ring at one end. The contactor and unused end of the coil are at ground potential. The entire variable coil is used and the high-frequency limit is det... View full abstract»

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  • A Theory of Noise for Electron Multipliers

    Publication Year: 1938, Page(s):321 - 332
    Cited by:  Papers (75)
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    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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  • A New Principle in Directional Antenna Design

    Publication Year: 1938, Page(s):333 - 345
    Cited by:  Papers (89)  |  Patents (3)
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    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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  • Excess-Energy Electrons and Electron Motion in High-Vacuum Tubes

    Publication Year: 1938, Page(s):346 - 371
    Cited by:  Papers (6)
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    In the development of magnetron oscillators, one of the principal difficulties has been the overheating of the cathode. The present article discusses an effect which is at least partially responsible for this, and which consists in the gaining of excess energy by some electrons, which then bombard the cathode. The effect is of importance also because of its bearing on transit time, orbit shape, tu... View full abstract»

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  • Relations Existing between Voltage Impulses of Exponential Form and the Response of an Oscillating Circuit

    Publication Year: 1938, Page(s):372 - 378
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    The superposition integral is used to express the voltage produced in the inductance of a tuned circuit in response to a voltage impulse of exponential form. The expression is given in terms of the voltage and time constant of the impulse and the frequency and decrement of the oscillating circuit. This method is more direct and more easily manageable than the conventional method which expresses th... View full abstract»

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  • Characteristics of the Ionosphere at Washington, D.C., January, 1938

    Publication Year: 1938, Page(s):379 - 382
    Cited by:  Papers (1)
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    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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  • Correspondence

    Publication Year: 1938, Page(s):383 - 384
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  • Book review

    Publication Year: 1938, Page(s): 385
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  • Contributors to this issue

    Publication Year: 1938, Page(s): 386
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Aims & Scope

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

Full Aims & Scope