By Topic

Proceedings of the IRE

Issue 2 • Date Feb. 1948

Filter Results

Displaying Results 1 - 25 of 25
  • Table of contents

    Publication Year: 1948, Page(s): 177
    Request permission for commercial reuse | PDF file iconPDF (203 KB)
    Freely Available from IEEE
  • Reginald L. Smith-Rose, Vice-President, 1948

    Publication Year: 1948, Page(s): 178
    Request permission for commercial reuse | PDF file iconPDF (928 KB)
    Freely Available from IEEE
  • The Engineer's Role in Government

    Publication Year: 1948, Page(s): 179
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (168 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Visibility of Small Echoes on Radar PPI Displays

    Publication Year: 1948, Page(s):180 - 196
    Cited by:  Papers (5)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3592 KB)

    A theory of visibility on an intensity-modulated display is developed. From it is derived a mathematical formula for visibility on a PPI display, and this formula is confirmed by experimental investigations. It is shown that, under favorable conditions, received signals whose power is 15 db below noise level can be observed. Replacement of a linear detector in the receiver by a square-law detector... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Results of Microwave Propagation Tests on a 40-Mile Overland Path

    Publication Year: 1948, Page(s):197 - 205
    Cited by:  Papers (14)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2064 KB)

    This paper gives the results of a series of microwave radio propagation tests over an unobstructed 40-mile overland path. The purpose of the tests was to investigate the transmission characteristics of such a path at centimeter wavelengths over a long period of time. Statistics on the transmission results at wavelengths ranging from 1.25 to 42 cm. are given. The tests extended over a period of abo... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Wavelength Lenses

    Publication Year: 1948, Page(s):206 - 212
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1176 KB)

    The operation of a polyrod antenna can be considered as that of a lens having cross-section dimensions of the order of a wavelength. The sides of this lens are shown to be responsible for the concentration of energy, and this gathering action continues with increasing length up to a point where the energy inside the lens traveling slower than light falls out of phase with the external energy. The ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Method of Determining and Monitoring Power and Impedance at High Frequencies

    Publication Year: 1948, Page(s):212 - 216
    Cited by:  Papers (2)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2496 KB)

    A method and newly developed devices for determining and monitoring power and impedance levels in transmission lines at high frequencies are explained. Practical considerations influencing accurate determination of power and impedance levels are analyzed, and the previous and newly developed methods of monitoring these important quantities under changing conditions of load are compared. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Resistor-Transmission-Line Circuits

    Publication Year: 1948, Page(s):217 - 220
    Cited by:  Papers (178)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (656 KB)

    Necessary and sufficient conditions are derived for a function to be the driving-point impedance of a physically realizable network consisting (essentially) of lumped resistors and lossless transmission lines. The circuits so developed are thoroughly practical for pure reactances and in many other special cases, but, in general, ideal transformers are sometimes required. A rigorous correspondence ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Currents Excited on a Conducting Plane by a Parallel Dipole

    Publication Year: 1948, Page(s):221 - 229
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (4032 KB)

    An analysis is made of the distribution of magnetic field and of current on the plane surface of a perfectly conducting infinite sheet due to a driven half-wave dipole parallel to the sheet. The analysis is based upon the following assumptions: (a) the axial distribution of the amplitude of the current in the dipole is cosinusoidal with respect to the midpoint; (b) the relative phase of the curren... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Experimental Determination of Helical-Wave Properties

    Publication Year: 1948, Page(s):230 - 233
    Cited by:  Papers (9)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (752 KB)

    The properties of the wave propagated along a helix used in the traveling-wave amplifier are discussed. A description is given of measurements of field strength on the axis, field distribution around the helix, and the velocity of propagation. It is concluded that the actual field in the helix described is slightly weaker than would be predicted from the relations presented by J. R. Pierce for a h... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Tunable Vacuum-Contained Triode Oscillator for Pulse Service

    Publication Year: 1948, Page(s):234 - 239
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2712 KB)

    A tunable push-pull triode oscillator is described in which the vacuum-tube components and the entire r.f. portion of the oscillator circuit are contained in an evacuated metallic envelope. A terminal is provided for coaxial output into a 50-ohm transmission line. The oscillator was developed for the frequency range of 390 to 435 Mc. and is tunable by mechanical means continuously through this ran... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Correspondence

    Publication Year: 1948, Page(s): 239
    Request permission for commercial reuse | PDF file iconPDF (184 KB)
    Freely Available from IEEE
  • Discussion on "Generalized Theory of Multitone Amplitude and Frequency Modulation" (Lawrence J. Giacoletto)

    Publication Year: 1948, Page(s):240 - 243
    Request permission for commercial reuse | PDF file iconPDF (472 KB)
    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Contributors to the Proceedings of the I.R.E.

