Polarization Dependent Beam Steerable Thin Lens Employing Spatial Filter Arrays

摘要

This paper presents thin lens (<î»/10) having differently steered beam as a function of the polarization of the incident waves. This is based on new designs of polarization dependent spatial filter arrays where tunable range of the phase shift for beam narrowing can be acquired independent of the polarization of the incident waves. The proposed lens consists of periodic unit cells that act as bandpass filters. A unique feature of the unit cell is topology asymmetry in respect to two different axes. By properly arranging these unit cells, a thin lens can be designed to achieve steered beam for the desired direction as a function of theta value. It is presented that this lens can steer the beam up to higher than 60 degrees with lens gain of higher than 9dBi. In this paper, the principles of the unit cells and macro design methodologies for the proposed polarization dependent thin lens, and their simulation result are presented.