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Radio and Electronic Engineer

Issue 5 • May 1968

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Displaying Results 1 - 9 of 9
  • The Commercial Engineer

    Publication Year: 1968
    IEEE is not the copyright holder of this material | PDF file iconPDF (111 KB)
    Freely Available from IEEE
  • Institution Notices

    Publication Year: 1968
    IEEE is not the copyright holder of this material | PDF file iconPDF (129 KB)
    Freely Available from IEEE
  • Computer aided layout of microcircuits

    Publication Year: 1968, Page(s):251 - 261
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1040 KB)

    To eliminate some of the skilled human effort in arranging the layout of the components of a microcircuit on a substrate, it is proposed that the process should be aided by a digital computer. A fully automated system does not seem possible at present. The method which has been suggested, and partially developed relies on the automatic production of a rough layout which is unconstrained in size. T... View full abstract»

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  • A thin film, cold cathode, alpha-numeric display panel

    Publication Year: 1968, Page(s):265 - 272
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1453 KB)

    A vacuum-deposited thin film metal-insulator-metal (Al-SiO-Au) device, after an electro-forming process, emits hot electrons,and constitutes a cold cathode. An array of 25 of these Al-SiO-Au cold cathodes, each of approximately 0.1 cm2 area, is used with a phosphor screen in an alpha-numeric display panel, which is clearly visible under normal laboratory lighting conditions. The normal cathode bia... View full abstract»

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  • A theoretical analysis of the ideal step-recovery diode in the series-mode of operation

    Publication Year: 1968, Page(s):273 - 280
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (673 KB)

    An analysis is given of frequency multiplication with the ideal step-recovery diode in the series-mode of operation. Only one conduction angle per period of the fundamental frequency is allowed. The series resistance of the diode is assumed to be different from zero. General and explicit formulae are given for the input impedance, the output power and the power efficiency. The validity of the appr... View full abstract»

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  • F.M. deviation measurements

    Publication Year: 1968, Page(s):281 - 293
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1260 KB)

    The technique used for a frequency modulation measurement depends upon various factors such as the value of modulation index and frequency deviation. Even with the same set of variables more than one method of measurement may be available and the choice of method is decided as much by its ease of application as by its inherent accuracy.Some of the more commonly used methods of frequency modulation... View full abstract»

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  • An extension of the use of karnaugh maps in the minimization of logical functions

    Publication Year: 1968, Page(s):294 - 296
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (265 KB)

    Karnaugh maps are used as a graphical technique for minimizinglogical functions. They are usually employed where there are up to four literals, or with some difficulty for a maximum of six literals. It is proposed that the use of these maps can be extended to eight literals by arranging that each cell of the map be divided to form a subsidiary Karnaugh map. View full abstract»

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  • A 5-MHz switching multivibrator using a complementary pair of transistors

    Publication Year: 1968, Page(s):297 - 305
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1711 KB)

    The principle of operation of a novel free-running transistor multivibrator is presented. The circuit is based on the application of a complementary switch, the operation of which is controlled by a single timing network. This circuit provides a suitable means of generating rectangular pulses having rise- and fall-times in the nanosecond range.The circuit exhibits some other useful features which ... View full abstract»

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  • The use of noise measurements in radar receiver analysis

    Publication Year: 1968, Page(s):306 - 312
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1581 KB)

    The characteristics of band-limited random noise are employed to measure the signal transmission properties of non-coherent pulse radar receiving systems used for evaluating back-scatter signals from the ground,sea and precipitation clutter targets. a scheme using a calibrated microwave noise generator source and amplitude distribution and spectrum analysing equipment is employed, as both clutter ... View full abstract»

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