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Radio and Electronic Engineer

Issue 6 • Date June 1975

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Displaying Results 1 - 9 of 9
  • Teletext¿the next major development in television?

    Publication Year: 1975
    Click to expandAbstract | PDF file iconPDF (149 KB)  

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  • Linear and non-linear transversal equalizers for baseband channels

    Publication Year: 1975 , Page(s): 271 - 283
    Cited by:  Papers (1)
    Click to expandAbstract | PDF file iconPDF (1686 KB)  

    Various design techniques are described for conventional equalizers that use transversal filters. Two different arrangements are studied. In the first, the equalization process is located at the receiver, and in the second it is shared between the transmitter and receiver. The optimum linear and non-linear equalizers, together with some suboptimum designs, are described for each of the two arrange... View full abstract»

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  • Digital waveform synthesis

    Publication Year: 1975 , Page(s): 284 - 292
    Cited by:  Papers (2)
    Click to expandAbstract | PDF file iconPDF (1073 KB)  

    A digital function generator has been designed and constructed based on the solution of the simple harmonic differential equation using rate multiplier techniques. The generator is capable of operating over eight decades of frequency 10¿4¿f¿104 Hz providing outputs of triangle, square or sinewaves. Quadrature outputs, starting and stopping at any point in the cycle, are possible with this oscil... View full abstract»

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  • Design of sharp-cut-off low-pass filters with ripples in the pass-band

    Publication Year: 1975 , Page(s): 293 - 298
    Click to expandAbstract | PDF file iconPDF (748 KB)  

    For the design of sharp-cut-off low-pass filters, derived from all-pole Chebyshev filters, one needs to determine n, the order of the filter; m, the order of finite zeros; ¿0, the location of the zeros; and ¿, the ripple controlling factor, from the required specifications of cut-off slope, tolerable pass-band deviation, minimum acceptable attenuation in the stop-band and any other desirable con... View full abstract»

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  • Tracer: a voice-frequency relay system for radio navigation aids

    Publication Year: 1975 , Page(s): 299 - 307
    Cited by:  Papers (2)
    Click to expandAbstract | PDF file iconPDF (1755 KB)  

    A radio-navigation relay system has been developed to monitor and track the position of remote objects such as ships, buoys and balloons. R.f. signals received from a chain of radio-navigation transmitters are converted to an audio frequency and limited in amplitude in a simple low-cost converter unit. The audio output, which retains the position information contained in the initial navigation sig... View full abstract»

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  • On sequences from series-parallel m-sequence generators

    Publication Year: 1975 , Page(s): 308 - 309
    PDF file iconPDF (299 KB)  
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  • Solar radio radiation

    Publication Year: 1975 , Page(s): 309 - 310
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  • A 150-MHz coaxial line radar transmitter for the study of radar aurora

    Publication Year: 1975 , Page(s): 311 - 319
    Click to expandAbstract | PDF file iconPDF (1046 KB)  

    This paper describes 150-MHz, 20-kW coaxial line pulse transmitters constructed for the study of radar aurora. Tuned quarter-wave lines have been used in the high power r.f. amplifier stages and a novel method has been developed to decouple the r.f. input and output feed points from the anode and grid d.c. supply voltages. A solid-state pulse modulator provides the anode and screen power to to the... View full abstract»

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  • Optimism and reality

    Publication Year: 1975
    PDF file iconPDF (378 KB)  
    Freely Available from IEEE