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Transactions of the IRE Professional Group on Vehicular Communications

Popular Articles (November 2014)

Includes the top 50 most frequently downloaded documents for this publication according to the most recent monthly usage statistics.
  • 1. Receiver and systems design requirements for adjacent- and split-channel operation

    Page(s): 11 - 36
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2600 KB)  

    A good engineer is never sure about anything in a final, absolute sense. A good engineer is a complicated animal who is constantly faced with the necessity for making compromises. While he is never sure of anything in an absolute sense, he damn well knows what he knows, provided you accept a few dozen odd quslifications. He is a practical guy, who is as consistently successful as the accuracy of his disciplined guesses. In the constant determination of the question of degree, he must include factors of safety and standards to insure good performance while not over-protecting to the point of impractical complexity and uneconomical production costs. View full abstract»

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  • 2. Unidirectional antennas for 450 to 460 mc

    Page(s): 134 - 140
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (760 KB)  

    The 450- to 460-mc emergency communications band is, in a sense, between vhf and microwaves as far as unidirectional antennas are concerned; therefore, antennas commonly used for both applications are practical possibilities for this band. It is the purpose of this paper to summarize the characteristics of several types of antennas that might be used for this application. While there are many types of unidirectional antennas, three stand out as presenting the best possibilities from a practical standpoint. They are the corner reflector, the Yagi or parasitic array, and the parabolic. View full abstract»

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  • 4. Concerning the minimum number of resonators and the minimum unloaded Q needed in a filter

    Page(s): 85 - 117
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1920 KB)  

    Given a selective circuit or filter specification, two important questions which arise are: what is the minimum number of elements which can be used to satisfy the specification, and what is the minimum unloaded Q which these elements must have? This paper answers these questions by means of three pairs of design equations, Equations 6 and 11, Equations 7 and 12, and Equations 8 and 13 for filter networks supplying attenuation zeros only (i.e. filters equivalent to constant K type filters) and the corresponding three pairs of equations, Equations 22 and 32 Equations 23 and 33, and Equations 24 and 34, for filters supplying both attenuation zeros and attenuation poles (i.e. filters equivalent to m-derived type filters). View full abstract»

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  • 5. A dispatcher's wayside-to-train communications system

    Page(s): 17 - 23
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1632 KB)  

    The title "wayside-to-train" applies to a series of equipments of unitized construction which can be grouped in various arrangements to fabricate a communications system which will permit a dispatcher, or anyone else at one or more central points, to talk directly with the crew of a train regardless of its location along a predetermined territory. The type, variety and nature of these equipments are sufficiently versatile to permit, in the majority of cases, the layout of a system as simple or as complex as an individual railroad desires, without requiring the design and fabrication of special or "custom" equipment. View full abstract»

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Aims & Scope

This Transactions ceased production in 1954. The current retitled publication is IEEE Transactions on Vehicular Technology.

Full Aims & Scope