Title :
Effects of feed wire on radiation characteristics of a dual spiral antenna
Author :
Nakano, Hisamatsu ; Minegishi, Y. ; Hirose, Keikichi
Author_Institution :
Coll. of Eng., Hosei Univ., Tokyo
fDate :
3/17/1988 12:00:00 AM
Abstract :
The axial ratio and the radiation pattern of a dual spiral antenna improve as the feed wire length is shortened. The bandwidth for circular polarisation within an axial ratio of 3.0 dB is estimated to be 1:1.35 for a feed wire length of zero
Keywords :
antenna feeders; antenna radiation patterns; antenna theory; electromagnetic wave polarisation; axial ratio; bandwidth; circular polarisation; dual spiral antenna; feed wire; radiation characteristics; radiation pattern;
Journal_Title :
Electronics Letters
