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公开(公告)号：US11804874B2
公开(公告)日：2023-10-31
申请号：US17734286
申请日：2022-05-02
Inventor： In Kui Cho , Jang Yeol Kim , Jung Hoon Oh , Jae Woo Lee , Jae Ho Lee , Hyun Joon Lee , Sang Won Kim , Seong Min Kim , Jung Ick Moon , Woo Jin Byun , Je Hoon Yun
IPC: H04B5/00
CPC classification number: H04B5/0031 , H04B5/0081 , H04B5/0087
Abstract: An antenna device for magnetic field communication may include: a first coil; a second coil; a third coil; a first capacitor connected to a 1-1 terminal of the first coil; a second capacitor connected to a 2-1 terminal of the second coil; a third capacitor connected to a 3-1 terminal of the third coil; and an input port including a first input terminal connected to a 1-2 terminal of the first coil, a 2-2 terminal of the second coil, and a 3-2 terminal of the third coil, and a second input terminal connected to the first capacitor, the second capacitor, and the third capacitor.
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公开(公告)号：US09503204B2
公开(公告)日：2016-11-22
申请号：US14976496
申请日：2015-12-21
Inventor： Kwang Seon Kim , Min Soo Kang , Bong Su Kim , Jung Bin Kim , Woo Jin Byun , Mi Kyung Suk
Abstract: Provided is an apparatus for calibrating a transmission path, the apparatus including one or more couplers to separate, by one or more paths, one or more input signals input from an input terminal of one or more antennas, a power detector to detect amplitude of one or more path signals separated by the one or more paths, a power distributor to distribute any one of the one or more path signals, one or more mixers to mix a distribution signal distributed by the power distributor with the one or more path signals, a low-pass filter to remove a high-frequency component of a mixed signal mixed by the one or more mixers; and a voltage detector to detect amplitude of one or more filter pass signals with the high-frequency component removed.
Abstract translation: 提供了一种用于校准传输路径的装置，该装置包括一个或多个耦合器，以通过一个或多个路径分离从一个或多个天线的输入端子输入的一个或多个输入信号，功率检测器，用于检测一个或多个天线的幅度 或更多路径信号，一个或多个路径分离的路径信号;功率分配器，用于分配所述一个或多个路径信号中的任何一个，一个或多个混频器，以将由所述分配器分配的分配信号与所述一个或多个路径信号混合; 低通滤波器，以去除由一个或多个混频器混合的混合信号的高频分量; 以及电压检测器，用于检测去除了高频分量的一个或多个滤波器通过信号的幅度。
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公开(公告)号：US09246359B2
公开(公告)日：2016-01-26
申请号：US13773873
申请日：2013-02-22
Inventor： Jung Ick Moon , In Kui Cho , Seong-Min Kim , Je Hoon Yun , Woo Jin Byun
CPC classification number: H02J50/00 , H02J17/00 , H02J50/12 , H04B5/0037 , H04B5/0087
Abstract: Disclosed is an apparatus for harvesting leakage energy. The apparatus for harvesting leakage energy includes: an energy harvesting unit configured to harvest energy leaked while energy radiated from a transmitting unit of an energy transmitting apparatus is transmitted to a receiving unit of an energy receiving apparatus; and a harvesting circuit module configured to supply energy harvested by the energy harvesting unit to a load. In accordance with the embodiment of the present invention, energy efficiency of overall system can be increased by harvesting the leakage energy without affecting performance of a wireless power transmission system.
