All-metal Ku-band Luneburg lens antenna based on variable parallel plate spacing Fakir bed of nails
Fan-Beam Millimeter-Wave Antenna Design Based on the Cylindrical Luneberg Lens
Non-Uniform Metasurface Luneburg Lens Antenna Design
Feed study for a wideband 18 to 45 GHz luneburg lens antenna
Lenses for Circular Polarization Using Planar Arrays of Rotated Passive Elements
A sliced spherical Luneburg lens