Novel fabry-pérot cavity antenna with enhanced beam steering property using reconfigurable meta-surface

Fabry-Pérot cavity (FPC) antenna is essential and widely used in communication system. However, conventional Fabry-Pérot cavity antennas suffer from limited working modes, small beam steering range, and also complex configurations. Here, we propose a novel reconfigurable meta-surface to extend the working modes of the FPC antenna, and thus enhanced beam steering angles (−54° to 54°). The reconfigurable meta-surface consists of 6 × 6 unit cells, occupying an area of 90 mm × 90 mm. The well-designed bias circuits can control the reflection phase of the meta-surface by tuning the states of the inserted PIN diodes, which results in 11 radiation directions of our FPC antenna. For experimental demonstration, we fabricate and assemble an antenna sample working at 5 GHz. Numerical and experimental results coincide well with each other, indicating enhanced radiation properties and wide applications of our FPC antenna.