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Proceedings of the IRE

Issue 10 • Date Oct. 1948

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Displaying Results 1 - 25 of 29
  • Table of contents

    Publication Year: 1948, Page(s): 1193
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  • John A. Hutcheson, Director, 1947-1948

    Publication Year: 1948, Page(s): 1194
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  • The Dilemma of Specialization

    Publication Year: 1948, Page(s): 1195
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  • Communication by Means of Reflected Power

    Publication Year: 1948, Page(s):1196 - 1204
    Cited by:  Papers (169)  |  Patents (4)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4624 KB)

    Point-to-point communication, with the carrier power generated at the receiving end and the transmitter replaced by a modulated reflector, represents a transmission system which possesses new and different characteristics. Radio, light, or sound waves (essentially microwaves, infrared, and ultrasonic waves) may be used for the transmission under approximate conditions of specular reflection. The b... View full abstract»

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  • Some Notes on Noise Figures

    Publication Year: 1948, Page(s):1205 - 1214
    Cited by:  Papers (8)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1888 KB)

    The subject matter of this paper first appeared in the form of laboratory reports. Outside interest in these reports prompted the preparation of the material for publication. Despite the attention given to noise and noise figures in the literature, the basic concepts are still little understood by the average engineer. This paper takes up the basic ideas and definitions proposed by H. T. Friis and... View full abstract»

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  • Cosmic Static

    Publication Year: 1948, Page(s):1215 - 1218
    Cited by:  Papers (6)
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    A brief description of the apparatus is given. The results of a survey of the galaxy made at a frequency of 480 Mc are compared to a previous survey made at 160 Mc. The principal new findings are a projection from Sagittarius in the direction of the north galactic pole; a supplementary small rise in Aquila; and a splitting of the maxima in Cygnus and Orion each into two parts. View full abstract»

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  • Comparison of Calculated and Measured Phase Difference at 3.2 Centimeters Wavelength

    Publication Year: 1948, Page(s):1218 - 1223
    Cited by:  Papers (6)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (944 KB)

    Radio propagation and associated meteorological measurements, made by the Electrical Engineering Research Laboratory of the University of Texas during April, 1946, on a path from Gila Bend to Sentinel in the Arizona desert, show that, for meteorological conditions that could be represented by a linear M curve, the magnitude and phase of the field resulting from propagation over a 27-mile path on 3... View full abstract»

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  • The Chemistry of High-Speed Electrolytic Facsimile Recording

    Publication Year: 1948, Page(s):1224 - 1235
    Cited by:  Papers (1)
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    A brief survey is made of the various electrolytic recording processes which have found use in facsimile. The requirements and conditions necessary for recording at higher speeds are discussed, with emphasis on the mechanism which has produced the most promising high-speed recording processes. Three general types of azo-color reactions which have proved most satisfactory at the higher recording sp... View full abstract»

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  • Helical Beam Antennas for Wide-Band Applications

    Publication Year: 1948, Page(s):1236 - 1242
    Cited by:  Papers (23)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2336 KB)

    The helical beam antenna has inherent broad-band properties. Over a wide frequency band the pattern shape, circularity of polarization, and terminal impedance are relatively stable. Measured performance data are presented for a medium-gain helical beam antenna of optimum dimensions with a bandwidth of about 1.7 to 1. A high-gain broadside array of four such helices is described. Other wide-band ap... View full abstract»

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  • Antenna Design for Television and FM Reception

    Publication Year: 1948, Page(s):1242 - 1248
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1976 KB)

    An approximate method is presented herein of determining, for preliminary design, the resistance and reactance variation with frequency of an antenna or dipole with change of physical dimensions, and to indicate the essential requirements for good performance over a wide band of frequencies necessary for efficient reception of all television channels and FM bands as now allocated for public use by... View full abstract»

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  • A Method of Measuring the Field Strength of High-Frequency Electromagnetic Fields

    Publication Year: 1948, Page(s):1249 - 1251
    Cited by:  Papers (1)
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    An analysis of a case of an electron beam directed parallel to a uniform steady magnetic field with a high-frequency electromagnetic field at right angles to the magnetic field results in a relation among the variables which is particularly simple, if the magnetic field is adjusted so that ess/ mc ωco wherωco is the frequency of the electromagnetic field (Gaussian units). One ... View full abstract»

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  • Mode Separation in Oscillators with Two Coaxial-Line Resonators

    Publication Year: 1948, Page(s):1252 - 1255
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (776 KB)

    The resonance frequencies of a capacitance-terminated coaxial-line resonator may readily be determined graphically. The graphical analysis shows clearly why separation of the various modes of resonance is possible in oscillators using two resonators. Mode separation is favored by the use of resonators that have a large difference in their products of characteristic impedance and terminating capaci... View full abstract»

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  • Discussion on "Reflection of Very-High-Frequency Radio Waves from Meteoric Ionization" (Edward W. Allen, Jr.)

    Publication Year: 1948, Page(s):1255 - 1257
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  • Discussion on "The Distortion of Frequency-Modulated Waves by Transmission Networks" (A. S. Gladwin)

    Publication Year: 1948, Page(s):1257 - 1259
    Cited by:  Papers (1)
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  • Contributors to Proceedings of the I.R.E.

    Publication Year: 1948, Page(s):1259 - 1260
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  • Correspondence

    Publication Year: 1948, Page(s):1261 - 1262
    Cited by:  Papers (3)
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  • Institute news and radio notes

    Publication Year: 1948, Page(s):1263 - 1320
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  • Books

    Publication Year: 1948, Page(s):1269 - 1273
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  • Sections

    Publication Year: 1948, Page(s):1270 - 1271
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  • IRE People

    Publication Year: 1948, Page(s):1274 - 1275
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  • William A. Edson, Chairman, Atlanta Section, 1948-1949 and William H. Carter, Jr. Chairman, Houston Section, 1948-1949

    Publication Year: 1948, Page(s): 1276
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  • Nuclear Reactions and Nuclear Energy

    Publication Year: 1948, Page(s):1277 - 1282
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  • Wide-Deviation Frequency-Modulated Oscillators

    Publication Year: 1948, Page(s):1282 - 1284
    Cited by:  Papers (2)
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    Instantaneous frequency and power relations in wide-deviation frequency-modulated oscillators are discussed with special reference to the oscillators used in particle accelerators. There are no fundamental limitations on deviation and modulating frequency in the present range of interest, but a fluctuating load effect arises which may be of importance. View full abstract»

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  • Frequency Measurement by Sliding Harmonics

    Publication Year: 1948, Page(s):1285 - 1288
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    A method of measuring radio frequencies is described which uses an interpolating, or adjustable, frequency standard. Harmonics of this standard are caused to slide along the frequency scale until the one next below the frequency under measurement is brought up to match that frequency. The number of the used harmonic is readily determined from a simple calibration of the detector, heterodyne freque... View full abstract»

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  • Calculation of Doubly Curved Reflectors for Shaped Beams

    Publication Year: 1948, Page(s):1289 - 1296
    Cited by:  Papers (20)  |  Patents (1)
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    A method based upon conservation of energy and the simple laws of geometrical optics is described for the calculation of double-curvature surfaces to produce from a point source a shaped beam of arbitrary shape in one plane and uniformly narrow in the perpendicular planes. A specific application of the shaped-beam antenna is in connection with radar antennas for airborne navigational systems, for ... View full abstract»

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Aims & Scope

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

Full Aims & Scope