-
1.发明授权公开(公告)号：US10418898B2
公开(公告)日：2019-09-17
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
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.
-
2.发明授权Loop filter for data converter in wireless communication system and method of implementing corresponding loop filter 有权无线通信系统中数据转换器的环路滤波器及实现相应环路滤波器的方法公开(公告)号：US09496890B2
公开(公告)日：2016-11-15
申请号：US15057793
申请日：2016-03-01
Inventor： Young Kyun Cho , Bong Hyuk Park , Jung Hoon Oh
CPC classification number: H03M3/44 , G06G7/18 , H03H11/0433 , H03H11/1252 , H03H11/126 , H03M3/438 , H03M3/458
Abstract: Provided is a loop filter for a data converter in a wireless communication system that improves both an anti-aliasing filtering characteristic and a power consumption characteristic, the loop filter including first and third resistors sequentially connected to an input end, fourth and second resistors sequentially connected to between an inverting output end and ground, a first capacitor connected to between another end of the first resistor and one end of the fourth resistor, a second capacitor connected to between the one end of the fourth resistor and the output end, a third capacitor connected to between another end of the third resistor and the output end, and an operational amplifier, wherein an inverting end of the operational amplifier is connected to the other end of the first resistor and a non-inverting end of the operational amplifier is connected to ground to output an operational amplifier response to the output end.
Abstract translation: 提供了一种用于无线通信系统中的数据转换器的环路滤波器，其改进了抗混叠滤波特性和功耗特性，该环路滤波器包括顺序地连接到输入端的第一和第三电阻器，第四和第二电阻器顺序地连接 连接到所述第一电阻器的另一端和所述第四电阻器的一端之间的第一电容器，连接到所述第四电阻器的一端和所述输出端之间的第二电容器，第三电容器 连接到第三电阻器的另一端和输出端之间，以及运算放大器，其中运算放大器的反相端连接到第一电阻器的另一端，并且运算放大器的非反相端连接到 接地以输出对输出端的运算放大器响应。
-
公开(公告)号：US08791685B2
公开(公告)日：2014-07-29
申请号：US14098989
申请日：2013-12-06
Inventor： Young Kyun Cho , Jae Ho Jung , Kwang Chun Lee
Abstract: Disclosed is a bandgap reference voltage generator insensitive to changes of process, voltage, and temperature. A bandgap reference voltage generator may detect current having characteristic of CTAT and current having characteristic of PTAT which flow in a current compensation part included in an amplification part, and provide body voltage to one of two input transistors included in the amplification part in response to ratio of the two currents when the ratio is different from the preconfigured reference value. Thus, characteristics according to changes of parameters of elements and change of offset of the amplification part due to changes of PVT may be enhanced, and a characteristic of power supply rejection ratio (PSRR) may be enhanced.
Abstract translation: 公开了对工艺，电压和温度的变化不敏感的带隙参考电压发生器。 带隙参考电压发生器可以检测具有CTAT特性的电流和具有在包括在放大部分中的电流补偿部分中流动的PTAT特性的电流，并且响应于比率而向包括在放大部分中的两个输入晶体管之一提供体电压 当该比率与预配置的参考值不同时，两个电流。 因此，可以增加由元件参数的变化引起的特性和由于PVT变化引起的放大部分偏移的变化，并且可以提高电源抑制比（PSRR）的特性。
-
4.发明授权Apparatus and method for calibrating time constant, and low pass delta sigma modulation apparatus including the same 失效用于校准时间常数的装置和方法，以及包括该常数的低通量ΔΣ调制装置公开(公告)号：US08749414B2
公开(公告)日：2014-06-10
申请号：US13715056
申请日：2012-12-14
Inventor： Young Kyun Cho , Bong Hyuk Park , Jae Ho Jung
Abstract: A time constant calibration apparatus of a low pass delta sigma modulation apparatus calibrates a time constant of an integrator using a resistor and a capacitor, and the time constant calibration apparatus generates a reference voltage by flowing a reference current to a reference resistor, converts the reference voltage to a digital signal, and varies a value of a resistor of an integrator and a value of a capacitor from the digital signal.
Abstract translation: 低通量ΔΣ调制装置的时间常数校准装置使用电阻器和电容器校准积分器的时间常数，并且时间常数校准装置通过将参考电流流向参考电阻器来产生参考电压，转换参考电压 电压到数字信号，并且从数字信号改变积分器的电阻器的值和电容器的值。
-
公开(公告)号：US11509352B2
公开(公告)日：2022-11-22
申请号：US16548615
申请日：2019-08-22
Inventor： Young Kyun Cho , Jung Nam Lee
Abstract: A method for transmitting signals using a high frequency based integrated circuit beamforming antenna is disclosed. The method may comprise transferring an output signal of a radio frequency (RF) module to an RF transceiving unit; transferring an output signal of the RF transceiving unit to a signal converting unit including a feeding pillar; and transferring a wave signal from the signal converting unit to a traveling wave antenna unit, and the feeding pillar may convert the output signal of the RF transceiving unit to the wave signal.
