Abstract
A design method of the 3-D-printed Luneburg lens (LL) antenna is presented in this paper. The LL antenna consists of a metal reflective ground, seven hemispherical shells, and a corrugated horn. The approximate permittivity of each shell is realized by inserting air holes with different ratios of dielectric and air. The LLs with vertical and radial holes are designed and simulated, respectively. The corrugated horn antenna is utilized as the feed source for the lens due to its rotationally symmetric pattern. A Luneburg lens whose diameter is 240 mm is designed and manufactured by 3D printing technology. The simulation results confirm that a peak gain of 28.4 dBi with a 1.2 dBi gain fluctuation at 12.5 GHz of the LL antenna can be achieved.
Published Version
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