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Proceedings of the IRE

Issue 12 • Dec. 1947

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Displaying Results 1 - 25 of 34
  • Table of contents

    Publication Year: 1947, Page(s):1401 - 1402
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  • Dorman D. Israel

    Publication Year: 1947, Page(s): 1403
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  • Audio Aspects of Postwar Radio Engineering

    Publication Year: 1947, Page(s): 1404
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    First Page of the Article
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  • Frequency Stabilization of Microwave Oscillators

    Publication Year: 1947, Page(s):1405 - 1415
    Cited by:  Papers (29)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2368 KB)

    Two electronic circuits for frequency stabilization of electronically tunable microwave oscillators are described and discussed. One of these uses a microwave circuit equivalent to the lowfrequency discriminator, in conjunction with a d.c. amplifier, to control the oscillator frequency at the frequency of a cavity resonator. The other circuit obtains frequency control of the oscillator by the cavi... View full abstract»

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  • Synchronization of Oscillators

    Publication Year: 1947, Page(s):1415 - 1423
    Cited by:  Papers (52)  |  Patents (3)
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    A theory is presented which predicts the behavior of any self-limiting oscillator in the presence of an injected sinusoidal voltage or current of small but constant magnitude. The internal mechanism responsible for synchronization is not needed, and the theory is thus applicable to any source of alternating current. Experimental verification of the theory is presented for the case of a low-power H... View full abstract»

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  • Reflex Oscillators for Radar Systems

    Publication Year: 1947, Page(s):1424 - 1435
    Cited by:  Papers (2)
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    The advantages to be gained in the operation of radar systems at very high frequencies have led to the use of frequencies of several thousand megacycles. Operation at these frequencies has imposed serious problems in obtaining suitable tube behavior. Because of the difficulty in obtaining amplification at the transmission frequency, the r.f. section of the usual radar receiver consists of a crysta... View full abstract»

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  • The Distortion of Frequency-Modulated Waves by Transmission Networks

    Publication Year: 1947, Page(s):1436 - 1445
    Cited by:  Papers (9)
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    A general solution to the problem of calculating the distortion imposed on the instantaneous frequency of a frequency-modulated wave in passing through a transmission network is obtained by a direct operational method. Approximate formulas for the cases of large and small deviation ratios are derived, and it is shown that a range of overlap exists in practical cases. For very large deviation ratio... View full abstract»

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  • A Study of Tropospheric Reception at 42.8 Mc. and Meteorological Conditions

    Publication Year: 1947, Page(s):1445 - 1450
    Cited by:  Papers (6)
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    From February, 1945, during its hours of operation, station W2XMN at Alpine, N.J., has been recorded at Needham, Mass., at a distance of 167 miles. W2XMN operates on a frequency of 42.8 Mc., at a power of 50 kw., and its daily schedule is from 1600 to 2300, E.D.S.T. in summer and E.S.T. in winter. Analysis of the Alpine recording has shown that no part of the ionosphere is involved in the transmis... View full abstract»

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  • Measurement of Aircraft-Antenna Patterns Using Models

    Publication Year: 1947, Page(s):1451 - 1462
    Cited by:  Papers (25)  |  Patents (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (6208 KB)

    Methods of measuring the patterns of airborne antennas using models have been investigated. The conditions which have to be satisfied in a model for accurate simulation are well known. However, in a practical model it is generally impossible to satisfy these conditions exactly, so it is necessary to consider the approximations which are permissible. Methods for measuring directly the patterns of t... View full abstract»

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  • Microwave Antenna Measurements

    Publication Year: 1947, Page(s):1462 - 1471
    Cited by:  Papers (22)
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    A description is given of the techniques involved in measuring the properties of microwave antennas. The measuring methods which are peculiar to these frequencies are discussed, and include the measurement of gain, beam width, minor lobes, wideangle radiation, mutual coupling between antennas, phase, and polarization. The requirements of the antenna testing site are taken up, and components of a c... View full abstract»

