Simulation study of Luneburg Lens on K-band horn antenna for FMCW Reflectometry Applications

This paper provides design and performance details of six-layer homocentric spherical Luneburg lens on the K-band horn antenna. High gain with narrow beamwidth is achieved by using the proposed Luneburg lens. The lens has an outer diameter of 48.64 mm, sufficient for an 18.05 × 14.02 mm
²
aperture of the pyramidal horn. By using this technique gain of the standard horn antenna is increased by 8 dB, and total directivity is increased by 30 degree. Simulated field patterns and 3-D plots are plotted for better understanding.