公开(公告)号：US20060220736A1

公开(公告)日：2006-10-05

申请号：US11390203

申请日：2006-03-28

申请人： Youngho Cho ,  Bonkee Kim ,  Seong-Ho Park

发明人： Youngho Cho ,  Bonkee Kim ,  Seong-Ho Park

IPC分类号： H03F1/14

CPC分类号： H03F1/0277 ,  H03F1/223 ,  H03F3/45192 ,  H03F3/72 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2200/451 ,  H03F2203/45171 ,  H03F2203/45302 ,  H03F2203/45386 ,  H03F2203/45392 ,  H03F2203/45396 ,  H03F2203/45638 ,  H03F2203/7206 ,  H03F2203/7231 ,  H03F2203/7236 ,  H03G1/0088

摘要： A low noise amplifier (LNA), and more particularly, to a LNA capable of making gain variable is provided. The variable gain LNA comprises a selection unit comprising a first selection cell, a second selection cell, and a third selection cell for selectively transmitting an input signal to an amplification unit to select one of the first to third selection cells in accordance with the magnitude of the input signal and an amplification unit comprising a first amplification cell for amplifying a signal applied from the first selection cell to a first gain mode and outputting, a second amplification cell for amplifying a signal applied from the second selection cell to a second gain and outputting, and a third amplification cell for amplifying a signal applied from the third selection cell to a third gain mode and outputting.

摘要翻译： 提供了一种低噪声放大器（LNA），更具体地说，涉及一种能够提高增益的LNA。 可变增益LNA包括选择单元，其包括第一选择单元，第二选择单元和第三选择单元，用于根据第一至第三选择单元的大小选择性地将输入信号发送到放大单元以选择第一至第三选择单元之一 所述输入信号和放大单元包括用于将从所述第一选择单元施加的信号放大到第一增益模式的第一放大单元，并输出用于将从所述第二选择单元施加的信号放大到第二增益的第二放大单元， 以及第三放大单元，用于将从第三选择单元施加的信号放大到第三增益模式并输出。

公开(公告)号：US20060135104A1

公开(公告)日：2006-06-22

申请号：US11178474

申请日：2005-07-12

申请人： Junghwan Lee ,  Bonkee Kim

发明人： Junghwan Lee ,  Bonkee Kim

IPC分类号： H04B7/00 ,  H04B1/06

CPC分类号： H03G3/3068 ,  H04W52/52

摘要： Disclosed herein is an automatic gain control circuit including a power detector. The automatic gain control circuit includes a receiving unit for receiving an RF signal and a gain control unit for controlling the gain of the receiving unit. The receiving unit comprises an amplification part including a low noise amplifier and a gain amplifier for amplifying the RF signal, a mixer for down-converting and tuning the RF signal output from the gain amplifier, a low pass filter for receiving the down-converted signal from the mixer, and an intermediate frequency variable gain amplifier for amplifying the signal filtered by the low pass filter to an intermediate frequency signal. The gain control unit comprises a received signal strength indicator connected to the output port of the low pass filter to detect the level of the output signal of the low pass filter, a first comparator for comparing the output signal level detected by the received signal strength indicator with a reference signal level, a power detector for detecting the output signal level of the amplification part of the receiving unit, a second comparator for comparing the output signal level detected by the power detector with a reference signal level, and a gain controller for increasing, decreasing or holding the gain in response to the signals output from the first and second comparators.

公开(公告)号：US06882226B2

公开(公告)日：2005-04-19

申请号：US10438047

申请日：2003-05-15

申请人： Youngho Cho ,  Bo-Eun Kim ,  Bonkee Kim

发明人： Youngho Cho ,  Bo-Eun Kim ,  Bonkee Kim

IPC分类号： H03G1/00 ,  H03G3/30 ,  H03F1/36

CPC分类号： H03F1/342 ,  H03F3/45183 ,  H03F2200/108 ,  H03F2200/117 ,  H03F2200/141 ,  H03F2203/45532 ,  H03G1/007

摘要： A broadband variable gain amplifier with improved linearity and gain characteristic is provided. According to the present invention, the broadband variable gain amplifier comprises: an amplification unit for amplifying an input signal applied to an input terminal and outputting an amplified signal to an output terminal; and a gain control unit which is connected between the input and output terminals, and for controlling gain of said amplification unit, wherein said gain control unit comprises: a variable resistance unit whose resistance value is varied according to a control signal; and a broadband matching unit for proving an optimal impedance characteristic to the input terminal said amplification unit in a broad band, where in said variable gain resistance unit and said broadband matching unit is connected in parallel.

