公开(公告)号：US09838224B2

公开(公告)日：2017-12-05

申请号：US15220707

申请日：2016-07-27

Applicant: Electronics and Telecommunications Research Institute

Inventor： Mi Kyung Suk ,  Bong Su Kim ,  Min Soo Kang ,  Kwang Seon Kim ,  Woo Jin Byun ,  Young Seung Lee

IPC: H04L25/02 ,  H04L25/03 ,  H04B7/0413

CPC classification number: H04L25/02 ,  H04B7/0413 ,  H04L25/0206 ,  H04L25/0214 ,  H04L25/03331

Abstract: The present invention relates to a reception apparatus. The reception apparatus includes a plurality of reception antennas; and a signal processing unit configured to use reception characteristic of the plurality of reception antennas, wherein the signal processing unit comprises a channel estimation unit configured to respectively estimate a channel response matrix of each signal received via the plurality of reception antennas, and a coding unit configured to define a coding matrix based on an inverse matrix of the estimated channel response matrix, and to obtain a final output signal corresponding to each reception antenna by applying the coding matrix to each received signal.

公开(公告)号：US09831561B2

公开(公告)日：2017-11-28

申请号：US15135709

申请日：2016-04-22

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Woo Jin Byun ,  Yong Heui Cho ,  Young Seung Lee

IPC: H01Q19/10 ,  H01Q19/18 ,  H01Q15/14 ,  H01Q19/185 ,  H01Q19/19

CPC classification number: H01Q15/148 ,  H01Q19/185 ,  H01Q19/19

Abstract: A reflective antenna apparatus according to an exemplary embodiment of the present invention includes a feeder which receives an electromagnetic wave from a transmitter and distributes the electromagnetic wave to the antenna apparatus; a sub reflector which has a step formed to generate an orbital angular momentum (OAM) mode electromagnetic wave; and a main reflector which has a step formed to generate the same electromagnetic wave as the OAM mode generated by the sub reflector and cancels the OAM mode electromagnetic wave generated by the sub reflector and an OAM mode electromagnetic wave generated by the main reflector to radiate the electromagnetic waves to a far field.

公开(公告)号：US11643631B2

公开(公告)日：2023-05-09

申请号：US16136019

申请日：2018-09-19

Applicant: Electronics and Telecommunications Research Institute ,  FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Young Seung Lee ,  Jae-Young Chung ,  Sang Bong Jeon

IPC: C12M1/42 ,  C12M1/12 ,  C12M1/00 ,  C12M1/34 ,  C12M1/02 ,  G01N29/24

CPC classification number: C12M35/06 ,  C12M1/12 ,  C12M23/34 ,  C12M25/02 ,  C12M25/06 ,  C12M35/02 ,  C12M35/04 ,  C12M41/00 ,  C12M41/12 ,  C12M41/18 ,  C12M41/20 ,  G01N29/2412 ,  G01N2223/101

Abstract: Disclosed is an in vitro exposure system that may radiate a uniform field having a constant wavefront to an experimental cell container and expose each cell container to a same electromagnetic field.