    Publication Year: 1948, Page(s):244 - 245
    Request permission for commercial reuse | PDF file iconPDF (2121 KB)
    Freely Available from IEEE
  • Institute news and radio notes

    Publication Year: 1948, Page(s):246 - 253
    Request permission for commercial reuse | PDF file iconPDF (4692 KB)
    Freely Available from IEEE
  • Books

    Publication Year: 1948, Page(s):254 - 255
    Request permission for commercial reuse | PDF file iconPDF (552 KB)
    Freely Available from IEEE
  • The National Physical Laboratory, Teddington, Middlesex, England

    Publication Year: 1948, Page(s): 256
    Request permission for commercial reuse | PDF file iconPDF (1328 KB)
    Freely Available from IEEE
  • J. W. McRae

    Publication Year: 1948, Page(s): 257
    Request permission for commercial reuse | PDF file iconPDF (904 KB)
    Freely Available from IEEE
  • Developments in Radio Sky-Wave Propagation Research and Applications during the War

    Publication Year: 1948, Page(s):258 - 266
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (1912 KB)

    This paper discusses the work done by the Interservice Radio Propagation Laboratory during World War II. The circumstances leading to the establishment of IRPL are described and the problems which are faced are stated. The measures taken in the solutions of these problems are outlined, and some of the results are presented. Specific services performed by IRPL during the war for the armed forces an... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Alternating-Current Measurements of Magnetic Properties

    Publication Year: 1948, Page(s):266 - 277
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2248 KB)

    Herein is presented a critical analysis of various procedures for determining the permeability and core loss of ferromagnetic materials, together with a discussion of the limitations under which such observations are made and the interpretations which should be applied to the data obtained. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The Degenerative Positive-Bias Multivibrator

    Publication Year: 1948, Page(s):277 - 280
    Cited by:  Papers (3)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (712 KB)

    The operation of a multivibrator with positive grid supply and cathode degeneration is described. It is shown that, for suitable circuit parameters, the frequency of the multivibrator is very nearly a linear function of the applied grid voltage. Since the grid voltage can be controlled with relatively simple auxiliary circuits, the positive-bias multivibrator becomes a useful variable-frequency so... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A Variable-Radio-Frequency-Follower System

    Publication Year: 1948, Page(s):281 - 285
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (3336 KB)

    This paper deals with a new follow-up or servo system for amplification of mechanical forces and remote positioning. The system described makes use of variable radio frequencies representative of the respective positions of system leader and follower. Two parallel-resonant circuits are provided, one of which is the frequency-determining circuit of an oscillator, while the other is the balance-freq... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • New Techniques in Glass-to-Metal Sealing

    Publication Year: 1948, Page(s):286 - 289
    Cited by:  Papers (1)
    Request permission for commercial reuse | Click to expandAbstract | PDF file iconPDF (2992 KB)

    The new techniques in glass-to-metal sealing described in the paper include accurate and controlled oxidation of the metal, and the powder-glassing method of making seals. The accompanying experimental data refer to Kovar, since most of the laboratory work has been on glass-to-Kovar seals. Data are presented for Kovar oxidized at a number of controlled temperatures and varying times. Excellent adh... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Contributors to Waves and Electrons Section

    Publication Year: 1948, Page(s):289 - 290
    Request permission for commercial reuse | PDF file iconPDF (1926 KB)
    Freely Available from IEEE
  • Abstracts and references

    Publication Year: 1948, Page(s):291 - 304
    Request permission for commercial reuse | PDF file iconPDF (4434 KB)
    Full text access may be available. Click article title to sign in or learn about subscription options.

Aims & Scope

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

Full Aims & Scope