摘要翻译： 提供了具有改善的线性度和增益特性的宽带可变增益放大器。 根据本发明，宽带可变增益放大器包括：放大单元，用于放大施加到输入端的输入信号，并将放大的信号输出到输出端; 以及增益控制单元，其连接在所述输入和输出端子之间并用于控制所述放大单元的增益，其中所述增益控制单元包括：电阻值根据控制信号而变化的可变电阻单元; 以及宽带匹配单元，用于向所述放大单元在宽带中证明最佳阻抗特性，其中所述可变增益电阻单元和所述宽带匹配单元并联连接。

公开(公告)号：US09535530B2

公开(公告)日：2017-01-03

申请号：US13531879

申请日：2012-06-25

申请人： Youngho Cho ,  Bonkee Kim

发明人： Youngho Cho ,  Bonkee Kim

IPC分类号： G01R27/26 ,  G06F3/041 ,  G06F3/044 ,  H03K17/96 ,  G01D3/032 ,  G11C27/02 ,  H03H19/00 ,  G01D5/24

CPC分类号： G06F3/0416 ,  G01D3/032 ,  G01D5/24 ,  G06F3/044 ,  G11C27/026 ,  H03H19/004 ,  H03K17/962 ,  H03K2217/960705 ,  H03K2217/960725

摘要： Disclosed is a capacitance sensor including: a capacitance-voltage/current converter which converts a capacitance value of a sense capacitor into a voltage signal or a current signal by using an input signal; a multiplier which applies a weight to an output signal of the capacitance-voltage/current converter and outputs the weighted output signal; and an accumulator which accumulates continuously the output signal of the multiplier.

摘要翻译： 公开了一种电容传感器，包括：电容电压/电流转换器，其通过使用输入信号将感测电容器的电容值转换为电压信号或电流信号; 乘法器，其对电容电压/电流转换器的输出信号施加权重，并输出加权的输出信号; 以及累加器，其累加乘法器的输出信号。

公开(公告)号：US20120268971A1

公开(公告)日：2012-10-25

申请号：US13421994

申请日：2012-03-16

申请人： Bonkee Kim

发明人： Bonkee Kim

IPC分类号： H02M3/335

CPC分类号： H02M3/33523 ,  H02M1/4258 ,  H02M2001/0009 ,  Y02B70/126

摘要： The present invention relates to a power supply for controlling current that uses a flyback converter for electrical insulation between a load line unit and the power supply for controlling current. In a transformer (a flyback converter) having a flyback structure in the present invention, disclosed is a device which expects a current of the second coil by sensing a current of the first coil of the transformer, and controls the current flowing through the load line unit. A level detector is included, which updates a duty time or an on-time of the switch by transferring a reset signal to an integrator and a second sampler in accordance with a cycle of an input power. As a result, it is possible to reduce power loss by increasing a power factor through the adjustment of the phase of the current of the load line unit and an input voltage.

摘要翻译： 本发明涉及一种用于控制电流的电源，该电流使用用于负载线单元和用于控制电流的电源之间的电绝缘的反激转换器。 在本发明中具有回扫结构的变压器（反激式转换器）中，公开了一种通过检测变压器的第一线圈的电流来预测第二线圈的电流并控制流过负载线的电流的装置 单元。 包括电平检测器，其通过根据输入功率的周期将复位信号传送到积分器和第二采样器来更新占空比时间或导通时间。 结果，可以通过调整负载线单元的电流的相位和输入电压来增加功率因数来降低功率损耗。

