公开(公告)号：US20150171976A1

公开(公告)日：2015-06-18

申请号：US14217714

申请日：2014-03-18

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang Tae KIM ,  Haeng Sook RO ,  Gwangmoon PARK ,  Seong Yun LEE ,  Mi-Kyung SUK ,  Yong-Seok CHOI

IPC: H04B17/00 ,  H04B1/16

CPC classification number: H04B17/12 ,  H04B1/1027

Abstract: A wideband RF receiver includes a dual mode antenna configured to drive in an active antenna mode when a bias power is supplied thereto and to drive in a passive antenna mode when a power is not supplied thereto; and a hybrid interface apparatus configured to supply the bias power to the dual mode antenna and configured to provide a control signal that enables the dual mode antenna to drive in the active antenna mode or the passive antenna mode. Further, the wideband RF receiver includes a radio measuring and receiving apparatus configured to measure a signal level of an input value that the hybrid interface apparatus outputs the control signal.

Abstract translation: 宽带RF接收机包括双模式天线，其配置为当向其提供偏置功率时以有源天线模式驱动并且当不向其提供电力时以无源天线模式驱动; 以及混合接口装置，被配置为将所述偏置功率提供给所述双模式天线，并且被配置为提供使所述双模式天线能够以所述有源天线模式或所述无源天线模式驱动的控制信号。 此外，宽带RF接收机包括被配置为测量混合接口装置输出控制信号的输入值的信号电平的无线电测量和接收装置。

公开(公告)号：US20210280977A1

公开(公告)日：2021-09-09

申请号：US17132195

申请日：2020-12-23

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Haeng Sook RO ,  Kanghee KIM ,  Gwangmoon PARK ,  Soo-Ho SOHN ,  Ki Cheol TAE

IPC: H01Q9/06 ,  H01Q1/26 ,  H01Q1/38 ,  H01Q1/24 ,  H01Q21/24

Abstract: A dipole antenna fed by a planar balun includes a first radiation element and a second radiation element respectively corresponding to poles of the dipole antenna, at least one dipole support column configured to connect the first radiation element and the second radiation element and to fix a gap between the first radiation element and the second radiation element, a planar balun connected to the first radiation element and the second radiation element and configured to feed the first radiation element and the second radiation element, and a balun housing coupled to the dipole support column and enclosing the planar balun.

公开(公告)号：US20150071310A1

公开(公告)日：2015-03-12

申请号：US14211812

申请日：2014-03-14

Applicant: Electronics and Telecommunications Research Institute

Inventor： Sang Tae KIM ,  Gwangmoon PARK ,  Seong Yun LEE ,  Haeng Sook RO ,  Mi-Kyung SUK ,  Yong-Seok CHOI

IPC: H04L7/00

CPC classification number: H04B7/0874 ,  H04B7/086

Abstract: A radio measurement apparatus comprising: an array antennal selection unit selecting array antennas corresponding to received signals; a reference path selection unit selecting a reference array antenna; a signal processing unit selecting a reference antenna channel through analysis of signal characteristics measured through two reception channels; a sequential channel multiplex unit determining sequentially inputting received signals of remaining array antennas to output the sequentially input signals to a receiver; and a correction signal input unit compensating amplitude and phase characteristics of the respective reception channels.

Abstract translation: 一种无线电测量装置，包括：阵列天线选择单元，选择与接收信号相对应的阵列天线; 参考路径选择单元，选择参考阵列天线; 信号处理单元，通过分析通过两个接收信道测量的信号特性来选择参考天线信道; 顺序信道多路复用单元确定顺序输入剩余阵列天线的接收信号，以将顺序输入的信号输出到接收机; 以及校正信号输入单元，用于补偿各个接收信道的幅度和相位特性。

公开(公告)号：US20140044266A1

公开(公告)日：2014-02-13

申请号：US13922643

申请日：2013-06-20

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Sang Tae KIM ,  Yong Seok CHOI ,  Gwang Moon PARK ,  Seong Yun LEE ,  Haeng Sook RO ,  Mi Kyung SUK

IPC: G10K11/00

CPC classification number: G10K11/002 ,  H03D7/165

Abstract: The present invention provides a real-time noise reduction apparatus for a radio monitoring system, including a dual channel digitizing unit configured to convert signals, subject to frequency down-conversion and inputted to two channels, into digital signals and a Digital Signal Processor (DSP) configured to reduce noise from time sample regions of the signals, received from the dual channel digitizing unit, in a time domain using a correlation method between samples through the delayed feedback means.

Abstract translation: 本发明提供了一种用于无线电监测系统的实时降噪装置，包括双通道数字化单元，其被配置为将经过降频转换并被输入到两个通道的信号转换为数字信号，以及数字信号处理器 ），其被配置为使用通过所述延迟反馈装置的样本之间的相关方法在时域中从所述双通道数字化单元接收的信号的时间采样区域减少噪声。

公开(公告)号：US20230066195A1

公开(公告)日：2023-03-02

申请号：US17710625

申请日：2022-03-31

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Byung Chan KIM ,  Kang Hee KIM ,  Haeng Sook RO ,  Gwang Moon PARK ,  Soo Ho SOHN ,  Ki Cheol TAE

IPC: H04L27/00

Abstract: In the present invention, in classifying modulation types of a plurality of modulation signals by using a classifier (an artificial neural network model based on machine learning), the classifier may classify the modulation types of the modulation signals by using pieces of I/Q data, sampled with one sampling frequency, as input data, and thus, may quickly classify the modulation signals.

公开(公告)号：US20220381867A1

公开(公告)日：2022-12-01

申请号：US17691593

申请日：2022-03-10

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Kang Hee KIM ,  Byung Chan KIM ,  Haeng Sook RO ,  Gwang Moon PARK ,  Soo Ho SOHN ,  Ki Cheol TAE

IPC: G01S3/42 ,  G01S3/74 ,  G01S3/04

Abstract: A directive direction finding apparatus may comprise: a directivity-enabled antenna array in which a constituent antenna or antenna subarray has directivity in the same direction; an RF/IF receiver connected to the directivity-enabled antenna array; a digital receiver connected to the RF/IF receiver; a direction finder connected to the digital receiver; a directivity control unit to control an operation of the directivity-enabled antenna array; and a transport/control interface connected to the direction finder and to manage control and operation of the directivity-enabled antenna array, the RF/IF receiver, the digital receiver, the direction finder and the directive control unit.

公开(公告)号：US20170141482A1

公开(公告)日：2017-05-18

申请号：US15209951

申请日：2016-07-14

Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE

Inventor： Gwang Moon PARK ,  Haeng Sook RO ,  Sang In CHO ,  Yong Seok CHOI

IPC: H01Q21/24 ,  H01Q1/24

CPC classification number: H01Q21/24 ,  H01Q1/24 ,  H01Q9/145 ,  H01Q9/16 ,  H01Q21/20 ,  H01Q21/30

Abstract: Disclosed are a variable antenna and an apparatus for detecting a radio signal. The variable antenna includes: a first receiving unit including at least one liquid metal antenna element; a second receiving unit including at least one liquid metal antenna element having a length different from a length of the first receiving unit; and a gain control unit configured to electrically adjust lengths of the liquid metal antenna elements for one of the first receiving unit and the second receiving unit according to the frequency of a received signal, wherein each antenna array realized by the liquid metal antenna elements of the first receiving unit and the second receiving unit is arranged in a single bay.