ACTIVE METASURFACE UNIT CELL WITH DUMMY PATTERN TO MAINTAIN A CONSTANT PHASE DIFFERENCE

    公开(公告)号:US20240129752A1

    公开(公告)日:2024-04-18

    申请号:US18485993

    申请日:2023-10-12

    CPC classification number: H04W16/28 H01Q3/46

    Abstract: The disclosure relates to a 5G or 6G communication system to support a higher data transmission rate. The disclosure relates to a reconfigurable intelligent surface (RIS) enabling a low phase error at various incidence angles/reflection angles and an apparatus including the same. The RIS comprises a unit cell pattern formed in a direction corresponding to a polarization direction, the unit cell configured to adjust a reflection phase; a switch operably connected to the unit cell pattern, the switch configured to adjust the reflection phase; and a dummy pattern positioned between unit cell patterns in case that a plurality of unit cells is arranged.

    RECONFIGURABLE INTELLIGENT SURFACE INCLUDING MULTIPLE UNIT CELLS

    公开(公告)号:US20240195458A1

    公开(公告)日:2024-06-13

    申请号:US18536940

    申请日:2023-12-12

    CPC classification number: H04B7/04013

    Abstract: A 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). A reconfigurable intelligent surface (RIS) including a plurality of unit cells in a wireless communication system includes a first pattern included in a top layer of a unit cell included in the RIS, a second pattern included in a bottom layer of the unit cell included in the RIS, and at least one switch configured to electrically ground or short the first pattern and the second pattern in response to a command for determining whether the unit cell included in the RIS operates as a transmissive RIS or a reflective RIS.

    RECONFIGURABLE INTELLIGENT SURFACE FORMING MULTIPLE RESONANCES

    公开(公告)号:US20240007176A1

    公开(公告)日:2024-01-04

    申请号:US18154604

    申请日:2023-01-13

    CPC classification number: H04B7/15528 H04B7/026 H01Q15/148

    Abstract: The present disclosure relates to a 5G communication system or a 6G communication system for supporting higher data rates beyond a 4G communication system such as long term evolution (LTE). A unit cell of a RIS includes a first conductive structure including a first element and a second element disposed under the first element; a second conductive structure including a third element and a fourth element disposed under the third element; and a switch circuit disposed between the first conductive structure and the second conductive structure. As a first RF signal from a first external device is incident on the unit cell, a second RF signal having a first resonance frequency is reflected based on electrical paths formed respectively in the first element and the third element, and a third RF signal having a second resonance frequency different from the first resonance frequency is reflected based on electrical paths formed respectively in the second element and the fourth element.

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