公开(公告)号：US20080051050A1

公开(公告)日：2008-02-28

申请号：US11843322

申请日：2007-08-22

申请人： Bonkee Kim ,  Bo-Eun Kim

发明人： Bonkee Kim ,  Bo-Eun Kim

IPC分类号： H04B1/06

CPC分类号： H03G3/3068

摘要： The receiver comprises a variable gain amplification unit, a mixing unit, a filtering unit, and three compensation unit. Each compensation unit detects powers of the signal amplified in the variable gain amplification unit, the signal down-converted in the mixing unit and the signal filtered in the filtering unit. A gain of the variable gain amplification unit is adjusted based on the powers detected by three compensation units.

摘要翻译： 接收机包括可变增益放大单元，混合单元，滤波单元和三个补偿单元。 每个补偿单元检测在可变增益放大单元中放大的信号的功率，在混合单元中被下变频的信号和在滤波单元中滤波的信号。 基于由三个补偿单元检测的功率来调整可变增益放大单元的增益。

公开(公告)号：US20070176746A1

公开(公告)日：2007-08-02

申请号：US11551658

申请日：2006-10-20

申请人： Jeiyoung Lee ,  Kyoung On Yang ,  Bonkee Kim ,  Bo-Eun Kim

发明人： Jeiyoung Lee ,  Kyoung On Yang ,  Bonkee Kim ,  Bo-Eun Kim

IPC分类号： H04Q5/22

CPC分类号： G06K7/0008 ,  G06K7/10069 ,  H04B1/403 ,  H04B1/525

摘要： Provided are a radio frequency identification (RFID) reader and a RFID system. Particularly, the RFID reader uses a listen before talk (LBT) mode to identify. A reader for RFID comprises a data path block receiving a tag data signal, a search path block receiving a channel search signal, and a path selection block selecting one of the data path block and the search path block.

摘要翻译： 提供射频识别（RFID）读取器和RFID系统。 特别地，RFID读取器使用听话（LBT）模式来识别。 用于RFID的读取器包括接收标签数据信号的数据路径块，接收信道搜索信号的搜索路径块和选择数据路径块和搜索路径块之一的路径选择块。

公开(公告)号：US20070047870A1

公开(公告)日：2007-03-01

申请号：US11488997

申请日：2006-07-19

申请人： Minsu Jeong ,  Bo-Eun Kim ,  Bonkee Kim

发明人： Minsu Jeong ,  Bo-Eun Kim ,  Bonkee Kim

IPC分类号： G02B6/12

CPC分类号： H01L25/18 ,  H01L25/0657 ,  H01L2224/48091 ,  H04N5/4401 ,  H04N5/46 ,  H04N21/426 ,  H04N21/6112 ,  H04N21/6143 ,  H01L2924/00014

摘要： The present invention relates to a receiver chip formed on a monolithic semiconductor integrated circuit substrate. The receiver chip comprises a first receiver chip for receiving terrestrial digital multimedia broadcasting signals, a second receiver chip for receiving satellite digital multimedia broadcasting signals, and the monolithic semiconductor integrated circuit substrate. The first and second receiver chips are stacked and bonded on the monolithic semiconductor integrated circuit substrate.

摘要翻译： 本发明涉及形成在单片半导体集成电路基板上的接收芯片。 接收器芯片包括用于接收地面数字多媒体广播信号的第一接收器芯片，用于接收卫星数字多媒体广播信号的第二接收器芯片和单片半导体集成电路基板。 第一和第二接收器芯片堆叠并结合在单片半导体集成电路基板上。

