Title :
Spherical helical antenna with circular polarisation over a broad beam
Author :
Cardoso, J.C. ; Safaai-Jazi, A.
Author_Institution :
Virginia Polytech. Inst. of State Univ., Blacksburg, VA, USA
Abstract :
A spherical helical antenna is proposed and its radiation characteristics are analysed using numerical methods and experimental measurements. Results for a 10 turn helix are presented. These results indicate that the spherical helix can provide circular polarisation over a wide beamwidth. The radiation patterns have a broad main beam, essentially no sidelobes, and low backlobe level.
Keywords :
antenna radiation patterns; broadcast antennas; electromagnetic wave polarisation; backlobe level; broad beam; circular polarisation; numerical methods; radiation characteristics; radiation patterns; spherical helical antenna;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19930220