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  • Slot Antennas

    Publication Year: 1947, Page(s):1472 - 1479
    Cited by:  Papers (1)
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    The development of flush-type radiators of the slot and pocket type is described. Special emphasis is given to types applicable to aircraft. Specific solutions to altimeter and marker beacon pickup antennas are described. Reference to application in other fields is also made. The general aspects of the phenomena which are involved are examined, and it becomes evident that workable solutions, in th... View full abstract»

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  • Fundamental Limitations of Small Antennas

    Publication Year: 1947, Page(s):1479 - 1484
    Cited by:  Papers (460)  |  Patents (43)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1408 KB)

    A capacitor or inductor operating as a small antenna is theoretically capable of intercepting a certain amount of power, independent of its size, on the assumption of tuning without circuit loss. The practical efficiency relative to this ideal is limited by the "radiation power factor" of the antenna as compared with the power factor and bandwidth of the antenna tuning. The radiation power factor ... View full abstract»

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  • A Helical Antenna for Circular Polarization

    Publication Year: 1947, Page(s):1484 - 1488
    Cited by:  Papers (56)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1104 KB)

    A helical coil radiates a wave of circular polarization in a doughnut pattern if the area and pitch of the turns are properly related to the radianlength of the wave. For a coil whose dimensions are less than the radianlength, circular polarization requires that the area A of each turn and the pitch p be related to the radianlength l as follows: A=pl. The simplest form of helical antenna is a self... View full abstract»

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  • An Adjustable Wave-Guide Phase Changer

    Publication Year: 1947, Page(s):1489 - 1498
    Cited by:  Papers (69)  |  Patents (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2152 KB)

    A very interesting and useful component of the waveguide art is the differential phase-shift section, wherein dominant waves of one polarization are caused to travel through a section of wave guide at a different velocity than waves polarized at right angles to the first. Particularly useful are the Δ90-degree and Δ180-degree differential phase-shift sections which produce differential d... View full abstract»

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  • Plane Discontinuities in Coaxial Lines

    Publication Year: 1947, Page(s):1498 - 1502
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (920 KB)

    The present paper establishes the equivalent circuit of a plane discontinuity in a coaxial line as a simple shunt capacitance. This capacitance is calculated for concentric changes of cross-section and concentric disks. In order to utilize the results of the analogous discontinuities in parallel-plate guides, "equivalent radii" are asymptotically calculated; and the results are sufficiently accura... View full abstract»

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  • The Inverse Nyquist Plane in Servomechanism Theory

    Publication Year: 1947, Page(s):1503 - 1504
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (384 KB)

    The application of an inverse Nyquist diagram to the study of servomechanism performance is discussed. The use of the inverse plane has some advantages over the customary procedure. It is shown that system stability may be studied in a manner analogous to the conventional Nyquist method. The system frequency response and the effect of system parameters upon performance may be determined by simple ... View full abstract»

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  • Discussion on "Factors Affecting the Accuracy of Radio Noise Meters" (Harold E. Dinger and Harold G. Paine)

    Publication Year: 1947, Page(s):1505 - 1507
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  • Discussion on "Exact Design and Analysis of Double- and Triple-Tuned Band-Pass Amplifiers" (Milton Dishal)

    Publication Year: 1947, Page(s):1507 - 1510
    Cited by:  Papers (1)
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  • Discussion on "The Cathode-Coupled Amplifier" (Keats A. Pullen, Jr.)

    Publication Year: 1947, Page(s):1510 - 1514
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  • Contributors to Proceedings of the I.R.E.

    Publication Year: 1947, Page(s):1514 - 1517
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  • Correspondence

    Publication Year: 1947, Page(s): 1518
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  • Institute news and radio notes

    Publication Year: 1947, Page(s):1519 - 1527
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  • Books

    Publication Year: 1947, Page(s):1528 - 1529
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  • RCA Laboratories, Research Headquarters

    Publication Year: 1947, Page(s): 1530
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  • Officers: Dallas-Ft. Worth Section

    Publication Year: 1947, Page(s): 1531
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Aims & Scope

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

Full Aims & Scope