Full azimuthal coverage in planar lens antennas

This paper describes the design of a generalized Luneburg lens antenna that can scan $360^{\mathrm{o}}$ in azimuth. The full azimuth scanning is achieved by deploying two identically stacked lenses and 3 dB90
^o
hybrid couplers. The antenna operates in the n260 band, from 37-40GHz. Simulation results of the integrated antenna system are presented illustrating that the antenna can scan $360^{\mathrm{o}}$ in the azimuth plane.