公开(公告)号：US09730369B2

公开(公告)日：2017-08-08

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.

公开(公告)号：US10928432B2

公开(公告)日：2021-02-23

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：US10598711B2

公开(公告)日：2020-03-24

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 ,  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：US09960860B2

公开(公告)日：2018-05-01

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: H04M1/00 ,  H04B15/02 ,  H05K9/00

CPC classification number: H04B15/02 ,  H05K9/0086

Abstract: Provided is a cover accessory for a wireless communication device, includingan 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.