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Proceedings of the IRE

Issue 3 • Date March 1960

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Displaying Results 1 - 24 of 24
  • Poles and Zeros

    Page(s): 289
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  • Haraden Pratt, Winner of the IRE Founders Award

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  • Harry Nyquist, Winner of the IRE Medal of Honor

    Page(s): 291
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  • Scanning the issue

    Page(s): 292
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  • Design Considerations for Integrated Electronic Devices

    Page(s): 293 - 300
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    Some fundamental factors affecting the design of integrated electronic devices are discussed, particularly the influence of shrinkage. It is concluded that the considerable advantages of integrated devices, compared to conventional devices, such as very small volume and weight, and reduced number of metallic connections, have to be paid for by higher shrinkage in fabrication. Three considerations are advanced, which will reduce partially this higher shrinkage. First, the resulting increase in cost may be made very small if the design of the integrated device allows the extent of integration to be adjusted to the shrinkage rate. Second, the resultant high cost of the integrated device justifies a higher investment in the fabrication process of the integrated devices than for the individual units. Third, methods of doctoring integrated devices may be used to reduce the shrinkage effectively. View full abstract»

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  • Perceptron Simulation Experiments

    Page(s): 301 - 309
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    An experimental simulation program, which has been in progress at the Cornell Aeronautical Laboratory since 1957, is described. This program uses the IBM 704 computer to simulate perceptual learning, recognition, and spontaneous classification of visual stimuli in the perceptron, a theoretical brain model which has been described elsewhere. The paper includes a brief review of the organization of simple perceptrons, and theoretically predicted performance curves are compared with those obtained from the simulation programs, in several types of experiments, designed to study "forced" and "spontaneous" learning of pattern discriminations. View full abstract»

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  • Pulse Compression-Key to More Efficient Radar Transmission

    Page(s): 310 - 316
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    Increased demand for greater detection ranges in radar systems is often thwarted by the transmitting tube peak power limitation which, for narrow pulse operation, is usually reached before the full average power capability of the tube is realized. The technique of pulse compression offers a means of increasing the average power available to illuminate radar targets without any loss at the receiver of the resolution needed for the tactical requirements of the system. This is accomplished by transmitting a wide pulse in which the carrier is frequency modulated and then, by proper signal processing methods, causing a time compression of the received signal to a much narrower pulse of high effective peak power. The spectra and time functions of a particular class of pulse compression signals are analyzed and the basis for compression filter design is derived. Test waveforms demonstrate the resolving capability of the pulse compression technique. View full abstract»

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  • Correction

    Page(s): 316
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  • Field Effect on Silicon Transistors

    Page(s): 317 - 320
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    A field effect has been observed on an operating silicon transistor. The results have been interpreted as being due to changes in surface recombination velocity produced by changes in surface potential. Using this approach, it was possible to calculate the surface recombination velocity of the base region of an operating device directly, without having to go to a filament measuring technique and then extrapolating back to the device. Relaxation phenomena have also been observed which can be interpreted as being due to a transfer of charge between the fast and the slow states at the surface. Time constants for this transition have been calculated. View full abstract»

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  • A Half-Watt CW Traveling-Wave Amplifier for the 5-6 Millimeter Band

    Page(s): 321 - 328
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    The traveling-wave tube here described represents the first practical CW power amplifier with broadband performance in the millimeter wave band. More than 30 db of gain has been achieved over a bandwidth of 10,000 mc centered at 55,000 mc. A maximum CW output power of ¿ watt has been obtained in this band. This combination of high power output and broadband performance represents a significant advance in the millimeter art. The electrical and mechanical techniques are described which were found successful in solving the problems peculiar to the high operating frequency. These problems are focusing, heat dissipation, intrinsic RF loss and structural precision. Experimental data on an operating tube are presented which show good agreement with predicted performance. These data suggest that the techniques described may be extended to allow either an increase in power to several watts at the present operating frequency or an increase in operating frequency to 150 kmc for output powers of a hundred milliwatts. View full abstract»

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  • Correction

    Page(s): 328
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  • The Propagation of Radio Waves of Frequency Less than 1 kc

    Page(s): 329 - 331
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    The simplified mode theory of propagation in a waveguide formed by the earth and a concentric ionosphere of constant height is applied to the experimental observations of Chapman and Macario for the frequency range between 100 cps and 1000 cps. It is demonstrated that the discrepancies between the theory and the nighttime experimental results may be explained by modifying the theory and postulating an effective increase in the ionospheric height as the frequency decreases. This concept is also shown to be not necessarily incompatible with the results for day. View full abstract»

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  • Maximum Stable Collector Voltage for Junction Transistors

    Page(s): 332 - 340
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    A study is made of the conditions for stability of junction transistors operating in the pre-avalanche breakdown region in order to establish on quantitative grounds the maximum collector voltage that can be applied to the transistor for stable operation. A method is shown by which this peak voltage can be calculated from a knowledge of the circuit configuration, mode of emitter bias, rate of heat generation, and ambient temperature. View full abstract»

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  • Ionospheric Models as an Aid for the Calculation of Ionospheric Propagation Quantities

    Page(s): 341 - 346
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    This paper is a continuation of a study announced in a previous paper by the author [1]. Results are given in the form of curves, and a comparison is made with ionograms. The important influence of radiation angle on the MUF (maximum usable frequency) is shown. A large enough number of adequate models (60 to 100) might be valuable to the radio engineer for prediction and design purposes. View full abstract»

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  • Electromagnetic Properties of High-Temperature Air

    Page(s): 347 - 356
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    This paper concerns the attenuation and phase characteristics of plasmas and, in particular, the electromagnetic properties of high-temperature air. It is shown that by a suitable normalization of the parameters the electromagnetic properties of plasmas may be universally represented in convenient form in either the complex dielectric coefficient plane or the complex propagation constant plane. Next, the electron number densities and electron collision frequencies for air ranging in temperature from 3000° to 12,000°K and in density from 101 to 10-4 times the density at sea level are illustrated. The attenuation and phase constants for an electromagnetic wave traversing this medium have been evaluated for frequencies from 109 to 1011 cps. As an example, the above universal representation is applied to the stagnation region of a hypersonic vehicle in space. View full abstract»

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  • Correspondence

    Page(s): 357 - 369
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  • Contributors

    Page(s): 370 - 371
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  • 1960 IRE International Convention Program

    Page(s): 372 - 408
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  • Books

    Page(s): 409 - 411
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  • Scanning the Transactions

    Page(s): 411 - 412
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  • Abstracts of IRE Transactions

    Page(s): 412 - 416
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    The issues of IRE Transactions listed herein have recently been published, and are now available from the Institute of Radio Engineers, Inc. The contents of each issue and, where available, abstracts of technical papers are given. View full abstract»

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  • Translations of Russian technical literature

    Page(s): 431
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    Listed is information on Russian technical literature in electronics and allied fields which is available in the US in the English language. Further inquiries should be directed to the sources listed. In addition, general information on translation programs in the US may be obtained from the Office of Science Information Service, National Science Foundation, Washington DC, USA and from the Office of Technical Services, US Department of Commerce, Washington DC, USA. View full abstract»

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  • Publications of the Office of Technical Services

    Page(s): 432
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Aims & Scope

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

Full Aims & Scope