Conference paper
Electrically small circularly polarized spherical antenna with air core
In
2013 7th European Conference on Antennas and Propagation
—
2013, pp. 233-236
Abstract
An electrically small circularly polarized self-resonant spherical antenna with air core is presented. The antenna is a modified multiarm spherical helix exciting TM10 and TE10 spherical modes with equal radiated power, and thus yielding perfect circular polarization over the entire far-field sphere (except the polar regions, where the radiation is low).
The self-resonance is achieved by exciting higher-order TM modes, which provide the necessary electric stored energy in the near-field, while contributing negligibly to the far-field radiation of the antenna. The antenna has electrical size ka = 0.254, and its radiation quality factor Q is 1.76 times the Chu lower bound.
| Language: | English |
|---|---|
| Publisher: | IEEE |
| Year: | 2013 |
| Pages: | 233-236 |
| Proceedings: | 7th European Conference on Antennas and Propagation |
| ISBN: | 1467321877 , 8890701811 , 8890701838 , 9781467321877 , 9788890701818 and 9788890701832 |
| Types: | Conference paper |
| ORCIDs: | Kim, O. S. |
