Dual-band Omnidirectional Circularly Polarized Antenna

TitleDual-band Omnidirectional Circularly Polarized Antenna
Publication TypeJournal Article
Year of Publication2013
AuthorsA. Narbudowicz, X. L. Bao, and M. J. Ammann
Journal TitleIEEE Transactions on Antennas & Propagation
Volume61
Issue1
Pagination77-83
Journal Date01/2013
Abstract

A dual-band omnidirectional circularly polarized antenna is proposed. The antenna comprises back-to-back microstrip patches fed by a coplanar waveguide. A very low frequency ratio of 1.182 has been achieved, which can be easily tuned by adjusting four lumped capacitors incorporated into the antenna. An analysis of the omnidirectional circular polarization mechanism as well the dual band operation is provided and confirmed by numerical and experimental data. Key parameters to tune the resonant frequencies and the axial ratio have been identified. The prototype antenna provides omnidirectional circular polarization in one plane with cross polar isolation better than 12 dB for both frequency bands.

Notes

https://www.researchgate.net/publication/258792399_Dual-Band_Omnidirecti...

URLhttp://ieeexplore.ieee.org/stamp/stamp.jsp?tp=&arnumber=6280622
DOI10.1109/TAP.2012.2214992
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