Title:
LIQUID CRYSTAL-BASED TRANSMISSIVE RECONFIGURABLE INTELLIGENT SURFACE DEVICE AND RECONFIGURABLE INTELLIGENT SURFACE UNIT CELL STRUCTURE THEREFOR
Document Type and Number:
WIPO Patent Application WO/2024/072077
Kind Code:
A1
Abstract:
The present disclosure relates to a liquid crystal (LC)-based transmissive reconfigurable intelligent surface (RIS) device in a wireless communication system and a liquid crystal-based RIS unit cell structure therefor. A liquid crystal-based transmissive RIS device in a wireless communication system, according to an embodiment of the present disclosure, comprises: control voltage application lines; a plurality of liquid crystal-based transmissive RIS unit cells to which a control voltage is applied through the control voltage application lines; and a RIS controller which applies the control voltage to the plurality of liquid crystal-based transmissive RIS unit cells through the control voltage application lines so as to control resonators in the plurality of liquid crystal-based transmissive RIS unit cells to operate at a resonance frequency, wherein each of the plurality of liquid crystal-based transmissive RIS unit cells includes a first metal pattern operating as a first resonator and a second metal pattern operating as a second resonator, and at least a portion of the first metal pattern and the second metal pattern are physically spaced apart from each other.
Inventors:
OH JUNHWA (KR)
OH JUNGSUEK (KR)
KIM JAEHOON (KR)
OH JUNGSUEK (KR)
KIM JAEHOON (KR)
Application Number:
PCT/KR2023/014990
Publication Date:
April 04, 2024
Filing Date:
September 27, 2023
Export Citation:
Assignee:
SAMSUNG ELECTRONICS CO LTD (KR)
SEOUL NAT UNIV R&DB FOUNDATION (KR)
SEOUL NAT UNIV R&DB FOUNDATION (KR)
International Classes:
H01Q15/00; H01P7/08; H01Q1/38
Foreign References:
| US20180083364A1 | 2018-03-22 | |||
| US20180316090A1 | 2018-11-01 | |||
| US20140266897A1 | 2014-09-18 | |||
| KR102374153B1 | 2022-03-11 |
Other References:
NDJIONGUE ALAIN R.; NGATCHED TELEX M. N.; DOBRE OCTAVIA A.; HAAS HARALD: "Toward the Use of Re-configurable Intelligent Surfaces in VLC Systems: Beam Steering", IEEE WIRELESS COMMUNICATIONS, COORDINATED SCIENCE LABORATORY; DEPT. ELECTRICAL AND COMPUTER ENGINEERING; UNIVERSITY OF ILLINOIS AT URBANA-CHAMPAIGN, US, vol. 28, no. 3, 5 July 2021 (2021-07-05), US , pages 156 - 162, XP011867158, ISSN: 1536-1284, DOI: 10.1109/MWC.001.2000365
Attorney, Agent or Firm:
LEE, Keon-Joo et al. (KR)
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