DocumentCode
1137628
Title
Broadcasting with megawatts of power: the modern era of efficient powerful transmitters in the Middle East
Author
Mina, Adil ; Parry, Fred
Author_Institution
Continental Electron., Dallas, TX, USA
Volume
35
Issue
2
fYear
1989
fDate
6/1/1989 12:00:00 AM
Firstpage
121
Lastpage
130
Abstract
A description is given of the 1- and 2-MW transmitters developed, built, and installed in the Middle East to satisfy requirements that provide for coverage of vast areas that can best be reached with high-power AM transmissions. The discussion also covers: early high-power developments; the Doherty high-efficiency screen-modulated amplifier; the overall power amplifier circuit and its operation; the modulator circuit; antennas; ground systems; and transmission lines. Of of the nine transmitters installed, four have already seen ten years of service and the remaining five are close to reaching a decade of dependable operation
Keywords
radio transmitters; 1 MW; 2 MW; Doherty high-efficiency screen-modulated amplifier; Middle East; antennas; ground systems; high-power AM transmissions; modulator circuit; power amplifier; radio; transmission lines; transmitters; Africa; Broadcasting; Electrons; Europe; Frequency; Loaded antennas; Manufacturing; Power generation; Relays; Transmitters;
fLanguage
English
Journal_Title
Broadcasting, IEEE Transactions on
Publisher
ieee
ISSN
0018-9316
Type
jour
DOI
10.1109/11.30823
Filename
30823
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