Lens antenna bf
The all-metal Luneburg lens antenna constructs a gradient refractive index profile in the lens using a metallic metamaterial structure based on sliding symmetric pins, enabling wide-angle scanning with stable gain.
A lens antenna is an antenna that converts spherical or cylindrical waves from a point source or linear source into plane waves, thereby generating pencil-shaped, sector-shaped, or other beam patterns. It features low sidelobes and good pattern symmetry. Such antennas are primarily used in microwave communications, radar, navigation, and other applications.