US 11,837,802 B2
Liquid crystal antenna unit and liquid crystal phased array antenna
Jie Wu, Beijing (CN); Tienlun Ting, Beijing (CN); Xiangzhong Kong, Beijing (CN); Xue Cao, Beijing (CN); Ying Wang, Beijing (CN); Liang Li, Beijing (CN); Haocheng Jia, Beijing (CN); Peizhi Cai, Beijing (CN); and Chuncheng Che, Beijing (CN)
Assigned to BEIJING BOE SENSOR TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
Appl. No. 16/973,636
Filed by BEIJING BOE SENSOR TECHNOLOGY CO., LTD., Beijing (CN); and BOE TECHNOLOGY GROUP CO., LTD., Beijing (CN)
PCT Filed Sep. 26, 2019, PCT No. PCT/CN2019/108204
§ 371(c)(1), (2) Date Dec. 9, 2020,
PCT Pub. No. WO2020/063766, PCT Pub. Date Apr. 2, 2020.
Claims priority of application No. 201811140473.6 (CN), filed on Sep. 28, 2018.
Prior Publication US 2021/0167497 A1, Jun. 3, 2021
Int. Cl. H01Q 1/38 (2006.01); H01P 1/18 (2006.01); H01Q 9/20 (2006.01); H01Q 1/48 (2006.01); H01Q 23/00 (2006.01)
CPC H01Q 9/20 (2013.01) [H01Q 1/38 (2013.01); H01Q 1/48 (2013.01); H01Q 23/00 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A liquid crystal antenna unit, comprising:
a first substrate;
a second substrate opposite to the first substrate;
a liquid crystal layer between the first substrate and the second substrate;
a transmission line on a first surface and arranged to extend in a first direction along the first surface, wherein the first surface is one of a surface of the first substrate proximal to the second substrate and a surface of the second substrate proximal to the first substrate;
a first antenna oscillator on the first surface and arranged as an elongated dipole extending in a second direction along the first surface, wherein the dipole comprises two poles spaced apart from each other by a gap, and the first antenna oscillator is configured to couple an electromagnetic wave between the two poles and the transmission line at the gap;
a second antenna oscillator on a surface of the second substrate distal to the first substrate and at a position corresponding to the first antenna oscillator, wherein the second antenna oscillator has an elongated shape extending in the second direction along the surface of the second substrate distal to the first substrate, and a length of the second antenna oscillator is less than a length of the first antenna oscillator; and
a ground electrode on a surface of the first substrate distal to the second substrate, wherein the ground electrode comprises an elongated electrode portion at a position corresponding to the first antenna oscillator, the elongated electrode portion extends in the second direction along the surface of the first substrate distal to the second substrate, and a length of the elongated electrode portion is greater than the length of the first antenna oscillator.