Fixed-Frequency Reconfigurable Leaky-Wave Antennas with Simplified Biasing

TL;DR

This paper presents a reconfigurable leaky-wave antenna with a simplified biasing scheme that enables dynamic beam steering at a fixed frequency, reducing complexity compared to previous metasurface-based designs.

Contribution

It introduces a novel antenna design that uses metasurfaces as waveguide walls for mode control, eliminating the need for local biasing and simplifying the reconfigurability process.

Findings

Successful beam steering demonstrated through simulations.

Simplified biasing scheme reduces complexity of reconfigurable antennas.

Broadside radiation achieved with passive, angle-independent metasurfaces.

Abstract

This work introduces a reconfigurable leaky-waveguide antenna with a simplified biasing scheme for dynamic beam steering at a fixed frequency. Unlike prior metasurface-aided leaky-waveguide antennas that employ tunable metasurfaces as radiative apertures, our approach utilizes them as a waveguide wall solely to control the guided mode. As a result, the proposed structure eliminates the need for local biasing schemes commonly required in earlier designs, significantly simplifying the biasing process. The radiation is achieved by employing passive, angle-independent metasurfaces that allow beam steering across broadside. The feasibility and effectiveness of the proposed design are validated through full-wave simulations.