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公开(公告)号：US10033562B2
公开(公告)日：2018-07-24
申请号：US15460537
申请日：2017-03-16
Inventor： Seung Hyun Jang , Bong Hyuk Park , Hui Dong Lee
Abstract: An envelope signal time delay adjustment apparatus includes a negative group delay unit for converting an envelope signal input from a signal generator into an envelope signal having a group delay of a negative value whose frequency increases from a predetermined frequency band; an envelope-tracking modulator for power-amplifying and outputting the envelope signal output from the negative group delay unit; and a frequency limiting unit for limiting a bandwidth of the envelope-tracking modulator to be lower than an original bandwidth of the envelope-tracking modulator.
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公开(公告)号：US20170244458A1
公开(公告)日：2017-08-24
申请号：US15424996
申请日：2017-02-06
Inventor： Juyul Lee , Myung Don Kim , Bong Hyuk Park , Jae Joon Park
CPC classification number: H04B7/0617 , H04B7/0619 , H04L25/024 , H04W64/00
Abstract: A method and terminal for performing beamforming. The beamforming method of a terminal includes acquiring a beamforming signal, calculating a beamforming coefficient to correspond to locations of a transmitter and a receiver, based on the beamforming signal, acquiring sensor information of the terminal, estimating a channel parameter based on the sensor information, and determining a final beamforming coefficient based on the beamforming coefficient and the channel parameter.
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公开(公告)号：US09595980B2
公开(公告)日：2017-03-14
申请号：US14680838
申请日：2015-04-07
Inventor： Hui Dong Lee , Bong Hyuk Park , Moon-Sik Lee
CPC classification number: H04B1/0458 , H03B5/1212 , H03B5/1228 , H03B5/1243 , H03F3/24 , H04B2001/0408 , H04L25/0278
Abstract: Provided is an oscillation circuit including a voltage adjuster adjusting a magnitude of a power supply voltage according to a digital signal, an LC tank circuit connected between first and second nodes and generating a resonance signal on a basis of the magnitude adjusted power supply voltage, and a differential amplification circuit oscillating the resonance signal or modifying an oscillation state of the resonance signal to output first and second output voltage signals to the first and second nodes, respectively.
Abstract translation: 本发明提供一种振荡电路，其包括电压调节器，其根据数字信号调整电源电压的大小，连接在第一和第二节点之间的LC谐振电路，并且基于幅度调整的电源电压产生谐振信号;以及 差分放大电路振荡谐振信号或修改谐振信号的振荡状态，以将第一和第二输出电压信号分别输出到第一和第二节点。
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14.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。
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15.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。
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Patent Agency Ranking
公开(公告)号：US11990924B2
公开(公告)日：2024-05-21
申请号：US17577272
申请日：2022-01-17
Inventor： Hui Dong Lee , Sunwoo Kong , Bong Hyuk Park , Seunghyun Jang , Seok Bong Hyun
CPC classification number: H04B1/04 , H03F3/19 , H03F2200/216 , H03F2200/301
Abstract: A transformer-based amplifier, an operating method thereof, and devices including the same are disclosed. A millimeter wave amplifier includes a first transformer positioned on an input side of the millimeter wave amplifier, a second transformer positioned on an output side of the millimeter wave amplifier, and one or more of amplification stages positioned between the first transformer and the second transformer.
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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.
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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.
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19.发明授权公开(公告)号：US09729108B2
公开(公告)日：2017-08-08
申请号：US14996809
申请日：2016-01-15
Inventor： Seung Hyun Jang , Bong Hyuk Park , Nam Sik Ryu , Dong Seung Kwon
CPC classification number: H03F1/0222 , H03F3/19 , H03F3/245 , H03F2200/102 , H03F2200/451 , H03G3/30 , H03G3/3005
Abstract: Provided is an apparatus for adjusting an envelope signal delay in an envelope-tracking power amplifier. The apparatus includes: an envelope signal providing unit configured to provide an envelope signal; a variable negative group delay unit configured to adjust a group delay of the envelope signal received from the envelope signal providing unit and output the adjusted envelope signal; an envelope modulator configured to modulate the envelope signal outputted from the variable negative group delay unit; a group delay difference detecting unit configured to detect a group delay difference between the envelope signal which is outputted from the envelope signal providing unit and the envelope signal which is outputted from the envelope modulator; and a control signal generating unit configured to generate a control signal to control a group delay value of the variable negative group delay unit according to the group delay difference.
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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 。
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