Beam collimator based on angular domain dispersion metasurface

The invention relates to an angular domain dispersion metasurface-based beam collimator, which relates to the field of microwave frequency band electromagnetic wave regulation and control, and comprises a plurality of angular domain dispersion units which are periodically arranged in an array form, the angular domain dispersion unit comprises a metal pattern layer and two parallel dielectric substrates; the metal pattern layer comprises two first metal pattern layers and a second metal pattern layer; the two first metal pattern layers are symmetrically arranged on the outer sides of the two dielectric substrates, and one first metal pattern layer corresponds to one dielectric substrate; and the second metal pattern layer is arranged between the two dielectric substrates. The beam collimator provided by the invention realizes collimation emission of +/-45-degree and 0-degree incident electromagnetic waves. 本发明涉及一种基于角域色散超表面的波束准直器，涉及微波频段电磁波调控领域，包括：多个按阵列形式周期排列的角域色散单元；所述角域色散单元包括金属图案层和两个平行设置的介质基板；所述金属图案层包括两个第一金属图案层