公开(公告)号：US07525386B2

公开(公告)日：2009-04-28

申请号：US12146299

申请日：2008-06-25

申请人： Tae Wook Kim ,  Bonkee Kim ,  Kwyro Lee

发明人： Tae Wook Kim ,  Bonkee Kim ,  Kwyro Lee

IPC分类号： H03F3/68

CPC分类号： H03F3/505 ,  H03F1/3205 ,  H03F1/3211 ,  H03F3/345 ,  H03F2200/453 ,  H03F2203/5042

摘要： The present invention relates to improved linearity of an active circuit, and more particularly, to an active circuit having improved linearity using a main circuit unit and an assistant circuit unit. According to the present invention, the common gate circuit includes a main circuit unit consisting of a common gate circuit having a drain terminal through which an input signal is output as an output signal, an assistant circuit unit having a common gate circuit in order to assist the linearity of the main circuit unit, a biasing unit for biasing the main circuit unit and the assistant circuit unit, respectively, and load stages connected to output stages of the main circuit unit and the assistant circuit unit, wherein the output stages of the main circuit unit and the assistant circuit unit are coupled to each other.

公开(公告)号：US20070210871A1

公开(公告)日：2007-09-13

申请号：US11681893

申请日：2007-03-05

申请人： Tae Wook KIM ,  Hee yong Yoo ,  Bonkee Kim ,  Minsu Jeong

发明人： Tae Wook KIM ,  Hee yong Yoo ,  Bonkee Kim ,  Minsu Jeong

IPC分类号： H03G3/10

CPC分类号： H03F1/301 ,  H03F3/193 ,  H03F3/68

摘要： The present invention relates to an amplifier and, more particularly, to an adaptive linear amplifier with low power consumption and a high linearity. The adaptive linear amplifier according to the present invention comprises amplification means and a bias controller. The amplification means comprises a main transistor and an auxiliary transistor unit. The main transistor and the auxiliary transistor unit are coupled to each other. The bias controller controls a bias voltage applied to the main transistor and the auxiliary transistor unit.

摘要翻译： 本发明涉及一种放大器，更具体地说，涉及一种具有低功耗和高线性度的自适应线性放大器。 根据本发明的自适应线性放大器包括放大装置和偏置控制器。 放大装置包括主晶体管和辅助晶体管单元。 主晶体管和辅助晶体管单元彼此耦合。 偏置控制器控制施加到主晶体管和辅助晶体管单元的偏置电压。

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：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：US07319364B2

公开(公告)日：2008-01-15

申请号：US11281580

申请日：2005-11-18

申请人： Tae Wook Kim ,  Bonkee Kim ,  Kwyro Lee

发明人： Tae Wook Kim ,  Bonkee Kim ,  Kwyro Lee

IPC分类号： H03F3/68 ,  H03F1/22

CPC分类号： H03F1/3205 ,  H03F1/223 ,  H03F1/26 ,  H03F1/42 ,  H03F2200/372 ,  H03F2200/492

摘要： Disclosed herein is an amplifier circuit having improved linearity and frequency band using a MGTR. The amplifier circuit comprises an amplification unit including a main transistor and an auxiliary transistor, an attenuation unit including inductors respectively connected to the source of the main transistor and the source of the auxiliary transistor, a capacitor connected at one end thereof to the sources of the main transistor and auxiliary transistor and connected at the other end thereof to the gates of the main transistor and auxiliary transistor, and an output unit connected to the drains of the main transistor and auxiliary transistor.

摘要翻译： 这里公开了一种使用MGTR具有改进的线性度和频带的放大器电路。 该放大器电路包括一个包括一个主晶体管和一个辅助晶体管的放大单元，一个衰减单元包括分别连接到主晶体管的源极和辅助晶体管的源极的电感器，一端与它的源极连接的电容器 主晶体管和辅助晶体管，其另一端连接到主晶体管和辅助晶体管的栅极，以及连接到主晶体管和辅助晶体管的漏极的输出单元。

公开(公告)号：US20070200631A1

公开(公告)日：2007-08-30

申请号：US11464660

申请日：2006-08-15

申请人： Tae Kim ,  Bonkee Kim ,  Kwyro Lee

发明人： Tae Kim ,  Bonkee Kim ,  Kwyro Lee

IPC分类号： H03F1/22 ,  H03F3/04

CPC分类号： H03F1/34 ,  H03F1/223 ,  H03F1/3205 ,  H03F2200/162 ,  H03F2200/36 ,  H03F2200/366 ,  H03F2200/432

摘要： An amplifier circuit improved in linearity and frequency band comprises an amplification block, a feedback block and an output block. The amplification block comprises a main transistor, an auxiliary transistor, a first capacitor, a second capacitor, a main transistor bias unit, and an auxiliary transistor bias unit. The main transistor bias unit comprises a first bias resistor. The auxiliary transistor bias unit comprises a second bias resistor. The feedback block comprises first and second feedback resistors, and the output block comprises an output resistor and an output transistor.