Abstract translation: 公开了一种用于收获泄漏能量的装置。 用于收集泄漏能量的装置包括：能量收集单元，被配置为收集从能量发射装置的发射单元辐射的能量被发射到能量接收装置的接收单元的泄露的能量; 以及收集电路模块，其被配置为将能量收集单元收集的能量提供给负载。 根据本发明的实施例，可以通过收集泄漏能量而不影响无线电力传输系统的性能来提高整个系统的能量效率。
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公开(公告)号：US12066526B2
公开(公告)日：2024-08-20
申请号：US17557831
申请日：2021-12-21
Inventor： Hyung Ju Kim , Sung Jin Yoo , Byung Jang Jeong , Woo Jin Byun , In Kui Cho
CPC classification number: G01S13/882 , G01S7/418 , G01S13/003 , G01S13/424
Abstract: A method for calculating an altitude of a target through an apparatus for calculating an altitude of the target, which comprises a plurality of MIMO radar virtual antennas, may comprise: receiving electromagnetic waves reflected from the target through a pair of virtual antennas classified into an upper antenna and a lower antenna and alternately arranged in two columns linearly; obtaining range information and phase information of the target from the pair of virtual antennas by analyzing the electromagnetic waves; and calculating altitude information of the target from position information of the pair of virtual antennas, and the range information and the phase information.
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公开(公告)号：US11796631B2
公开(公告)日：2023-10-24
申请号：US16924739
申请日：2020-07-09
Inventor： Byung Jang Jeong , Woo Jin Byun
Abstract: A method of transmitting and receiving an orthogonal frequency division multiplexing (OFDM) signal for radio detection and ranging (radar) applications, and apparatuses performing the method are disclosed. The method includes receiving an OFDM signal in which a cyclic prefix (CP) is not included and converting the received OFDM signal to a received discrete time-domain signal through an analog-to-digital converter (ADC), selecting sub-carrier symbols to be input to a fast Fourier transform (FFT) from among all sub-carrier symbols included in the received discrete time-domain signal by performing windowing on the received discrete time-domain signal by a window that is based on an estimated value of a maximum delay that occurs potentially in a channel, converting the received discrete time-domain signal to a received frequency-domain signal by inputting the selected sub-carrier symbols to the FFT, and performing channel estimation based on the received frequency-domain signal.
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Patent Agency Ranking
公开(公告)号：US10056700B2
公开(公告)日：2018-08-21
申请号：US14724320
申请日：2015-05-28
Applicant: Electronics and Telecommunications Research Institute , INDUSTRY-ACADEMIC COOPERATION FOUNDATION, CHOSUN UNIVERSITY
Inventor： Kwang Seon Kim , Sun Soo Oh , Woo Jin Byun , Min Soo Kang , Bong Su Kim
CPC classification number: H01Q21/065
Abstract: Disclosed is a circular array antenna. The circular array antenna includes: an input/output unit receiving electromagnetic waves from a transmitter and distributing the received electromagnetic waves to the antenna; a primary feeder connected with the input/output unit and placed at the center of the circular array antenna; a plurality of secondary feeders radially connected to the primary feeder; a plurality of patch units connected to the respective secondary feeders to generate an electric field radially; and a plurality of length controllers formed at terminals of the respective secondary feeders in a direction to extend the lengths of the respective secondary feeders, of which the lengths are controllable.
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公开(公告)号：US20160191177A1
公开(公告)日：2016-06-30
申请号：US14976496
申请日：2015-12-21
Inventor： Kwang Seon Kim , Min Soo Kang , Bong Su Kim , Jung Bin Kim , Woo Jin Byun , Mi Kyung Suk
Abstract: Provided is an apparatus for calibrating a transmission path, the apparatus including one or more couplers to separate, by one or more paths, one or more input signals input from an input terminal of one or more antennas, a power detector to detect amplitude of one or more path signals separated by the one or more paths, a power distributor to distribute any one of the one or more path signals, one or more mixers to mix a distribution signal distributed by the power distributor with the one or more path signals, a low-pass filter to remove a high-frequency component of a mixed signal mixed by the one or more mixers; and a voltage detector to detect amplitude of one or more filter pass signals with the high-frequency component removed.
