公开(公告)号：US20230420823A1

公开(公告)日：2023-12-28

申请号：US18107883

申请日：2023-02-09

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Dong-Uk SIM ,  Sangil KWAK ,  Seung Keun PARK ,  Hyeyeon KWON

IPC: H01Q1/22 ,  G01R29/08 ,  H01Q1/12 ,  H02K7/075

CPC classification number: H01Q1/22 ,  G01R29/0878 ,  G01R29/0814 ,  H01Q1/125 ,  H02K7/075

Abstract: Provided is a mode stirring device. The mode stirring device includes a transmission antenna configured to output a wireless signal to measure wireless performance in an electromagnetic (EM) wave reverberation chamber, an antenna connection bar having one end coupled to a lower end of the transmission antenna, a crankshaft connected to another end of the antenna connection bar, and a motor configured to change a position of the transmission antenna by rotating the crankshaft.

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：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：US20230384360A1

公开(公告)日：2023-11-30

申请号：US18120213

申请日：2023-03-10

Applicant: Electronics and Telecommunications Research Institute

Inventor： Dong-Uk SIM ,  Sangil KWAK ,  Seung Keun PARK ,  Hyeyeon KWON

IPC: G01R31/28 ,  H04B17/00

CPC classification number: G01R31/2822 ,  H04B17/0085

Abstract: Provided is a wireless channel reproduction device having a structure of an reverberation chamber. More specifically, the wireless channel reproduction device may minimize a measurement uncertainty by satisfying recommendations on spatial uniformity or field uniformity of a working volume and may be designed as an internal structure of an reverberation chamber including a plurality of mode agitators.

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：US20130154751A1

公开(公告)日：2013-06-20

申请号：US13713599

申请日：2012-12-13

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE ,  SOONGSIL UNIVERSITY-INDUSTRY COOPERATION FOUNDATION

Inventor： Dong-Uk SIM ,  Young Jun CHONG ,  Yong MOON ,  Hyeon Seok JANG

IPC: H03B7/00 ,  H03B1/00

CPC classification number: H03B7/00 ,  H03B1/00 ,  H03B5/18 ,  H03B2200/0016 ,  H03B2200/0048

Abstract: A voltage controlled oscillator includes a split ring resonator (SRR) configured to have meta-material characteristics fabricated on a board, and an energy compensation circuit configured to cause resonant oscillation of the SRR. The energy compensation circuit is fabricated in the form of an integrated circuit.

Abstract translation: 压控振荡器包括被配置为具有在板上制造的超常材料特性的分裂环谐振器（SRR）和被配置为引起SRR的共振振荡的能量补偿电路。 能量补偿电路以集成电路的形式制造。