DocumentCode
1252263
Title
The AM umbrella antenna
Author
Christman, Alan M. ; Beverage, Clarence M.
Author_Institution
Grove City Coll., PA, USA
Volume
45
Issue
2
fYear
1999
fDate
6/1/1999 12:00:00 AM
Firstpage
162
Lastpage
170
Abstract
One of the greatest limiting factors in locating an AM broadcast tower is the significant amount of acreage occupied by the buried radials. The authors describe a novel method of feeding a grounded tower which overcomes this difficulty, since essentially no land is required for the earth connection. Computer-predicted values of the radiated electric-field intensity are competitive with those generated by conventional techniques. A scale model has been constructed, and measured results are discussed in comparison with computed values
Keywords
amplitude modulation; antenna feeds; antenna radiation patterns; antenna testing; broadcast antennas; poles and towers; radio broadcasting; telecommunication computing; AM broadcast tower; AM umbrella antenna; buried radials; computer modelling; computer-predicted values; earth connection; grounded tower feeder; measured results; medium-wave broadcast antennas; radiated electric-field intensity; scale model; Broadcasting; Cable insulation; Cities and towns; Conductors; Earth; Frequency; Leg; Poles and towers; Soil; Wires;
fLanguage
English
Journal_Title
Broadcasting, IEEE Transactions on
Publisher
ieee
ISSN
0018-9316
Type
jour
DOI
10.1109/11.796256
Filename
796256
Link To Document