DocumentCode
1417267
Title
Polyphase broadcasting
Author
Byrne, John F.
Author_Institution
Collins Radio Company, Cedar Rapids, Iowa
Volume
58
Issue
7
fYear
1939
fDate
7/1/1939 12:00:00 AM
Firstpage
347
Lastpage
350
Abstract
THE universal use of amplitude modulation in radio broadcasting service has led to several formidable problems in the design of broadcast transmitting equipment. Improvements in technique which permitted the complete modulation of a carrier (100 per cent modulation) raised new problems in connection with the conversion efficiency of the final radio-frequency amplifier stage. Continued research has resulted in such developments as the high-level plate-modulated amplifier, the high-efficiency linear amplifier, outphasing modulation, and others.
Keywords
Antennas; Electron tubes; Frequency modulation; Radio frequency; Radio transmitters;
fLanguage
English
Journal_Title
Electrical Engineering
Publisher
ieee
ISSN
0095-9197
Type
jour
DOI
10.1109/EE.1939.6431433
Filename
6431433
Link To Document