Title :
Quadrifilar conical helical antenna with travelling-wave current distribution
Author :
Nakano, H. ; Ikeda, N. ; Yamauchi, J.
Author_Institution :
Coll. of Eng., Hosei Univ., Tokyo, Japan
fDate :
2/1/1997 12:00:00 AM
Abstract :
The radiation characteristics of a quadrifilar conical helix antenna are analysed. Special attention is paid to the generation of a circularly polarised wave over a hemispherical region above the antenna. The present antenna has wideband characteristics with respect to the radiation pattern and the input impedance by virtue of the radiation mechanism characterised by a travelling-wave current. The effects of the cone angle and the pitch angle on the radiation field are also investigated
Keywords :
antenna radiation patterns; current distribution; electric impedance; electromagnetic wave polarisation; helical antennas; circularly polarised wave; cone angle; hemispherical region; input impedance; pitch angle; quadrifilar conical helical antenna; radiation characteristics; radiation field; radiation mechanism; travelling-wave current; travelling-wave current distribution; wideband characteristics;
Journal_Title :
Microwaves, Antennas and Propagation, IEE Proceedings
DOI :
10.1049/ip-map:19970977
