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A Polarization Compensation Approach Utilizing a Paraboloid Photonic-Crystal Structure for Crossed-Dipole Excited Reflector Antennas
By
Progress In Electromagnetics Research, Vol. 85, 393-408, 2008
Abstract
An approach utilizing a paraboloid photonic crystal structure (PPCS) is proposed in this paper to compensate the polarization discrimination of an antenna's radiation. It is demonstrated by considering a reflector antenna excited by a pair of crossed-dipoles, whose circularly polarized (CP) radiation may be distorted due to the scattering from the finite reflector surface. The proposed approach tends to compensate the discrimination and achieve a wider beamwidth of good axial ratios while, in the mean time, retaining a less gain loss. The advantage of this approach is that the PPCS can be integrated into a radome structure of the antenna without increasing an excess cost. Numerical studies are conducted in this paper and demonstrate that this compensation method can achieve a beamwidth of about 30 degrees at the frequency of 12.45 GHz.
Citation
Bin Li Kuei-Jen Lee Hsi-Tseng Chou Wanyi Gu , "A Polarization Compensation Approach Utilizing a Paraboloid Photonic-Crystal Structure for Crossed-Dipole Excited Reflector Antennas," Progress In Electromagnetics Research, Vol. 85, 393-408, 2008.
doi:10.2528/PIER08081703
http://www.jpier.org/PIER/pier.php?paper=08081703
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