公开(公告)号：US20140286449A1

公开(公告)日：2014-09-25

申请号：US13922819

申请日：2013-06-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： Kwang Seon KIM ,  Min Soo KANG ,  Bong-Su KIM ,  Woo Jin BYUN

IPC: H04B7/04

CPC classification number: H04B7/0602

Abstract: A wireless link apparatus includes a plurality of antennas; a signal detector configured to calculate SNR based on a signal received from at least one of the plurality of antennas; and a mode selector configured to determine the number of an antenna to be used in modulation method and signal transmission by comparing the calculated SNR with a preset critical value. Further, the wireless link apparatus includes a transmitter configured to modulate a signal in the modulation method determined by the mode selector and transmit the modulated signal using an antenna corresponding to the determined number of the antennas.

Abstract translation: 无线链路装置包括多个天线; 信号检测器，被配置为基于从所述多个天线中的至少一个天线接收的信号来计算SNR; 以及模式选择器，被配置为通过将所计算的SNR与预设临界值进行比较来确定调制方法和信号传输中要使用的天线的数量。 此外，无线链路装置包括：发射机，被配置为以由模式选择器确定的调制方式调制信号，并使用与确定数量的天线对​​应的天线发射调制信号。

公开(公告)号：US20230216211A1

公开(公告)日：2023-07-06

申请号：US17899729

申请日：2022-08-31

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Jung Nam LEE ,  Heon Kook KWON ,  Kwang Seon KIM

IPC: H01Q21/06 ,  H01Q21/00 ,  H01Q13/02

CPC classification number: H01Q21/064 ,  H01Q21/0006 ,  H01Q13/02

Abstract: A microwave beam-forming antenna may include: a main reflector installed on one surface of an antenna body; an array feed horn installed on a center portion of the main reflector; a sub-reflector disposed to be spaced apart from the array feed horn on the main reflector; and a plurality of waveguide feeds respectively connected to a plurality of horn antennas arranged in the array feed horn.

公开(公告)号：US20210153200A1

公开(公告)日：2021-05-20

申请号：US17082429

申请日：2020-10-28

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Heon Kook KWON ,  Kwang Seon KIM ,  Jung Nam LEE ,  JAE HO JUNG ,  Young Kyun CHO

IPC: H04W72/04 ,  H04L27/26

Abstract: A communication method and apparatuses performing the same. The communication method includes arranging first subcarriers of a first frequency domain and second subcarriers of a second frequency domain based on a mirror point and performing communication based on an orthogonal frequency-division multiplexing (OFDM) communication scheme using at least one of the first subcarriers and the second subcarriers.

公开(公告)号：US20200266775A1

公开(公告)日：2020-08-20

申请号：US16788177

申请日：2020-02-11

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sun Woo KONG ,  Kwang Seon KIM ,  Jee Hoon PARK ,  Kwang Chun LEE ,  Hui Dong LEE ,  Seung Hyun JANG

IPC: H03F3/193 ,  H03F1/22 ,  H03F1/56 ,  H03F1/34 ,  H03F3/195

Abstract: An amplifier may comprise first and second matching networks; first and second transistors; and a transformer including first to third inductors. Also, a gate and a source of the first transistor are connected to the first matching network, one end of the first inductor is connected to a drain of the first transistor, the other end of the first inductor is connected to a source of the second transistor, one end of the second inductor is connected to a gate of the second transistor, the other end of the second inductor is grounded, one end of the third inductor is connected to a drain of the second transistor, and the other end of the third inductor is connected to the second matching network.

公开(公告)号：US20180316095A1

公开(公告)日：2018-11-01

申请号：US15958981

申请日：2018-04-20

Applicant: Electronics and Telecommunications Research Institute

Inventor： Min Soo KANG ,  Bong Su KIM ,  Kwang Seon KIM ,  Myung Sun SONG ,  Woo Jin BYUN

IPC: H01Q15/14 ,  H01Q19/19

Abstract: A transceiving apparatus may comprise a radiator emitting a beam; a receiver receiving a beam; a first sub-reflector which is provided to face the radiator and changes an orbital angular momentum (OAM) mode order of a beam; a second sub-reflector which is provided to face the receiver and changes an OAM mode order of a beam differently from the first sub-reflector; and a main reflector which is provided to face the first sub-reflector and the second sub-reflector.

