Frequency tunable broadband circularly-polarized converter based on graphene

摘要: The invention discloses a frequency tunable broadband circularly-polarized converter based on graphene. consists of dielectric substrate layer, graphene super surface layer arranged the upper and floor lower layer; is single-layer hollowed-out sheet; namely, plurality butterfly-shaped holes in rectangular arrangement are formed sheet, each hole an axial symmetry pattern by two isosceles triangle with same size through opposite or overlapped apex angles; stacking sheets performance parameters. conversion from linear polarization waves to circular can be realized extremely wide band, excellent achieved, so that tuning bandwidth reflection-type polarizers expanded greater degree, problem restricted due interference conditions solved.