公开(公告)号：US20240429970A1

公开(公告)日：2024-12-26

申请号：US18679853

申请日：2024-05-31

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Dongho KIM ,  Seung Keun PARK ,  Sang il KWAK ,  Hyeyeon KWON ,  Dong-Uk SIM ,  jeongwoo HUR ,  seong ju KIM ,  Hanjun MAENG

IPC: H04B7/04 ,  H04B7/06

Abstract: A signal conversion method and device for generating a modulation signal are provided. The signal conversion method includes receiving an input signal and a reflection coefficient of a reconfigurable intelligent surface (RIS) according to a sample time, selecting an optimized reflection coefficient of the RIS corresponding to the sample time, and generating the modulation signal by applying the optimized reflection coefficient of the RIS to the input signal.

公开(公告)号：US20160241690A1

公开(公告)日：2016-08-18

申请号：US15044480

申请日：2016-02-16

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong-Uk SIM ,  Sang il KWAK ,  JONG HWA KWON

IPC: H04M1/04 ,  H04B15/02 ,  H05K9/00

CPC classification number: H04B15/02 ,  H05K9/0086

Abstract: Provided is a cover accessory for a wireless communication device, including an electromagnetic suppressing pattern layer on a surface adjoining at least one surface on which an electromagnetic wave is irradiated from the wireless communication device, wherein the electromagnetic suppressing pattern layer includes a first dielectric layer and a frequency selective surface (FSS) pattern with a unit cell having electromagnetic surface resistance periodically repeated thereon, and the FSS pattern is provided by etching the first dielectric layer to inject an FSS pattern material or by printing the FSS pattern material on the first dielectric layer.

Abstract translation: 本发明提供一种无线通信装置的覆盖附件，其特征在于，在与所述无线通信装置照射有电磁波的至少一个面相邻的表面上具有电磁抑制图案层，所述电磁抑制图案层包括第一电介质层和 具有周期性重复其上具有电磁表面电阻的晶胞的频率选择表面（FSS）图案，并且通过蚀刻第一介电层以注入FSS图案材料或通过在第一介电层上印刷FSS图案材料来提供FSS图案 。

公开(公告)号：US20190339315A1

公开(公告)日：2019-11-07

申请号：US16167302

申请日：2018-10-22

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong-Uk SIM ,  Sang il KWAK ,  JONG HWA KWON

IPC: G01R29/08 ,  G01R31/00

Abstract: Provided a reverberation chamber including a pair of a transmitting and receiving antenna and a reflection plate configured to reflect an electromagnetic wave output from the transmitting and receiving antenna to a working volume in a beam direction to improve a field uniformity of the working volume in the reverberation chamber and increase an applicability of the reverberation chamber.

公开(公告)号：US20180231593A1

公开(公告)日：2018-08-16

申请号：US15717407

申请日：2017-09-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong-Uk SIM ,  Sang il KWAK ,  Jong Hwa KWON

IPC: G01R29/08

CPC classification number: G01R29/0821 ,  H01Q15/18

Abstract: Disclosed is an electromagnetic wave reverberation chamber including a column-type mode stirrer including a plurality of plate-shaped electromagnetic wave reflectors connected by a metal column provided on a bottom of the electromagnetic wave reverberation chamber, a ceiling-type mode stirrer including a plurality of plate-shaped electromagnetic wave reflectors connected by a metal column provided on a wall surface of the electromagnetic wave reverberation chamber and disposed around a ceiling of the electromagnetic wave reverberation chamber, and a pyramidal mode stirrer including a plurality of pyramid-shaped electromagnetic wave reflectors and disposed on a wall surface of the electromagnetic wave reverberation chamber.

公开(公告)号：US20160242332A1

公开(公告)日：2016-08-18

申请号：US15042722

申请日：2016-02-12

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang il KWAK ,  JONG HWA KWON ,  Hyun Ho PARK

IPC: H05K9/00

CPC classification number: H05K9/0075

Abstract: Provided is a magnetic shielding sheet. The magnetic shielding sheet according to an embodiment of the inventive concept may include a magnetic sheet including a magnetic material, a plurality of first metal strips provided on the magnetic sheet in a first direction, and a plurality of second metal strips provided on the magnetic sheet in a second direction different from the first direction. According to the inventive concept, a magnetic field applied from the outside may be efficiently shielded by properly arranging the metal strips on the magnetic sheet.

Abstract translation: 提供一种磁屏蔽片。 根据本发明构思的实施例的磁屏蔽片可以包括磁性片，其包括磁性材料，在第一方向上设置在磁性片上的多个第一金属条以及设置在磁性片上的多个第二金属条 在与第一方向不同的第二方向上。 根据本发明构思，通过将金属带适当地布置在磁性片上，可以有效地屏蔽从外部施加的磁场。