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Broadcasting, IEEE Transactions on

Issue 4 • Date Dec. 1981

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Displaying Results 1 - 9 of 9
  • IEEE Transactions on Broadcasting - Table of contents

    Publication Year: 1981 , Page(s): c1
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    Freely Available from IEEE
  • IEEE Broadcast, Cable, and Consumer Electronics Society

    Publication Year: 1981 , Page(s): c2
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    Freely Available from IEEE
  • A Technique for Digital Information Broadcasting Using SCA Channels

    Publication Year: 1981 , Page(s): 65 - 70
    Cited by:  Papers (2)  |  Patents (8)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (2281 KB)  

    This paper describes a simple technique using the SCA (Subsidiary Communications Authorization) channel authorized for use in FM and TV broadcasting to provide a one-way digital transmission channel for teletext-type service. The channel is transparent to data format. Preliminary field test results for a 9600 bit/second channel are also presented which show average error rates of less than 1 in 106. View full abstract»

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  • Toward Improved Control of Medium Wave Directional Arrays

    Publication Year: 1981 , Page(s): 71 - 76
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (782 KB)  

    Relatively few types of variable power division circuits have been used in medium wave directional antenna feed systems, most of which suffer phase variation as the power division is adjusted. This paper discusses a class of circuits which can be used to implement a phase invariant adjustable power divider. Also discussed are variable phase shifters which have limited effect on power distribution. These features can simplify the original tuning and possible periodic maintenance. A computer analysis of the probable performance of such devices is presented. The associated problem of system analysis is discussed, particularly the inclusion of the effects of the antenna element coupling. To this end a lumped passive element model for a generalized linear reciprocal N port is presented. View full abstract»

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  • The First Candelabra for Circularly Polarized Broadcast Antennas

    Publication Year: 1981 , Page(s): 77 - 82
    Cited by:  Papers (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (4200 KB)  

    A study of a circularly polarized (CP) television multiple antenna installation shows that improved measurement and theoretical techniques are required to model the scattered horizontal pattern circularity and video response in a candelabra. Previously developed guidelines for horizontally polarized antennas in a candelabra are inadequate to describe the expected performance of CP antennas in the same configuration. Results of calculations and measurements of model CP antennas for a Columbus, Ohio candelabra are included. View full abstract»

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  • A New Technique for Measuring FM & TV Antenna Systems

    Publication Year: 1981 , Page(s): 83 - 93
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (3554 KB)  

    Described here is a measuring system using a computer controlled network analyzer that allows observation of FM and TV broadcast antenna systems. Impedance measurement may be made at any point in a broadcast antenna system where access is possible. Most notably, the VSWR characteristics of an antenna on a tower may be measured from the ground without the effects of the transmission line. Measurement accuracy is 0.1 DB and 0.5 degree return loss with excellent repeatability. The system is suitable for field use allowing evaluation of the antenna and other parts of the RF system. View full abstract»

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  • 1981 Index IEEE Transactions on Broadcasting Vol. BC-27

    Publication Year: 1981 , Page(s): 93a - 93b
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  • Research, Design and Development Engineers: Reduce your Literature-Searching Time by up to 80%

    Publication Year: 1981 , Page(s): 93-c
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    Freely Available from IEEE
  • Information for authors

    Publication Year: 1981 , Page(s): 93d - 93e
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    Freely Available from IEEE

Aims & Scope

IEEE Transactions on Broadcasting covers the field of broadcast technology, including the production, distribution, transmission, and propagation aspects of broadcasting.

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Meet Our Editors

Editor-in-Chief
Yiyan Wu
Communications Research Ctr Canada