-
Patent Agency Ranking
公开(公告)号：US11038265B2
公开(公告)日：2021-06-15
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
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.
-
公开(公告)号：US10461725B2
公开(公告)日：2019-10-29
申请号：US15622513
申请日：2017-06-14
Inventor： Young Kyun Cho , Cheol Ho Kim , Bong Hyuk Park , Kwangchun Lee , Jae Ho Jung , Seok Bong Hyun
Abstract: A voltage comparator comparing a voltage of a first input signal and a voltage of a second input signal is provided. The voltage comparator includes: a first switch pair transmitting, respectively, the first input signal and the second input signal to a control terminal of a first transistor and a control terminal of a second transistor in response to a clock signal; a second switch pair connecting a first terminal and a second terminal of the first transistor and connecting a first terminal and a second terminal of the second transistor in response to at least one of the clock signal and a reset signal; and a first reset switch connecting the control terminal of the first transistor and the control terminal of the second transistor in response to the reset signal.
-
公开(公告)号：US09014281B2
公开(公告)日：2015-04-21
申请号：US14011268
申请日：2013-08-27
Inventor： Young Kyun Cho , Sung Jun Lee , Seung Hyun Jang , Bong Hyuk Park , Jae Ho Jung , Kwang Chun Lee
CPC classification number: H04L25/4902 , H03K7/08 , H03M3/504 , H04B14/062
Abstract: A delta-sigma modulator and a transmitter apparatus including the same are disclosed. The delta-sigma modulator includes a first integrator, a second integrator, a first comparator configured to compare an output signal of the second integrator and a reference signal, and output a first comparison signal, a second comparator configured to compare the output signal of the second integrator and the reference signal, and output a second comparison signal, a first DAC configured to output the first signal corresponding to the first comparison signal and the second comparison signal, a second DAC configured to output the second signal corresponding to the first comparison signal and the second comparison signal, a delayer configured to generate a delayed signal that delays the first comparison signal and the second comparison signal by a predetermined time, and an output DAC configured to generate an output signal having a multi-level corresponding to the delayed signal.
Abstract translation: 公开了一种Δ-Σ调制器及其发射机装置。 Δ-Σ调制器包括第一积分器，第二积分器，被配置为比较第二积分器的输出信号和参考信号的第一比较器，并输出第一比较信号;第二比较器，被配置为比较第二积分器的输出信号 第二积分器和参考信号，并输出第二比较信号，第一DAC被配置为输出对应于第一比较信号和第二比较信号的第一信号;第二DAC，被配置为输出对应于第一比较信号的第二信号 和第二比较信号，延迟器，被配置为产生将第一比较信号和第二比较信号延迟预定时间的延迟信号;以及输出DAC，被配置为产生具有与延迟信号相对应的多电平的输出信号 。
-
公开(公告)号：US10147583B2
公开(公告)日：2018-12-04
申请号：US15195214
申请日：2016-06-28
Inventor： Young Kyun Cho , Cheol Ho Kim , Bong Hyuk Park
IPC: H01J37/147 , H01Q19/06 , H01J37/24
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.
-
公开(公告)号：US10063252B2
公开(公告)日：2018-08-28
申请号：US15868786
申请日：2018-01-11
Inventor： Young Kyun Cho , Bong Hyuk Park
CPC classification number: H03M3/438 , H03H11/1204 , H03H11/126 , H03H11/1291 , H03M3/394 , H03M3/422 , H03M3/458
Abstract: A delta-sigma modulator may comprise a loop filter for integrating and outputting a difference between an input signal and an analog signal; a quantizer for quantizing and outputting a signal output from the loop filter; and a digital-to-analog converter (DAC) for outputting the analog signal by digital-to-analog converting a signal output from the quantizer. Also, the loop filter may comprise an operational amplifier; and a circuit including at least one capacitor, at least one resistor, and at least one switch which are connected to the operational amplifier. Also, signal transfer characteristics of the loop filter satisfy a third-order transfer function or a second-order transfer function by turning on or off the at least one switch.
-
-
-
-
-
-
-
-
-
Search Results
20
records
(took 0.02 seconds)
