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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：US10804862B2
公开(公告)日：2020-10-13
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.
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公开(公告)号：US10193718B2
公开(公告)日：2019-01-29
申请号：US15870826
申请日：2018-01-12
Inventor： Sun Woo Kong , Bong Hyuk Park , Moon Sik Lee , Hui Dong Lee
Abstract: A data modulation apparatus may comprise a S2D conversion part including a first amplifier operating based on a carrier wave signal and two transformers receiving an output signal of the first amplifier; a first switch part transferring status of input data to the first amplifier based on the input data; a differential amplification part receiving output signals of the S2D conversion part and amplifying the output signals of the S2D conversion part; a D2S conversion part receiving output signals of the differential amplification part and performing modulation on the output signals by converting the output signals to a single signal; and a second switch part transferring the output signals of the differential amplification part to the D2S conversion part based on the input data. Here, the first switch part and the second switch part may be alternately turned on and off.
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4.发明授权公开(公告)号：US09106128B2
公开(公告)日：2015-08-11
申请号：US14311417
申请日：2014-06-23
Inventor： Hui Dong Lee , Jae Ho Jung , Kwangchun Lee
CPC classification number: H02M3/07 , H03L7/0895 , H03L7/0896 , H03L7/0898
Abstract: Provided is a charge pump circuit having a current mirror structure, including a first voltage controller including a plurality of first resistors and a plurality of first switches, and in response to a switching control signal corresponding to a bias current, driving the plurality of first switches to allow a current path passing through the plurality of first resistors to bypass, thereby controlling a voltage level of an output end, a second voltage controller including a plurality of second resistors and a plurality of second switches, and in response to the switching control signal, driving the plurality of second switches to allow a current path passing through the plurality of second resistors to bypass, thereby controlling a voltage level of an output end to correspond to the voltage of the output end of the first voltage controller.
Abstract translation: 提供了具有电流镜结构的电荷泵电路，包括包括多个第一电阻器和多个第一开关的第一电压控制器，并且响应于与偏置电流相对应的开关控制信号，驱动多个第一开关 允许通过多个第一电阻器的电流路径旁路，从而控制输出端的电压电平，包括多个第二电阻器和多个第二开关的第二电压控制器，并且响应于开关控制信号 驱动所述多个第二开关以允许通过所述多个第二电阻器的电流路径旁路，由此控制输出端的电压电平对应于所述第一电压控制器的输出端的电压。
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公开(公告)号：US11770103B2
公开(公告)日：2023-09-26
申请号：US17665405
申请日：2022-02-04
Inventor： Sunwoo Kong , Bong Hyuk Park , Hui Dong Lee , Seunghyun Jang , Seok Bong Hyun
CPC classification number: H03D7/1441 , H03D3/009 , H03D7/1466 , H04B1/18 , H04B1/40
Abstract: A method and apparatus for input matching of a passive mixer are disclosed. The passive mixer includes a differential transistor pair including a first transistor and a second transistor, a first inductor having one end connected to the first transistor and another end connected to a ground, a second inductor having one end connected to the second transistor and another end connected to a ground, and a third inductor having one end for receiving a radio frequency (RF) signal and another end connected to a ground.
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Patent Agency Ranking
公开(公告)号：US10432164B2
公开(公告)日：2019-10-01
申请号：US15835148
申请日：2017-12-07
Inventor： Sun Woo Kong , Cheol Ho Kim , Bong Hyuk Park , Hui Dong Lee
IPC: H03H7/38 , H03H7/40 , H03F3/19 , H03F1/56 , H01F27/29 , H03H11/32 , H03H7/09 , H03F3/193 , 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.
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公开(公告)号：US08841951B2
公开(公告)日：2014-09-23
申请号：US14067487
申请日：2013-10-30
Inventor： Hui Dong Lee , Jae Ho Jung , Kwang Chun Lee
IPC: H03K3/017
CPC classification number: H03K3/017 , H03K5/1565
Abstract: Disclosed is an apparatus for controlling a duty ratio of a signal that includes a clock control unit configured to generate a plurality of control signals based on an input signal, a half-cycle generation unit configured to generate a multiplied signal by use of the input signal and a delay signal that is obtained by delaying the input signal based on a delay control voltage, and divide the multiplied signal to generate a first division signal and a second division signal that are in inverse relation to each other, a comparator unit configured to compare a pulse width of the first division signal with a pulse width of the second division signal based on the control signal provided by the clock control unit, and output a delay control signal corresponding to a result of the comparison, and a control voltage generation unit configured to output a delay control voltage.
Abstract translation: 公开了一种用于控制信号的占空比的装置，其包括被配置为基于输入信号生成多个控制信号的时钟控制单元，半周生成单元，被配置为通过使用输入信号生成相乘的信号 以及延迟信号，其通过基于延迟控制电压延迟所述输入信号而获得，并且将所述相乘的信号除以产生彼此成反比的第一除法信号和第二除法信号，所述比较器单元被配置为比较 基于由时钟控制单元提供的控制信号的具有第二分频信号的脉冲宽度的第一分频信号的脉冲宽度，并输出与比较结果相对应的延迟控制信号，以及控制电压生成单元配置 输出延迟控制电压。
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公开(公告)号：US12132266B2
公开(公告)日：2024-10-29
申请号：US17871608
申请日：2022-07-22
Inventor： Bong Hyuk Park , Sunwoo Kong , Hui Dong Lee , Seunghyun Jang , Seok Bong Hyun
CPC classification number: H01Q3/28 , H01Q9/16 , H01Q21/062
Abstract: Provided is a terahertz wideband antenna and a method for designing the same. According to various embodiments, the wideband antenna used for mobile communication in the terahertz wave communication band may include an antenna board including a first surface and a second surface opposite to the first surface, and a plurality of dipole antennas arranged on the antenna board, each of the plurality of dipole antennas may include a feeder disposed on the first surface and a radiator disposed on the second surface and physically spaced apart from the feeder, the feeder may be wire-bonded to a corresponding channel of a plurality of channels of a beam former, and the radiator may be coupled to the feeder to receive a signal from the feeder.
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公开(公告)号：US10079579B2
公开(公告)日：2018-09-18
申请号：US15487905
申请日：2017-04-14
Inventor： Sunwoo Kong , Bong Hyuk Park , Moon-Sik Lee , Hui Dong Lee
CPC classification number: H03F1/56 , H03F1/347 , H03F1/565 , H03F3/193 , H03F3/195 , H03F3/265 , H03F3/45179 , H03F2200/318 , H03F2200/391 , H03F2200/399 , H03F2200/411 , H03F2200/451 , H03F2200/534 , H03F2200/537
Abstract: A high frequency amplifier circuit includes a transistor including a drain, a gate, and a source, an inductance-capacitor (LC) tank connected to the drain, and a transformer connected to the gate and the source.
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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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