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2014-01-24
Far-Field Symmetry Analysis and Improvement of the Cavity Backed Planar Spiral Antenna
By
Progress In Electromagnetics Research C, Vol. 47, 11-18, 2014
Abstract
The far-field pattern symmetry of the cavity backed planar spiral antenna is analyzed. We discover that the back radiation of the planar spiral and the cavity effects degrade the pattern symmetry. To improve the pattern symmetry, an improved method to reduce the back radiation is proposed. Then a novel antenna configuration is designed. The center section of the planar spiral is replaced with a conical spiral. So the back radiation at higher frequency band can be restrained. The broadside gain, axial ratio and pattern symmetry are compared. The results show that this novel configuration can achieve better far-field symmetry at a wider band.
Citation
Jingjian Huang, Hongyu Zhao, Yang Zhou, Weiwei Wu, and Nai-Chang Yuan, "Far-Field Symmetry Analysis and Improvement of the Cavity Backed Planar Spiral Antenna," Progress In Electromagnetics Research C, Vol. 47, 11-18, 2014.
doi:10.2528/PIERC13090904
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