公开(公告)号：US20060135102A1

公开(公告)日：2006-06-22

申请号：US11304566

申请日：2005-12-16

申请人： Junghwan Lee ,  Bonkee Kim

发明人： Junghwan Lee ,  Bonkee Kim

IPC分类号： H04B1/06 ,  H04B7/00

CPC分类号： H04B1/30 ,  H03G3/3078

摘要： The present invention relates to temperature compensation of a tuner, and more particularly, to a tuner in which Take-Over Point (TOP) is compensated for according to a temperature. The tuner according to the present invention down-converts a Radio Frequency (RF) wireless signal and outputs the converted signal. The tuner compensates for a TOP depending on a temperature and includes: received signal strength detection means for detecting a received signal strength depending on a RF output of the tuner and transmitting the detected strength to a gain control unit; temperature measurement means for measuring an operating temperature of the tuner and transmitting the measured temperature value; a compensation unit for receiving the measured temperature value from the temperature measurement means to compare the received temperature value with a reference TOP value, compensating for the TOP value depending on variation in temperature and outputting the compensated value; and a gain control unit for receiving the compensated value from the compensation unit to controls the RF output based on the TOP value and the received signal strength received from the received signal strength detection means.

摘要翻译： 调谐器的温度补偿技术领域本发明涉及一种调谐器的温度补偿，更具体地，涉及一种根据温度来补偿接收点（TOP）的调谐器。 根据本发明的调谐器对射频（RF）无线信号进行下变频并输出转换的信号。 调谐器根据温度补偿TOP，并且包括：接收信号强度检测装置，用于根据调谐器的RF输出检测接收信号强度，并将检测到的强度传输到增益控制单元; 温度测量装置，用于测量调谐器的工作温度并传送测量的温度值; 补偿单元，用于从温度测量装置接收测量的温度值，以将接收到的温度值与参考TOP值进行比较，根据温度变化补偿TOP值并输出补偿值; 以及增益控制单元，用于从所述补偿单元接收所述补偿值，以基于从所述接收信号强度检测装置接收的所述TOP值和接收信号强度来控制所述RF输出。

公开(公告)号：US06756924B2

公开(公告)日：2004-06-29

申请号：US10438941

申请日：2003-05-16

申请人： Junghwan Lee ,  Bo-Eun Kim ,  Jinkyu Lim ,  Minsu Jeong ,  Bonkee Kim

发明人： Junghwan Lee ,  Bo-Eun Kim ,  Jinkyu Lim ,  Minsu Jeong ,  Bonkee Kim

IPC分类号： H03M110

CPC分类号： H03F3/45995 ,  H03F2200/294 ,  H03F2200/372

摘要： A signal processing apparatus for correcting DC offset in a communication system is provided. The signal processing apparatus comprises: a low noise amplifier (LNA) 301; a mixer 303 for mixing the output from said LNA 301 with local oscillation signal LO; a first offset correction amplifier 305 for amplifying output signal from said mixer 303 and for eliminating DC offset in the output signal in accordance with first control signal Vc31; a second offset correction amplifier 309 for amplifying output signal from said first offset correction amplifier 305 and for eliminating DC offset in the output signal in accordance with second control signal Vc32; a variable gain amplifier 311 for amplifying output from said second offset correction amplifier 309 wherein gain is controlled such that power level of output be maintained to a desired value; offset calibration mean 313 for calibrating DC offset in output from said variable gain amplifier 311; and offset correction mean 315 for outputting the first and second control signals Vc31 and Vc32 in accordance with the output from said offset calibration mean 313, to eliminate DC offset in the output from said variable gain amplifier 311.

摘要翻译： 提供一种用于校正通信系统中的DC偏移的信号处理装置。 信号处理装置包括：低噪声放大器（LNA）301; 用于将来自所述LNA 301的输出与本地振荡信号LO混频的混频器303; 用于放大来自所述混频器303的输出信号并根据第一控制信号Vc31消除输出信号中的DC偏移的第一偏移校正放大器305; 第二偏移校正放大器309，用于放大来自所述第一偏移校正放大器305的输出信号，并根据第二控制信号Vc32消除输出信号中的DC偏移; 用于放大来自所述第二偏移校正放大器309的输出的可变增益放大器311，其中增益被控制使得输出的功率电平保持到期望值; 用于校准来自所述可变增益放大器311的输出中的直流偏移的偏移校准平均值313; 以及偏移校正平均值315，用于根据所述偏移校准平均值313的输出输出第一和第二控制信号Vc31和Vc32，以消除所述可变增益放大器311的输出中的DC偏移。