Title :
Truncated spherical helical antennas
Author :
Weeratumanoon, E. ; Safaai-Jazi, A.
Author_Institution :
Bradley Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
fDate :
3/30/2000 12:00:00 AM
Abstract :
The truncated spherical helix is presented as a compact circularly polarised antenna with relatively high gain and moderate bandwidth. A numerical investigation into the radiation properties of this antenna is also presented. The antenna provides a directivity of >9 dB and an axial ratio of <3 dB over a 10% bandwidth. The radiation pattern has a broad main beam and better than 20 dB front-to-back ratio
Keywords :
UHF antennas; antenna radiation patterns; antenna theory; electromagnetic wave polarisation; helical antennas; broad main beam; compact circularly polarised antenna; radiation properties; truncated spherical helical antennas;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20000449
