Coaxial-feed axial mode hemispherical helical antenna
- Hui, H. T.
- Chan, K. Y.
- Yung, E. K. N.
- Shing, X. Q.
Publication date
November 1999
DOI Publisher
Institution of Engineering and Technology (IET) ISSN
0013-5194 Citation count (estimate)
18Abstract
A coaxial-feed axial mode hemispherical helical antenna is studied experimentally and theoretically. Results for a 3-turn hemispherical helix indicate that circular polarisation can be obtained over a broad beamwidth. The gain bandwidth is ~33% and the peak gain is 7.6 dB. The input impedance shows that it is a standing wave antenn
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