DocumentCode
1503941
Title
Backfire/endfire radiation performance of quadrifilar helical antennas
Author
Terada, N. ; Kagoshima, Kenichi
Author_Institution
NTT Radio Commun. Syst. Lab., Take Yokosuka Kanagawa, Japan
Volume
27
Issue
12
fYear
1991
fDate
6/6/1991 12:00:00 AM
Firstpage
1108
Lastpage
1109
Abstract
The relations between the radiation pattern and feeding method in quadrifilar helical antennas is discussed. As a result, it is found that by changing the phase of each wire the helical antenna can achieve two radiation modes; both backfire and endfire radiation. These patterns do not have a difference except in radiation direction. Antenna polarisation of quadrifilar helical antenna depends only on the helical winding direction.
Keywords
antenna feeders; antenna radiation patterns; antenna theory; electromagnetic wave polarisation; microwave antennas; satellite antennas; backfire radiation; circularly polarised waves; endfire radiation; feeding method; helical winding direction; polarisation; quadrifilar helical antennas; radiation modes; radiation pattern;
fLanguage
English
Journal_Title
Electronics Letters
Publisher
iet
ISSN
0013-5194
Type
jour
DOI
10.1049/el:19910688
Filename
76205
Link To Document