-
公开(公告)号：US20190207567A1
公开(公告)日：2019-07-04
申请号：US16201754
申请日：2018-11-27
Inventor： Sun Woo KONG , Myung Don KIM , Cheol Ho KIM , Hui Dong LEE
Abstract: High frequency signal amplifier including balun is disclosed. The amplifier comprises an input terminal (Vin) through which the high frequency signal is input; a balun which is connected to the input terminal and outputs a first differential signal and a second differential signal based on the high frequency signal; a transistor (M) which is connected to the balun and outputs an amplified high frequency signal based on the first differential signal and the second differential signal; an output terminal which is connected to the transistor (M) and through which the amplified high frequency signal is acquired and the amplified high frequency signal is output. Therefore, performance of the amplifier can be enhanced.
-
公开(公告)号：US20200161754A1
公开(公告)日：2020-05-21
申请号：US16578203
申请日：2019-09-20
Inventor： Young Kyun CHO , Cheol Ho KIM , Bong Hyuk PARK , Kwangchun LEE , Seok Bong HYUN
IPC: H01Q1/52 , H01L29/868 , H01Q3/24 , H01Q25/00 , H01L23/66
Abstract: A semiconductor-based beamforming antenna is provided. The beamforming antenna includes: a waveguide having a silicon medium formed between metal and forming a waveguide path; at least one diode array disposed in the waveguide, the at least one diode array being driven according to an applied electrical signal to reflect an incident signal by acting as a conductive reflecting wall; a radiator connected to the waveguide and radiating a beam corresponding to a signal reflected by the at least one diode array or an incident signal; and a feeder for supplying an electrical signal into the waveguide.
-
Patent Agency Ranking
3.发明申请公开(公告)号：US20190028027A1
公开(公告)日：2019-01-24
申请号：US16030929
申请日：2018-07-10
Inventor： Young Kyun CHO , Myung Don KIM , Seok Bong HYUN , Bong Hyuk PARK , Cheol Ho KIM
CPC classification number: H02M3/157 , H02M1/08 , H02M1/143 , H02M1/44 , H02M3/158 , H02M2001/0009 , H02M2001/0032 , H02M2001/0054 , H03M3/392 , H03M3/438 , H03M3/454 , H03M3/458
Abstract: The present disclosure a switched-mode power supply using a reconfigurable delta-signal modulator (DSM). The switched-mode power supply comprises, a current sensing unit configured to determine an operation mode on the basis of a result of sensing a current of an output terminal; a compensator configured to output a compensation signal by amplifying a difference value between an output voltage and a reference voltage; a reconfigurable DSM configured to output a digital signal by noise-shaping the compensation signal; a power switch unit switched by the digital signal to output an output voltage; and an attenuator configured to supply a feedback voltage of the output voltage attenuated by a voltage divider to the compensator.
-
公开(公告)号：US20230214697A1
公开(公告)日：2023-07-06
申请号：US17938014
申请日：2022-10-04
Inventor： Cheol Ho KIM , Jung Hoon LEE
Abstract: The present invention relates to a device and method for incremental machine learning in a varying feature space. A device for machine learning according to the present invention includes a probability table generator configured to generate a probability table for a target feature of a dataset and a conditional probability table for each input feature of the dataset, based on the received dataset, a correlation extractor configured to extract relevance between the target feature and each of the input features and redundancy between the input features, based on the dataset, and a feature weight extraction and model generator configured to extract weights for each of the input features based on the relevance and the redundancy, and generate a prediction model based on the probability table for the target feature, the conditional probability table, and the weight.
-
公开(公告)号：US20170018400A1
公开(公告)日：2017-01-19
申请号：US15195214
申请日：2016-06-28
Inventor： Young Kyun CHO , Cheol Ho KIM , Bong Hyuk PARK
IPC: H01J37/24 , H01J37/147 , H01L29/868
CPC classification number: H01J37/243 , H01J37/147 , H01Q1/366 , H01Q19/12 , H01Q19/18
Abstract: Provided is a semiconductor plasma antenna apparatus. The apparatus includes: a cell array unit in which a plurality of PIN diode cells are arranged, and in which a cell pattern is formed by using a predefined PIN diode cell among the plurality of PIN diode cells; and a driver circuit unit configured to control a drive of the predefined PIN diode cell, wherein the driver circuit unit comprises: a direct-current conversion unit equipped with a DC-DC converter configured to drive a diode load of the cell pattern by applying an output voltage to a PIN diode cell corresponding to the cell patterns formed in the cell array unit; and a constant current controller configured to controlling a plasma concentration of the PIN diode cell by controlling a constant current for the diode load of the cell pattern.
Abstract translation: 提供了一种半导体等离子体天线装置。 该装置包括：单元阵列单元，其中布置有多个PIN二极管单元，并且其中通过在多个PIN二极管单元中使用预定义的PIN二极管单元形成单元图案; 以及驱动器电路单元，被配置为控制所述预定义PIN二极管单元的驱动，其中所述驱动器电路单元包括：配备有DC-DC转换器的直流转换单元，所述DC-DC转换器被配置为通过施加所述DC二极管单元驱动所述单元图案的二极管负载 对与形成在单元阵列单元中的单元图案对应的PIN二极管单元的输出电压; 以及恒流控制器，其被配置为通过控制所述电池图案的二极管负载的恒定电流来控制所述PIN二极管单元的等离子体浓度。
-
6.发明公开公开(公告)号：US20230214673A1
公开(公告)日：2023-07-06
申请号：US17938018
申请日：2022-10-04
Inventor： Jung Hoon LEE , Cheol Ho KIM
IPC: G06N5/02
CPC classification number: G06N5/022
Abstract: Provided are a preprocessing device and method for learning data of a classifier for improving stability and robustness of learning and prediction of a classifier in a varying feature space. The preprocessing device for learning data of a classifier according to the present invention includes a variable spatial information extractor configured to receive data for learning of the classifier, calculate an appearance frequency of each variable combination based on the data, and calculate a cumulative appearance frequency of each variable combination by cumulating and summing the appearance frequency of each variable combination, and a data preprocessor configured to generate a prediction variable—target variable frequency matrix based on the appearance frequencies of each variable combination, apply Laplace smoothing to the frequency matrix according to the cumulative appearance frequency to calculate a probability value of each variable combination, and provide the probability value of each variable combination to the classifier.
-
公开(公告)号：US20180167048A1
公开(公告)日：2018-06-14
申请号：US15835148
申请日：2017-12-07
Inventor： Sun Woo KONG , Cheol Ho KIM , Bong Hyuk PARK , Hui Dong LEE
CPC classification number: H03H7/40 , H01F27/29 , H03F1/565 , H03F3/19 , H03F3/193 , H03F2200/222 , H03F2200/492 , H03F2200/534 , H03F2200/541 , H03H7/09 , H03H7/38 , H03H11/32 , H04M1/76
Abstract: A matching circuit in a communication apparatus may comprise a first inductor disposed at a primary side of a transformer; a second inductor disposed at a secondary side of the transformer; and an impedance element connected to the first inductor and the second inductor. Also, a first terminal of the first inductor may be connected to an input terminal of the transformer, a second terminal of the first inductor may be connected to a common node connected to a ground, a first terminal of the second inductor may be connected to an output terminal of the transformer, a second terminal of the second inductor may be connected to the common node, a first terminal of the impedance element may be connected to the common node, and a second terminal of the impedance element may be connected to the ground.
-
-
-
-
-
-
Search Results
7
records
(took 0.017 seconds)
