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Radio and Electronic Engineer

Issue 5 • Date May 1965

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Displaying Results 1 - 10 of 10
  • On station

    Publication Year: 1965
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (115 KB)

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  • Performance calculations for high-definition Q-band river radar

    Publication Year: 1965, Page(s):263 - 270
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1628 KB)

    This paper discusses vital aspects of high-definition radar sets. It specially examines radial resolving power in connection with video bandwidth. A radio frequency sensitivity-time control circuit and a new technique for checking the correct tuning of the radar set are described. P.p.i. photographs from a Q-band river radar and a waterway supervision radar system are included. View full abstract»

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  • Pulse response of delay lines. Part 1. Constant-k delay lines

    Publication Year: 1965, Page(s):271 - 276
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (488 KB)

    Exact numerical solutions have been obtained for unit step response of constant-k delay lines. Results are given for finite lines terminated at one end and at both ends with a resistance equal to the characteristic impedance of the line, and for the voltage output tapped off an infinite line after a finite number of sections. View full abstract»

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  • A radar receiving array with i.f. multiple-beam forming matrix

    Publication Year: 1965, Page(s):277 - 290
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1906 KB)

    The type of radar array outlined in this paper utilizes individual receiving aerials followed by amplifiers and an intermediate-frequency phasing matrix. This matrix simultaneously issues data corresponding to orthogonal aerial lobes covering a wide angular sector. The general principles involved are outlined as well as supporting experimental work and current developments. View full abstract»

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  • Discussion on ¿A radar receiving array with i.f. multiple-beam forming matrix¿

    Publication Year: 1965, Page(s):290 - 291
    IEEE is not the copyright holder of this material | PDF file iconPDF (212 KB)
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  • Seismic recording techniques in oil prospecting

    Publication Year: 1965, Page(s):297 - 306
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (2510 KB)

    Seismic methods for the detection of underground geological structures have been widely used since their introduction some forty years ago and a large manufacturing and research effort has gone into their development by oil companies and seismic contractors as well as the electronics industry. Both reflection and refraction methods are practicable and details are given of the various sources of se... View full abstract»

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  • An apparatus for automatic quantitative analysis of electrolytes by controlled potential coulometry

    Publication Year: 1965, Page(s):307 - 311
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (479 KB)

    An electronic instrument is described which is interesting as an application of the direct application of an electronic servo type system to chemical analysis. An outline of the basic physical chemical principles and of the circuits of the all-transistor control system is given, with a description of a special output circuit to control the smallest overshoot on switch-on of the electrolysis curren... View full abstract»

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  • Impedance characteristics of glow-discharge tubes in the frequency range 200 c/s¿70 Mc/s

    Publication Year: 1965, Page(s):313 - 323
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (1124 KB)

    Impedance-frequency characteristics of glow-discharge tubes, filled withpure neon, over the frequency range 200 c/s-70 Mc/s have be e n obtained at several values of steady tube current. Molybdenum, nickel, zirconium and tantalum were used as cathode materials and in the case of molybdenum tubes the gas pressure was also varied. The measurements confirm that there are several delayed effects in th... View full abstract»

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  • Discussion on 'Impedance characteristics of glow-discharge tubes in the frequency range 200 c/s-70 Mc/s'

    Publication Year: 1965, Page(s):323 - 324
    IEEE is not the copyright holder of this material | PDF file iconPDF (266 KB)
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  • A light absorption detector for a computer controlled film scanner

    Publication Year: 1965, Page(s):325 - 327
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (257 KB)

    Computers can process photographically recorded data both rapidly and efficiently. It is shown that a general purpose computer may be readily adapted to read film information. A standard computer display monitor is used as a scanning source. The detector employs a photomultiplier and transfers the digitized data to the computer. View full abstract»

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