Abstract
ABSTRACTAn axially symmetric diffraction antenna of a new type is presented and studied in details in the paper. The antenna is based on the effect of Cherenkov-like radiation. In contrast to diffraction antennas presented earlier, the proposed antenna does not contain periodic structures, which are effortful in manufacturing for millimetre and shorter waves. The antenna consists of a dielectric-filled cylindrical waveguide which feeds a biconical dielectric prism. Simulation results show that the proposed antenna has high efficiency, low sidelobe level, and the radiation pattern with high directivity. The proposed antenna could be used in various communication and radar systems.
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