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Proceedings of the Institute of Radio Engineers

Issue 6 • Date Dec. 1920

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Displaying Results 1 - 9 of 9
  • [Front cover]

    Publication Year: 1920, Page(s):c1 - c2
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    Freely Available from IEEE
  • Contents

    Publication Year: 1920, Page(s): 449
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  • General Information

    Publication Year: 1920, Page(s): 449
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  • Officers and Board of Direction, 1920

    Publication Year: 1920, Page(s): 450
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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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  • A Contribution to the Theory of Magnetic Frequency Changers

    Publication Year: 1920, Page(s):468 - 492
    Cited by:  Papers (6)
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    Using iron-core one-to-one transformers, with (or without) supplementary d.c. excitation, the well-known magnetic frequency doublers and triplers can be arranged. The theory of these is developed, assuming a cubic relation between flux and field intensity. The emf. in the secondary, the effect of supplementary d.c. excitation, the primary current and phase, and the secondary current for the un-loa... View full abstract»

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  • Some Characteristics of the Frequency Doubler as Applied to Radio Transmission

    Publication Year: 1920, Page(s):493 - 508
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2480 KB)

    A general analysis is given of the theory of the ferromagnetic frequency doubler. The production of secondary circuit energy is secured either by the induction of a sinusoidal secondary emf. or by the production of a sharply peaked, "impulsive" secondary emf. In each case, secondary resonance is employed to emphasize the desired double frequency. The sinusoidal wave and impulsive wave systems are ... View full abstract»

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  • The Status of the Static Frequency Doubler in Radio Engineering Practice

    Publication Year: 1920, Page(s):509 - 524
    Cited by:  Papers (1)
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    The system of sustained wave generation based on the use of a radio or high audio frequency alternator and frequency multipliers is considered. The mathematical expressions for the secondary voltages of the unloaded ferromagnetic doubler of the polarized core type are derived and explained. View full abstract»

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  • Theory of Antenna Radiation

    Publication Year: 1920, Page(s):525 - 540
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    After considering the previous investigations of antenna radiation, the author attacks this problem taking into account the sinusoidal distribution of current and voltage along the antenna. The vertical grounded antenna only is considered. A detailed mathematical investigation of radiation and field strengths at remote points follows. Formulas resembling the Eccles radiation formula, and the Cohen... View full abstract»

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Aims & Scope

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

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