DocumentCode
1220229
Title
Analysis of Some Techniques Used in Modern LF-VLF Radiation Systems
Author
Hartley, Harry F.
Author_Institution
Westinghouse Electric Corp., Leesburg, VA, USA
Volume
16
Issue
5
fYear
1968
fDate
10/1/1968 12:00:00 AM
Firstpage
690
Lastpage
700
Abstract
A technique for radiating relatively broad-band pulses from narrow-band antennas is presented and analyzed. Good efficiency and bandwidth are obtained through the techniques of 1) forcing the antenna current to rise to the required level within the required time, and 2) feedback of stored energy from the high-Q antenna to the power supply during the pulse decay. A sample computation is made on a Loran-type pulse having a peak radiated power of 3 kW from a 3O0-foot umbrella antenna. This system has an antenna broad-banding transmitter efficiency product of over three times that of a system using the brute force technique of resistance loading.
Keywords
Antenna feeds; Bandwidth; Communications technology; Computer simulation; Data communication; Electrical engineering; Frequency shift keying; Narrowband; Pulsed power supplies; Transmitting antennas;
fLanguage
English
Journal_Title
Communication Technology, IEEE Transactions on
Publisher
ieee
ISSN
0018-9332
Type
jour
DOI
10.1109/TCOM.1968.1089913
Filename
1089913
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