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This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License
Article
A Study on the Control of BDS/GPS Self-phase Quadrifilar Helical Antenna for Ship
Author(s)
SUN Zhen, ZHAO Jiansen, WANG Shengzheng, XU Tie, LIU Wei and CHANG Yongmeng
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DOI:10.17265/2159-5879/2017.03.003
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ABSTRACT
A reconfigurable, self-phase quadrifilar helical antenna was designed at BDS/GPS frequency band. The impedance, gain and directivity of the antenna were studied by HFSS based on FEM (finite element method) and experiment. Results show the beam width of the main lobe of the pattern can reach over 160° with the help of the load on the top of the antenna. And the power of the side-lobe level is very low. In addition, the quadrifilar helix antenna has excellent right-hand circular polarization performance with a beam width of 180°. Both single-frequency and double-frequency communications can be carried out by the antenna in the ranges between 1.2 and 1.8 GHz, with the bandwidth of each frequency about 60 MHz, the simulating and experimental results are nearly the same.
KEYWORDS
Quadrifilar helical antenna, controllability, beidou, FEM
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