Design & EM Simulation of a Continuous-Dielectric Luneburg Lens Antenna Using COMSOL-PyAEDT

In this paper, a new approach of the design and electromagnetic (EM) simulation of a graded-index (GRIN) Luneburg lens antenna is shown and discussed. Two FEM-based commercial EM software packages, COMSOL and HFSS, were utilized to design, simulate, and predict the EM performances of the lens antenna. MATLAB scripting language was utilized to interact with the COMSOL solver and design and generate the lens' inhomogeneous permittivity profile, and python-based scripting language, PyAEDT, was used to control HFSS solver and simulate the EM performance of the designed lens. Full wave electromagnetic simulation results of an example Luneburg lens antenna (60mm diameter) with WR28 waveguide source are presented along with the detail description of the simulation approach.