摘要翻译： 线性度和频带改善的放大器电路包括放大块，反馈块和输出块。 放大块包括主晶体管，辅助晶体管，第一电容器，第二电容器，主晶体管偏置单元和辅助晶体管偏置单元。 主晶体管偏置单元包括第一偏置电阻器。 辅助晶体管偏置单元包括第二偏置电阻器。 反馈块包括第一和第二反馈电阻器，并且输出块包括输出电阻器和输出晶体管。

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：US20060091962A1

公开(公告)日：2006-05-04

申请号：US11281580

申请日：2005-11-18

申请人： Tae Kim ,  Bonkee Kim ,  Kwyro Lee

发明人： Tae Kim ,  Bonkee Kim ,  Kwyro Lee

IPC分类号： H03F1/22

CPC分类号： H03F1/3205 ,  H03F1/223 ,  H03F1/26 ,  H03F1/42 ,  H03F2200/372 ,  H03F2200/492

摘要： Disclosed herein is an amplifier circuit having improved linearity and frequency band using a MGTR. The amplifier circuit comprises an amplification unit including a main transistor and an auxiliary transistor, an attenuation unit including inductors respectively connected to the source of the main transistor and the source of the auxiliary transistor, a capacitor connected at one end thereof to the sources of the main transistor and auxiliary transistor and connected at the other end thereof to the gates of the main transistor and-auxiliary transistor, and an output unit connected to the drains of the main transistor and auxiliary transistor.

摘要翻译： 这里公开了一种使用MGTR具有改进的线性度和频带的放大器电路。 该放大器电路包括一个包括一个主晶体管和一个辅助晶体管的放大单元，一个衰减单元包括分别连接到主晶体管的源极和辅助晶体管的源极的电感器，一端与它的源极连接的电容器 主晶体管和辅助晶体管，并且在其另一端连接到主晶体管和辅助晶体管的栅极，以及连接到主晶体管和辅助晶体管的漏极的输出单元。

公开(公告)号：US07035615B2

公开(公告)日：2006-04-25

申请号：US10257920

申请日：2002-02-20

申请人： Youngjin Kim ,  Bonkee Kim ,  Kwyro Lee ,  Sunguk Kim ,  Yongseok Kim

发明人： Youngjin Kim ,  Bonkee Kim ,  Kwyro Lee ,  Sunguk Kim ,  Yongseok Kim

IPC分类号： H04B1/10 ,  H04B15/06

CPC分类号： H03D7/1441 ,  H03D7/1433 ,  H03D7/1491 ,  H03D2200/0025 ,  H03D2200/0043 ,  H03D2200/0047 ,  H03D2200/0084 ,  H03D2200/009

摘要： The present invention relates to improvement of even order distortion noise, DC offset, and non-linearity of mixer circuits. According to the present invention, a mixer circuit is provided, which comprises a splitter for splitting an input signal to the first and second signal having phase difference of 180 degree, a local oscillator, first mixer for mixing the first signal with the local oscillation signal, second mixer for mixing the second signal with the local oscillation signal, and subtractor for subtracting the output of the second mixer from the output of the first mixer.

摘要翻译： 本发明涉及混频电路的偶次失真噪声，直流偏移和非线性的改进。 根据本发明，提供了一种混频器电路，其包括用于将输入信号分离为具有180度相位差的第一和第二信号的分路器，本地振荡器，用于将第一信号与本地振荡信号混合的第一混频器 用于将第二信号与本地振荡信号混合的第二混频器，以及用于从第一混频器的输出中减去第二混频器的输出的减法器。

公开(公告)号：US20060049876A1

公开(公告)日：2006-03-09

申请号：US11178481

申请日：2005-07-12

申请人： Tae Kim ,  Bonkee Kim ,  Kwyro Lee

发明人： Tae Kim ,  Bonkee Kim ,  Kwyro Lee

IPC分类号： H03F3/68

CPC分类号： H03F3/505 ,  H03F1/3205 ,  H03F1/3211 ,  H03F3/345 ,  H03F2200/453 ,  H03F2203/5042

摘要： The present invention relates to improved linearity of an active circuit, and more particularly, to an active circuit having improved linearity using a main circuit unit and an assistant circuit unit. According to the present invention, the common gate circuit includes a main circuit unit consisting of a common gate circuit having a drain terminal through which an input signal is output as an output signal, an assistant circuit unit having a common gate circuit in order to assist the linearity of the main circuit unit, a biasing unit for biasing the main circuit unit and the assistant circuit unit, respectively, and load stages connected to output stages of the main circuit unit and the assistant circuit unit, wherein the output stages of the main circuit unit and the assistant circuit unit are coupled to each other.