Design of Compact Wideband Circularly Polarized Conical Helix
- DOI
- 10.2991/cisia-15.2015.37How to use a DOI?
- Keywords
- circular polarization; helical antenna; conical helix; wideband antenna
- Abstract
A novel compact wideband circularly-polarized (CP) helix antenna is presented in this paper. Unlike conventional helical geometry, our design adopts a tapered metal strip which is rolled into a conical shape and is simply fed by attaching to a 50? coaxial cable. All the configuration parameters are optimized by using modified multiobjective evolutionary algorithm based on decomposition (MOEA/D) for broad operation bandwidth. The proposed helix antenna provides a -10 dB impedance bandwidth of more than 81% from 2.1GHz to above 5GHz, a 3-dB axial-ratio bandwidth of 58% (2.4GHz~4.36GHz), and a 8dBi axial gain bandwidth of 72.5% (2.18GHz~4.66GHz), which leads to an effective CP operation bandwidth of 58%. The overall size of the design is 40mmĂ—40mmĂ— 40mm, i.e., 0.45?Ă—0.45?Ă—0.45? at the centre frequency of 3.38GHz. The compact size and wideband CP performance of this antenna make it promising for high speed wireless communication systems today.
- Copyright
- © 2015, the Authors. Published by Atlantis Press.
- Open Access
- This is an open access article distributed under the CC BY-NC license (http://creativecommons.org/licenses/by-nc/4.0/).
Cite this article
TY - CONF AU - J.N Mei AU - D.W Ding AU - G. Wang PY - 2015/06 DA - 2015/06 TI - Design of Compact Wideband Circularly Polarized Conical Helix BT - Proceedings of the International Conference on Computer Information Systems and Industrial Applications PB - Atlantis Press SP - 139 EP - 141 SN - 2352-538X UR - https://doi.org/10.2991/cisia-15.2015.37 DO - 10.2991/cisia-15.2015.37 ID - Mei2015/06 ER -