By Topic

Radio and Electronic Engineer

Issue 6 • Date December 1966

Filter Results

Displaying Results 1 - 10 of 10
  • Britain's s.d.i. project

    Publication Year: 1966
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (249 KB)

    First Page of the Article
    View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A spectrographic receiver for v.l.f. transmissions

    Publication Year: 1966, Page(s):331 - 335
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (703 KB)

    This paper describes a multiple filter spectrograph for recording the spectrum of a radio signal in the v.l.f. band. The primary use of the equipment is in recording the Doppler shift of v.l.f. signals received via the whistler mode. There are other uses in narrow-band filtering applications. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • The effect of the upper sideband on the performance of a parametric amplifier

    Publication Year: 1966, Page(s):337 - 340
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (315 KB)

    The equations which represent the effect of the upper sideband in a conventional parametric amplifier are derived in detail. It is then shown that the effect of the upper sideband is to present a positive conductance to the signal circuit and partly to nullify the negative resistance associated with the idler circuit. The noise figure expression is derived and shows that noise is introduced into t... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • Some new studies of angular resolution for linear arrays

    Publication Year: 1966, Page(s):341 - 350
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1104 KB)

    This paper studies the limitation on the angular resolving power of linear aerial arrays. It is shown that there are some fundamental differences between the resolving powers of arrays, depending upon whether they are mechanically rotated or undergo electronic beamscanning and this leads to a new approach to superdirectivity for arrays employing continuous mechanical rotation. It is shown that a s... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • New precision techniques for I.L.S. parameter measurement

    Publication Year: 1966, Page(s):351 - 356
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (574 KB)

    The accuracy and simplicity of measurement of the four main parameters of the received I.L.S. signal, i.e. centring accuracy, off-course sensitivity, mean modulation depth and relative tone phase, has been greatly improved by the introduction of a new technique based on phaselocked detection of the 90 and 150 Hz tones using a 120 Hz reference frequency. The paper states the principles of the phase... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An experimental I.L.S. echo-monitoring system

    Publication Year: 1966, Page(s):357 - 362
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (975 KB)

    An experimental system for monitoring on the round the I.L.S. localizer signals reflected from a landing aircraft is described. Special features of the equipment developed for the monitor, and a selection of the trials' results which give an indication of the correlation obtained between airborne and ground recordings, are included. View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An analogue method of studying the angular spectrum of radiation reflected from rough surfaces

    Publication Year: 1966, Page(s):363 - 370
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (803 KB)

    The approximate analogy between the angular spectrum of radiation reflected from a one-dimensional rough surface and the frequency spectrum of a burst of carrier, phase modulated by an appropriate waveform which is directly related to the surface profile, is described. In each case, and subject to certain approximations, the relationship is a Fourier transform. A simple analogue computer is descri... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A portable integrating omnidirectional anemometer

    Publication Year: 1966, Page(s):371 - 376
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (918 KB)

    A portable lightweight instrument developed to investigate the effect of total wind flow on plant growth is described. The sensing device is a directly-heated thermistor bead. From the cooling effect of the wind on the bead the electronic circuits produce a voltage that varies linearly with respect to speed over the range of 1¿30 miles/hour. This voltage is integrated by a d.c. motor with an atta... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • An s-band parametric amplifier using a balanced idler circuit

    Publication Year: 1966, Page(s):377 - 382
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (563 KB)

    The paper describes the performance of an S-band parametric amplifier pumped at J-band using a balanced idler technique where two varactor diodes are incorporated in one encapsulation. It is shown that this technique produces a simple amplifier where the idler and signal circuits can be considered to be completely separate.Effects produced by operating the amplifier at frequencies where the circui... View full abstract»

    Full text access may be available. Click article title to sign in or learn about subscription options.
  • A new system for the digital setting of temperature and humidity controllers

    Publication Year: 1966, Page(s):383 - 387
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (580 KB)

    A system for programmed setting of electronic temperature or humidity controllers, which can commandany of sixteen available settings, is described. The main application is to a set of controlled climate rooms which have different levels of temperature and humidity by day and by night. A defined change from one level to another is required.Wheatstone bridges, set to give the required day and night... View full abstract»

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