By Topic

Radio and Electronic Engineer

Issue 12 • December 1978

Filter Results

Displaying Results 1 - 7 of 7
  • Can we learn from the past?

    Publication Year: 1978
    IEEE is not the copyright holder of this material | PDF file iconPDF (120 KB)
    Freely Available from IEEE
  • A microprocessor-controlled phase-locked signal source

    Publication Year: 1978, Page(s):593 - 602
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (896 KB)

    The paper outlines the principles behind an approximating frequency synthesizer based on continued fractions to derive the data required for the addressable counters of the digital phase-locked loops. A hardware implementation is described based on a cheap microprocessor and calculator chip combination for the digital content and integrated circuit phase-locked loops for the analogue section. The ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A novel technique for programmed generation of multifrequency composite sinusoids

    Publication Year: 1978, Page(s):603 - 611
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (877 KB)

    Test signals consisting of a set of composite sinusoids have found increasing application recently in the non-linear control system testing field. This paper presents a new approach to the implementation of a multifrequency signal generator capitalizing on recent advances in digital techniques. The instrument generates N sinusoids of programmable relative frequency over a very wide dynamic range, ... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Realizable filters that minimize intersymbol interference

    Publication Year: 1978, Page(s):612 - 618
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (558 KB)

    A common requirement in the design of data transmission filters is to provide a relatively large impulse (or pulse) response at t = t0, and near-zero responses at t = to + k (k any integer), in order to minimize intersymbol interference. The solution to this problem for impulsive inputs has been reported recently. This paper extends the results to pulse-type inputs. Numerical examples are given. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A simple mathematical model of co-channel and adjacent channel interference in land mobile radio

    Publication Year: 1978, Page(s):619 - 622
    Cited by:  Papers (4)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (493 KB)

    A simple mathematical model is used to predict co-channel and adjacent channel interference effects in land mobile radio, valid for flat urban terrain. Results obtained, although oversimplified compared with real-life mobile radio systems, yield insights into the properties of differing types of modulation. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Near-field broadside coupling between two H-plane sectoral horns

    Publication Year: 1978, Page(s):623 - 630
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (872 KB)

    The near-field broadside coupling between a pair of two-dimensional H-plane sectoral horns is derived using the method of overlapping regions in conjunction with Schwarz's procedure to solve the resulting integral equations by numerical iterations as well as the generalized scattering matrix technique. The primary advantage of the method is that it allows an arbitrary initial assumption of the ape... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • IBC '78

    Publication Year: 1978, Page(s):636 - 638
    IEEE is not the copyright holder of this material | PDF file iconPDF (534 KB)
    Freely Available from IEEE