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Radio and Electronic Engineer

Issue 4 • Date 1967

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Displaying Results 1 - 7 of 7
  • Computers in britain

    Publication Year: 1967
    Save to Project icon | PDF file iconPDF (122 KB)  
    Freely Available from IEEE
  • Broadbanding of concentric planar ring arrays by space tapering

    Publication Year: 1967 , Page(s): 211 - 222
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1108 KB)  

    The paper discusses the application of concentric ring arrays as a new approach to space tapering for planar arrays. It describes the design of an array of non-uniformly spaced concentric rings of non-uniform density containing discrete elements. The array can be operated over a large frequency range and wide scan-angles. The ring array was designed to simulate the performance of a Taylor-weighted... View full abstract»

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  • Field-effect studies on indium antimonide films

    Publication Year: 1967 , Page(s): 223 - 228
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (901 KB)  

    Field effect studies have been carried out on thin film InSb inert insulator solid-solid interfaces. The films were prepared by the protected recrystallization method, namely vacuum evaporation and subsequent annealing of the resulting insulator-semiconductor-insulator sandwiches. The high annealing temperatures permissible without danger of reevaporation of the more volatile component gave films ... View full abstract»

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  • The preparation and application of tantalum thin film passive components

    Publication Year: 1967 , Page(s): 229 - 240
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (3047 KB)  

    The paper commences with a comparison of thin film and diffused passive components, then describes the methods of fabricating resistors and capacitors by using sputtered tantalum and also inductors using nichrome/gold. The reasons for choosing tantalum as the resistor material and sputtering as the deposition method are discussed. The work described in the paper has concentrated on making resistor... View full abstract»

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  • The development of a pay-television system and equipment

    Publication Year: 1967 , Page(s): 241 - 256
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (2524 KB)  

    The system described applies to wired-broadcasting networks of the multi-pair variety. The pay-television user establishes credit by the insertion of one or more coins into a special subscriber's unit. The established credit will be consumed at a faster rate for an expensive programme, and vice versa. On the other hand, the subscriber can at any time switch off, and preserve the remaining credit f... View full abstract»

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  • An H-plane high-power TEM ferrite junction circulator

    Publication Year: 1967 , Page(s): 257 - 262
    Cited by:  Papers (1)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (774 KB)  

    In this paper a new junction circulator is described which consists of a composite junction having a beryllia disk sandwiched between two oversized garnet disks on each side of the TEM lines. In this way the r.f. power is evenly divided among four thin garnet disks. This approach results in a very large thermal capacity. A general characterization of the junction in terms of the experimental admit... View full abstract»

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  • Low frequency sound sources: statement of problem and some possible solutions

    Publication Year: 1967 , Page(s): 263 - 272
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (974 KB)  

    The main stumbling block in a project to measure the backscattering cross-section (target strength) of commercial fish at frequencies in the band 300 Hz to 3000 Hz has been that of providing a suitable sound source. The spectrum level requirement of this source is + 70 dB relative to 1 ¿bar (0.1 N/m2) at 1 m per Hz across the band, or about 100 W peak power during a 10 ms pulse at any frequency. ... View full abstract»

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