Document Type
Article
Rights
Available under a Creative Commons Attribution Non-Commercial Share Alike 4.0 International Licence
Disciplines
Communication engineering and systems
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.
DOI
https://doi.org/10.1109/APMC.2012.6421505
Recommended Citation
Narbudowicz, A., Bao, X. L., & Ammann, M. J. (2013) Dual-band Omnidirectional Circularly Polarized Antenna, IEEE Transactions on Antennas & Propagation, vol. 61, issue 1, pp. 77-83, 01/2013. doi:10.1109/APMC.2012.6421505
Funder
SFI
Publication Details
IEEE Transactions on Antennas & Propagation, vol. 61, issue 1, pp. 77-83, 01/2013.