公开(公告)号：US20160156099A1

公开(公告)日：2016-06-02

申请号：US14723657

申请日：2015-05-28

Applicant: Electronics and Telecommunications Research Institute

Inventor： Bong Su KIM ,  Min Soo KANG ,  Kwang Seon KIM ,  Woo Jin BYUN ,  Mi Kyung SUK

IPC: H01Q3/01

CPC classification number: H01Q21/061 ,  H01Q3/26

Abstract: The present invention provides an array antenna apparatus for a rotation mode, a wireless communication terminal, and a method thereof. The apparatus according to the exemplary embodiment includes an antenna array including a plurality of antenna elements; and a control unit which determines an antenna pattern in accordance with a transmission/reception characteristic of a signal and assigns a weight to antenna elements in a position corresponding to the determined antenna pattern on the antenna array to implement a rotation mode antenna based on the antenna element to which the weight is assigned.

Abstract translation: 本发明提供了一种用于旋转模式的阵列天线装置，无线通信终端及其方法。 根据示例性实施例的装置包括：天线阵列，包括多个天线元件; 以及控制单元，其根据信号的发送/接收特性来确定天线方向图，并且在与天线阵列上确定的天线方向图对应的位置中的天线元件分配权重，以实现基于天线的旋转模式天线 分配重量的元素。

公开(公告)号：US20150188660A1

公开(公告)日：2015-07-02

申请号：US14582399

申请日：2014-12-24

Applicant: Electronics and Telecommunications Research Institute

Inventor： Woo Jin BYUN ,  Yong Heui CHO ,  Kwang Seon KIM ,  Bong Su KIM ,  Min Soo KANG ,  Jong Soo LIM

IPC: H04J14/04

CPC classification number: H04J14/04 ,  H04B10/2581 ,  H04B10/70

Abstract: Provided is an apparatus and method for simultaneously transmitting and receiving orbital angular momentum (OAM) modes. An apparatus for transmitting OAM modes may include a mode multiplexing apparatus, and a matrix array antenna configured to output OAM modes for electromagnetic waves based on mode signals, wherein the mode multiplexing apparatus may include hybrid couplers configured to generate a plurality of output signals having different phases and different amplitudes by mixing and distributing a plurality of input signals, and phase shifters configured to generate the mode signals by shifting the phases of the output signals.

Abstract translation: 提供了一种用于同时发送和接收轨道角动量（OAM）模式的装置和方法。 一种用于发送OAM模式的装置可以包括模式多路复用装置，以及矩阵阵列天线，被配置为基于模式信号输出用于电磁波的OAM模式，其中模式多路复用装置可以包括混合耦合器，其被配置为生成具有不同的多个输出信号 通过混合和分配多个输入信号的相位和不同幅度，以及配置为通过移位输出信号的相位来产生模式信号的移相器。

公开(公告)号：US20140334284A1

公开(公告)日：2014-11-13

申请号：US13964253

申请日：2013-08-12

Applicant: Electronics And Telecommunications Research Institute

Inventor： Woo Jin BYUN ,  Yong Heui CHO ,  Kwang Seon KIM ,  Min soo KANG ,  Bong-Su KIM

IPC: H04J11/00

CPC classification number: H04J15/00

Abstract: A signal transmission and reception method includes generating a plurality of electromagnetic wave mode functions having orthogonality in a spatial domain using a plurality of input signals, synthesizing and wirelessly transmitting the generated electromagnetic wave mode functions, receiving a revolution division multiplexing electromagnetic wave having characteristics of phase rotation in directions of an azimuth angle and an elevation angle, and discriminating the electromagnetic wave mode functions through an orthogonal operation, and restoring an output signal through correction of the discriminated electromagnetic wave mode functions.

Abstract translation: 信号发送接收方法包括使用多个输入信号在空间域中生成具有正交性的多个电磁波模式功能，合成并无线地发送所生成的电磁波模式功能，接收具有相位特性的旋转分复用电磁波 方位角和仰角的方向的旋转，以及通过正交操作来识别电磁波模式功能，以及通过校正所识别的电磁波模式功能来恢复输出信号。