A New Beam-Scanning Mechanism for Leaky Wave Antenna Based on Metagratings

Abstract

In this contribution, a new beam-scanning mechanism for leaky wave antenna (LWA) based on metagratings (MGs) technique enabling a dynamic control for a wide-range of farfield patterns is presented. MGs comprised of periodically capacitive and inductive loaded conducting strips in front of a perfect electric conductor (PEC) layer which can be more practical for planar fabrications. The metagrating performance of high gain and wide bandwidth radially with stable and continuous wide-range beam-scanning radiation is achieved. As a result, the wide bandwidth of 9.42-11.6 GHz with continuous beam-scanning of 51° is obtained, realized gain of the antenna is up to 12.7 dBi. Finally, the proposed technique can be representing an important role in new microwave devices enabling a control of beam-scanning radiations.