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Radio and Electronic Engineer

Issue 10 • Date October 1973

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Displaying Results 1 - 8 of 8
  • The next stage in television

    Publication Year: 1973, Page(s):597 - 598
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (152 KB)

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  • Data compression techniques as a means of reducing the storage requirements for satellite data: a quantitative comparison

    Publication Year: 1973, Page(s):599 - 608
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1223 KB)

    This paper reports on an investigation into the application of data compression techniques as a means of reducing the `on-ground¿ data storage requirements that are associated with many space research programmes. The paper presents and compares quantitatively various compression techniques based on the Shannon-Fano, `run-length¿ and Hadamard transformation methods of source encoding. The compres... View full abstract»

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  • Non-linear resistors

    Publication Year: 1973, Page(s):609 - 612
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (526 KB)

    Non-linear resistors have been known since the early 19th century but have been of commercial significance only over the last 50 years. Today over 700 million pieces are manufactured annually. This paper outlines the three major types commonly found in the electronics industry, namely, negative and positive temperature coefficient thermistors, and voltage-dependent resistors. The electrical proper... View full abstract»

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  • The choice of data transmission system for efficient use of transmitter power

    Publication Year: 1973, Page(s):613 - 621
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1115 KB)

    The relationship between system error probability and transmitter power is investigated for block and convolutional codes operating in conjunction with binary phase-reversal keying. The following assumptions are made: (i) all systems accept the same data rate, (ii) a very large bandwidth expansion is not acceptable, (iii) the channel is disturbed by white Gaussian noise, (iv) a matched filter rece... View full abstract»

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  • Noise and dynamic range in lossy delay lines with compensation amplification

    Publication Year: 1973, Page(s):622 - 624
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (317 KB)

    It is shown that if the loss in a delay line is compensated by amplifying, the dynamic range of the system is maximized by amplifying continuously along the delay line so that the signal strength remains constant. This principle is particularly applicable to microsound delay lines and delay equalizers. Moreover, if the noise figure of the amplifier is sufficiently small,the dynamic range may be gr... View full abstract»

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  • Linear microwave amplification using impatt diodes

    Publication Year: 1973, Page(s):625 - 630
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (688 KB)

    Impatt diode amplifiers are candidates for use in super high frequency (s.h.f.) systems as broadband,intermediate power amplifiers, but their poor linearity makes them unattractive for some systems.The linearity of some X¿band impatt diode amplifiers is considered in this paper. The amplifiers are of the circulator coupled, reflexion type, where p +nn + silicon diodes of various doping levels are... View full abstract»

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  • Synthesis of wideband cascaded double-pole crystal lattice filters

    Publication Year: 1973, Page(s):631 - 637
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (618 KB)

    A design procedure is given for crystal lattice filters with bandwidths for quartz of approximately 1 to 8% of the centre frequency; the method results in simple formulae in terms of the elements of a low-pass ladder whose order is a multiple of four. View full abstract»

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  • New books received

    Publication Year: 1973, Page(s):651 - 652
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1564 KB)

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