Electrodynamic Simulation of a Multibeam Antenna Based on a Dual Layer Morgan Lens

Abstract A multibeam antenna based on a dual layer Morgan lens that represents two coupled dielectric plates with variable thickness and distance between them is considered. The antenna contains a dual layer lens and a ring array of emitters in the form of Vivaldi antennas and additional elements: a matching layer and a correction ring. The ring array of emitters is closed. The problems of design and selection of parameters of elements of a multibeam antenna are considered. The electrodynamic simulation is performed in the HFSS system. It is shown that the dual layer lens exhibits substantial suppression of the effect of its shading by emitters, which makes it possible to form a system of beams with fan-shaped radiation patterns that provides spatial scanning in the sector of azimuth angles of 360°. The possibility of generation of narrow beams with a low level of side and back lobes is demonstrated.