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 40mm×40mm× 40mm, i.e., 0.45?×0.45?×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/).

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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  -