Abstract
This paper deals with a novel approach for designing dual-band dipole radiators. The brief explanation of the basic antenna characteristics obtained is given in the paper. The approach proposed is based on the exact analytical solution for the overall input impedance of a system which consists of two ends-fed dipoles. Then, based on this solution the comparison of the analytical and the simulated results is derived and shown in the paper. In the printed model of the system proposed we compensate huge capacitance occurring in the input impedance of a stand-alone ends-fed dipole by decreasing the gap between the dipoles and the ground plane. Besides, the mathematical model of the phase shifter for phased antenna arrays designing, which is designed for improving the linearity of the phase shifting performance is presented below. Thirdly, the crossed dipole-like antenna fed by rectangular waveguide is also proposed in the paper.
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