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Radio and Electronic Engineer

Issue 7 • Date July 1974

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Displaying Results 1 - 10 of 10
  • Is a degree essential?

    Publication Year: 1974
    PDF file iconPDF (111 KB)  
    Freely Available from IEEE
  • Programmable surface acoustic wave devices utilizing hybrid microelectronic techniques

    Publication Year: 1974 , Page(s): 343 - 351
    Cited by:  Papers (3)
    Click to expandAbstract | PDF file iconPDF (1352 KB)  

    Programmable matched filters can be realized using surface acoustic wave propagation in conjunction with external microelectronic circuitry. Here two devices, a programmable analogue matched filter and a diode convolver, are discussed, highlighting the similarities in constructional technique. Specific device requirements include an r.f. circuit which for 10 MHz signal bandwidth must possess a 310... View full abstract»

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  • The electronics industry and higher education

    Publication Year: 1974 , Page(s): 352 - 354
    Click to expandAbstract | PDF file iconPDF (447 KB)  

    Organized by the IERE with the association of the IEE, this conference aimed to bridge the gap or interface between industry and higher education. It was held at the week-end and the programme allowed for considerable time for informal discussion between the two sides. It was perhaps unfortunate that the timing of the conference was only shortly after the winter fuel crisis and the end of the 3-da... View full abstract»

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  • A digital-analogue minimum detector for riometers

    Publication Year: 1974 , Page(s): 355 - 356
    Cited by:  Papers (1)
    Click to expandAbstract | PDF file iconPDF (150 KB)  

    A circuit using commercial integrated circuits has been developed to replace the minimum-detector circuitry commonly used in swept-frequency passive ionospheric absorption measurements. The new circuit offers good accuracy and is completely free of decay error. View full abstract»

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  • Binary transversal filters in data modems

    Publication Year: 1974 , Page(s): 357 - 362
    Click to expandAbstract | PDF file iconPDF (582 KB)  

    The design of a data modulator using binary transversal filters is described. The technique used can be applied to a number of modulation schemes and leads to data modulators which are very suitable for integration. A matched filter demodulator is also described. View full abstract»

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  • The application of suppressed carrier double sideband signals to group delay measurements

    Publication Year: 1974 , Page(s): 363 - 366
    Click to expandAbstract | PDF file iconPDF (454 KB)  

    A technique is described in which a suppressed carrier d.s.b. test signal is used to measure the variation in group delay within the baseband of a microwave video channel. The method is shown to be capable of avoiding errors caused both by differential sideband attenuation and by unwanted modulation components. A resolution of 5 ns has been achieved in the frequency range 0.5 to 10 MHz. View full abstract»

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  • Variational approach to V-dipole antenna analysis

    Publication Year: 1974 , Page(s): 367 - 372
    Click to expandAbstract | PDF file iconPDF (594 KB)  

    An analysis of the problem of symmetric, centre-driven V-antenna, using the variational method, is given. In deriving the variational expression for impedance the trial function in the form of a functional series with complex coefficients was assumed. The concerte evaluations were performed using two types of functional series: two-term trigonometric series and polynomials of arbitrary order. The ... View full abstract»

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  • Application of p.c.m. to broadcast quality video signals. Part 1: Subjective study of the coding parameters

    Publication Year: 1974 , Page(s): 373 - 381
    Cited by:  Papers (1)
    Click to expandAbstract | PDF file iconPDF (1144 KB)  

    This Part describes subjective tests performed to establish the sampling rate and the number of quantizing levels or corresponding bits per sample which should be used to obtain broadcast-quality television pictures from a p.c.m. system handling PAL colour, 625-line, 5.5 MHz video signals according to the UK standard (CCIR Standard I). These tests included an investigation of adding `dither¿ sign... View full abstract»

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  • Leeds electronics exhibition

    Publication Year: 1974
    PDF file iconPDF (177 KB)  
    Freely Available from IEEE
  • The thames valley section reports¿How one local section serves its members' needs

    Publication Year: 1974
    PDF file iconPDF (151 KB)  
    Freely Available from IEEE