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Radio and Electronic Engineer

Issue 3 • Date September 1970

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Displaying Results 1 - 7 of 7
  • Harmonized system for quality control

    Publication Year: 1970
    Save to Project icon | PDF file iconPDF (130 KB)  
    Freely Available from IEEE
  • Adaptive detection of distorted digital signals

    Publication Year: 1970 , Page(s): 107 - 119
    Cited by:  Papers (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1505 KB)  

    The paper describes a novel approach to the adaptive equalization of a channel, leading to an adaptive detector which promises to achieve in some applications a better performance over a slowly time-varying channel, for a given degree of equipment complexity, than is possible with the more conventional transversal-filter adaptive equalizer. The transmitted signal contains a serial stream of binary... View full abstract»

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  • Transmission factors of microwave filters with prescribed attenuation and group delay

    Publication Year: 1970 , Page(s): 121 - 131
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1231 KB)  

    Synthesis procedure is presented for determining transmission factors of a broad class of microwave filters using commensurate line lengths which satisfy prescribed attenuation and group delay characteristics. This technique, which lends itself to automatic programming, derives its origin from a previously described method of increasing selectivity in linear phase microwave filters and depends on ... View full abstract»

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  • Standard L.F. noise sources using digital techniques and their application to the measurement of noise spectra

    Publication Year: 1970 , Page(s): 132 - 136
    Cited by:  Papers (3)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (567 KB)  

    Circuits of a random noise source and a pseudo-random noise source, both using digital techniques, are described and an account is given of their auto-correlation functions and power spectra. Their value as standard signal sources in noise power measurements is discussed and conclusions are reached about their relative merits. View full abstract»

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  • Pulse counting and encoding systems used on a rocket-borne spectrophotometer

    Publication Year: 1970 , Page(s): 137 - 143
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1134 KB)  

    Problems encountered making photoelectric observations of stars from spinning rockets have been solved by using photon pulse counting. The counter states were suitably encoded so as to permit the transmission of all useful data within the limits of two analogue telemetry channels of restricted bandwidth. The logic system is described and resulting data shown. View full abstract»

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  • High accuracy digital linearization of frequency signals of transducers

    Publication Year: 1970 , Page(s): 145 - 150
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (650 KB)  

    The signals from transducers having non-linear frequency output have to be linearized by a signal converter. The paper describes first some accepted linearizing method and afterwards the digital linearizer developed in the Central Measurement Research Laboratory, Hungary, will be discussed. The DENsrroN electronic units connected to the frequency output density transducer correct digitally the err... View full abstract»

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  • A Laguerre series approximation to the ideal Gaussian filter

    Publication Year: 1970 , Page(s): 151 - 155
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (366 KB)  

    It is shown that the ideal Gaussian frequency response can be more accurately approximated by using a Laguerre series approach instead of a Taylor series approach involving the same number of components. The resulting filters are physically realizable and their responses compare favourably with those of the conventional approximations to Gaussian filters. View full abstract»

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