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Dual-band stacked microstrip antenna using a parabolic-pedestal

To improve the characteristics of the dual-band stacked microstrip antenna, a novel antenna configuration with parabolic-pedestal is proposed in this paper. The proposed antenna is to be used in a mobile satellite communications system. The key parameters of the proposed antenna are analyzed. Simulation results demonstrated that the proposed antenna not only works well at dual-band with circular polarization(CP), but also acts higher gain at low elevation angle.