US 11,728,552 B2
Phase shifter, antenna, and control method of phase shifter
Tuo Sun, Beijing (CN)
Assigned to BEIJING BOE TECHNOLOGY DEVELOPMENT CO. , LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed by Beijing BOE Technology Development Co., Ltd., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Filed on May 29, 2019, as Appl. No. 16/425,651.
Claims priority of application No. 201811115996.5 (CN), filed on Sep. 25, 2018.
Prior Publication US 2020/0099115 A1, Mar. 26, 2020
Int. Cl. H01P 1/18 (2006.01); H01Q 3/36 (2006.01)
CPC H01P 1/184 (2013.01) [H01Q 3/36 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A phase shifter, comprising:
a first base substrate;
a plurality of microstrip lines arranged on the first base substrate, and configured to transmit an electromagnetic wave signal and be applied with a grounded voltage;
a dielectric layer, arranged on a side of the plurality of microstrip lines away from the first base substrate;
a plurality of separate voltage control layers arranged on a side of the dielectric layer away from the first base substrate, corresponding to the plurality of microstrip lines respectively, and configured to be applied with a control voltage; and
a plurality of control signal lines respectively coupled to the plurality of separate voltage control layers and arranged on a side of the plurality of separate voltage control layers away from the first base substrate,
wherein an orthographic projection of a microstrip line on the first base substrate is within an orthographic projection of a corresponding voltage control layer on the first base substrate,
wherein a dielectric constant of the dielectric layer is varied with the control voltage applied to the separate voltage control layers and the grounded voltage applied to the microstrip lines,
wherein the plurality of separate voltage control layers are configured to shield the electromagnetic wave signal transmitted by the plurality of microstrip lines and not transmit the electromagnetic wave signal.