Abstract translation: 提供了一种用于校准传输路径的装置，该装置包括一个或多个耦合器，以通过一个或多个路径分离从一个或多个天线的输入端子输入的一个或多个输入信号，功率检测器，用于检测一个或多个天线的幅度 或更多路径信号，一个或多个路径分离的路径信号;功率分配器，用于分配所述一个或多个路径信号中的任何一个，一个或多个混频器，以将由所述分配器分配的分配信号与所述一个或多个路径信号混合; 低通滤波器，以去除由一个或多个混频器混合的混合信号的高频分量; 以及电压检测器，用于检测去除了高频分量的一个或多个滤波器通过信号的幅度。
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公开(公告)号：US09106495B2
公开(公告)日：2015-08-11
申请号：US14547243
申请日：2014-11-19
Inventor： Kwang Seon Kim , Min Soo Kang , Bong Su Kim , Woo Jin Byun , Jong Soo Lim , Myung Sun Song , Jae Ick Choi
CPC classification number: H04L25/0204 , H04B7/0413 , H04B7/0604 , H04L1/0002 , H04L1/0011 , H04L1/06 , H04L5/0023 , H04L25/00 , H04L27/0008 , H04L27/34
Abstract: Disclosed are a wireless communication method of improving frequency efficiency based on a channel function in a wireless communication system and an apparatus thereof. The wireless communication system using a digital modulation scheme, includes: a transmitting apparatus which modulates a data signal to generate a modulation symbol, generates a channel symbol function corresponding to the modulation symbol, combines the modulation symbol with the channel symbol function to generate a transmission symbol to transmit the generated transmission symbol through a transmission antenna; and a receiving apparatus which receives the transmission symbol through a reception antenna, estimates a channel symbol function included in the transmission symbol, and extracts the data signal based on the modulation symbol included in the transmission symbol.
Abstract translation: 公开了一种基于无线通信系统中的信道功能提高频率效率的无线通信方法及其装置。 使用数字调制方式的无线通信系统包括：调制数据信号以生成调制符号的发送装置，生成与调制符号对应的信道符号功能，将调制符号与信道符号功能组合，生成发送 符号，用于通过发送天线发送生成的发送符号; 以及通过接收天线接收发送符号的接收装置，估计包含在发送符号中的信道符号函数，并且根据包含在发送符号中的调制符号提取数据信号。
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公开(公告)号：US11567184B2
公开(公告)日：2023-01-31
申请号：US16550086
申请日：2019-08-23
Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE , PUKYONG NATIONAL UNIVERSITY INDUSTRY-UNIVERSITY COOPERATION FOUNDATION
Inventor： Sung Hyun Hwang , Woo Jin Byun , Sung Jin Yoo , Jae Hyun Park
IPC: G01S13/58 , G01S13/93 , G01S7/35 , G01S13/931
Abstract: An operation method performed by an apparatus for detecting multiple targets may comprise transmitting first signals using Mt transmit antennas included in the apparatus; receiving the first signals reflected by the multiple targets through Mr receive antennas included in the apparatus; generating a first function for estimating a velocity and an azimuth of each of the multiple targets using the first signals and the reflected first signals; estimating a velocity and an azimuth that maximize a result of the first function as a velocity and an azimuth of a first target closest to the apparatus among the multiple targets; generating a second function by cancelling interference caused by the first target from the first function; and estimating a velocity and an azimuth that maximize a result of the second function as a velocity and an azimuth of a second target among the multiple targets.
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公开(公告)号：US10911136B2
公开(公告)日：2021-02-02
申请号：US16203394
申请日：2018-11-28
Applicant: Electronics and Telecommunications Research Institute , FOUNDATION FOR RESEARCH AND BUSINESS, SEOUL NATIONAL UNIVERSITY OF SCIENCE AND TECHNOLOGY
Inventor： Byung Jang Jeong , Woo Jin Byun , Ji-Hoon Yun , Jae-Han Lim , Wisnu Murti
IPC: H04B7/22 , H04B7/0456 , H04L1/00 , H04B1/00 , H04B7/08
Abstract: Disclosed are a communication method and communication apparatus using an ambient backscatter communication. A transmission apparatus may include generating a plurality of bitsets by fragmenting data based on a predetermined bitset length, mapping the plurality of bitsets to a plurality of switching patterns based on a data size, and controlling a reflection of a background radio frequency (RF) signal based on a corresponding mapped switching pattern, a total number of the plurality of switching patterns may be determined based on the bitset length, and each of the plurality of switching patterns may have a different length.
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