公开(公告)号：US10903568B2

公开(公告)日：2021-01-26

申请号：US16196517

申请日：2018-11-20

Applicant: NOKIA TECHNOLOGIES OY

Inventor： Senad Bulja ,  Rose Kopf ,  Robert Cahill ,  Majid Norooziarab

IPC: H01Q3/34 ,  H01Q1/48 ,  H01Q9/04 ,  H01Q21/00 ,  H01Q21/06

Abstract: An antenna element includes a patch antenna and a microstrip line separated by an electrochromic material to tune the element. A reflectarray of a plurality of antenna elements is formed on a substrate. The dielectric permitivities of the electrochromic material may be controlled both during manufacture and during operation of the antenna to provide a phase shift to the antenna elements and beamform a signal radiated by the antenna. A bias line may be used to change a shape, direction or circular polarity of a beam radiating from the antenna.