Abstract

This paper outlines the optimization procedure for designing a planar dielectric Mikaelian lens with the emphasis on achieving one-dimensional beam steering. The lens unique flat shape is a key feature that enables a straightforward and cost-effective planar feed. To verify the design procedure, a lens prototype made out of a dielectric glide-symmetric periodic structure embedded in a parallel plate waveguide is constructed. The propagation constant and dielectric losses of the glide-symmetric periodic structure are analyzed using the rigorous coupled wave analysis method. The antenna design has a focused fan-shaped beam that can be steered over a 100 degrees range through 11 ports, with scan loss below 3 dB. The Mikaelian lens has a flat feeding interface, minimizing the mutual coupling between ports. These characteristics have great potential for realizing affordable multi-beam antennas for 5G/6G.