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Radio and Electronic Engineer

Issue 3 • Date September 1968

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Displaying Results 1 - 11 of 11
  • On being understood

    Publication Year: 1968
    Save to Project icon | PDF file iconPDF (122 KB)  
    Freely Available from IEEE
  • Institution Notices

    Publication Year: 1968
    Save to Project icon | PDF file iconPDF (148 KB)  
    Freely Available from IEEE
  • Synthesis of active filters with optimum sensitivity

    Publication Year: 1968 , Page(s): 135 - 147
    Cited by:  Papers (2)
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1393 KB)  

    Two general RC-active-network synthesis procedures previously described by the author are applied to the synthesis of filters. A third synthesis procedure is now described in which Guillemin's parallelladder procedure is used to realize the passive part of the network. This and the previous two procedures use the Horowitz decomposition which optimizes the sensitivity. Amethod for reducing the numb... View full abstract»

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  • Of Current Interest . . .

    Publication Year: 1968
    Save to Project icon | PDF file iconPDF (153 KB)  
    Freely Available from IEEE
  • Operational aspects of v.h.f. communication and radar surveillance by port operations centres

    Publication Year: 1968 , Page(s): 149 - 152
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (435 KB)  

    The Port Operations Centre passes information from the shore-based radar station to the ship through the Pilot of the ship by v.h.f. communication. The advantages of such rapid, clear and direct communication between a ship underway within a port and a shore authority are described. The operation of this system and present and future developments are also discussed. View full abstract»

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  • Microwave-link characteristics for a harbour surveillance system

    Publication Year: 1968 , Page(s): 153 - 160
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (3275 KB)  

    The paper outlines the technical requirements for a broadband, two-way single hop microwave link with hot stand-by facilities and automatic changeover. The basic design of the various units is described. The method of multiplexing the various signals, namely, radar video, radar sync, aerial bearing, two-state controls and supervisory data, is given in outline and also the techniques employed in or... View full abstract»

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  • A display centre for harbour surveillance and control

    Publication Year: 1968 , Page(s): 161 - 169
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (1597 KB)  

    The operational requirements of a harbour control centre are dominated by the problems of radar surveillance. Narrow channels require a large-scale presentation, which leads to multiple displays, and the difficulties which arise in tracking a target from one display to another. The photographic projector display presents numerous advantages in this respect, as well as in preserving a permanent rec... View full abstract»

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  • Discussion on ¿Integrated harbour surveillance systems¿

    Publication Year: 1968 , Page(s): 169 - 172
    Save to Project icon | PDF file iconPDF (543 KB)  
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  • Computers and Information Processing

    Publication Year: 1968 , Page(s): 173 - 174
    Save to Project icon | PDF file iconPDF (265 KB)  
    Freely Available from IEEE
  • Some aspects of electrostatic transducers

    Publication Year: 1968 , Page(s): 175 - 180
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (472 KB)  

    Usually an electrostatic transducer is represented theoretically as an ideal electromechanical transformer followed by a piston-like diaphragm. This is not exact if a thin diaphragm is used. It is shown that by mathematical treatment of known physical relations the four-pole equations (or matrixes) for the relations between acoustical values and electrical ones may be derived. Further it is shown ... View full abstract»

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  • A contribution to the theory of multivibrators employing distributed circuits

    Publication Year: 1968 , Page(s): 181 - 191
    Save to Project icon | Click to expandAbstract | PDF file iconPDF (776 KB)  

    The equations relating to the theory of multivibrators employing uniformly distributed circuits as cross-coupling elements are examined. By using integral transform methods, analytic solutions for each state of the multivibrator cycle are obtained. The solutions are expressed in terms of orthogonal functions and are readily adapted to numerical analysis. Advantages of the method over methods based... View full abstract»

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