公开(公告)号：US20230129086A1

公开(公告)日：2023-04-27

申请号：US17912442

申请日：2021-03-19

申请人： AALTO UNIVERSITY FOUNDATION SR

发明人： Aleksi TAMMINEN

IPC分类号： H01Q19/06 ,  G02B5/32 ,  G02B27/09 ,  H01Q15/08 ,  G01S13/89 ,  G01S7/03 ,  H01Q3/36

摘要： A hologram element for broadband shaping of electromagnetic waves and a related system are disclosed. The hologram element has a dispersive surface with a surface height profile that is configured to spatially modulate at least one of an amplitude or a phase of transmitted electromagnetic waves having a bandwidth defined by a start frequency f1 and a stop frequency f2. The surface height profile is further configured to maximize a rate of one of a phase shift or a delay variation at said bandwidth via steps comprised in the dispersive surface, each step having a step height the electrical length of which is a multiple of N+q wavelengths at the start frequency f1 and M multiple of wavelengths at the stop frequency f2.