公开(公告)号：US07362183B2

公开(公告)日：2008-04-22

申请号：US11464660

申请日：2006-08-15

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

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

IPC分类号： H03F3/04

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：US20060022740A1

公开(公告)日：2006-02-02

申请号：US11128351

申请日：2005-05-13

申请人： Tae Kim ,  Bonkee Kim ,  Kwyro Lee

发明人： Tae Kim ,  Bonkee Kim ,  Kwyro Lee

IPC分类号： G06F7/44

CPC分类号： H03D7/1441 ,  H03D7/1433 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0043 ,  H03D2200/0047 ,  H03F1/3211 ,  H03F3/45183

摘要： The present invention relates to a differential amplifier and a mixer for improving the linearity. The differential amplifier circuit according to this present invention, includes first and second load stages each having a predetermined voltage value, a main differential amplifier unit having a first differential stage that forms a differential pair in such a way as to amplify a difference between a first input voltage and a second input voltage, and a constant current source, which has a predetermined current driving capability and is connected serially between a power source voltage terminal and a ground terminal, and a auxiliary differential amplifier unit having a second differential stage that forms a differential pair in such a way as to amplify a difference between a third input voltage and a fourth input voltage connected between the first load stage and a second load stage, and the ground, respectively.

公开(公告)号：US06693493B2

公开(公告)日：2004-02-17

申请号：US10051290

申请日：2002-01-22

申请人： Bonkee Kim ,  Ilku Nam ,  Kwyro Lee

发明人： Bonkee Kim ,  Ilku Nam ,  Kwyro Lee

IPC分类号： H03F3191

CPC分类号： H03D7/1441 ,  H03D7/1466 ,  H03D2200/0023 ,  H03D2200/0043 ,  H03D2200/0088 ,  H03F1/223 ,  H03F2200/372

摘要： The present invention relates to circuits having differential structure which uses complementary devices for processing single-ended signal. The single-ended differential circuit in accordance with the present invention, comprises first and second complementary devices having first, second, and third terminals, respectively, wherein current flowing from the second terminal to the third terminal has its quantity and direction being varying in dependant on the voltage driven to the first terminal, wherein the currents flowing through the first and second complementary devices vary in opposite relationship. The single-ended differential circuit further comprises an input terminal for driving the first terminals of the first and second complementary devices with a control signal; and biasing means connected to the second and third terminals of the first and second devices, for determining biasing points of the first and second complementary devices such that the first and second devices operates in a differential relationship with respect to a signal driven to the input terminal, wherein the biasing means determining the biasing points such that one of the first and second devices is substantially active.

公开(公告)号：US06636115B2

公开(公告)日：2003-10-21

申请号：US09942573

申请日：2001-08-31

申请人： Bonkee Kim ,  Kwyro Lee

发明人： Bonkee Kim ,  Kwyro Lee

IPC分类号： H04B138

CPC分类号： H03F1/3205 ,  H03D7/145 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0043 ,  H03D2200/0084 ,  H03F1/223 ,  H03F1/3211 ,  H03F3/19 ,  H03F3/60 ,  H03F2200/294 ,  H03F2200/372 ,  H03F2203/21178

摘要： The present invention relates to the improvement of linearity of active devices, which can be degraded by the trans-conductance thereof. According to the present invention, an amplifier circuit is provided, which comprises: a main active device having first, second, and third terminal, wherein quantity and direction of current flowing from the second terminal to the third terminal is varying in dependant on voltage driven to the first terminal; an auxiliary active device having first, second, and third terminal, wherein quantity and direction of current flowing from the second terminal to the third terminal is varying in dependant on voltage driven to the first terminal; and a biasing unit connected to the first terminals of the main and auxiliary active devices, the third terminals of the main and auxiliary active devices, voltage source, an input terminal, and an output terminal, by which each of the main and auxiliary active devices operates primarily in saturation region and sub-threshold region, respectively.

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：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.

公开(公告)号：US20070176747A1

公开(公告)日：2007-08-02

申请号：US11556505

申请日：2006-11-03

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

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

IPC分类号： H04Q5/22

CPC分类号： G06K7/0008

摘要： Provided is a reader for radio frequency identification (RFID) and a RFID system. A reader for RFID that receives a channel signal comprises a frequency oscillator generating an oscillating signal at a frequency that is offset by an offset frequency from a center frequency of the channel signal, a mixer mixing the channel signal with the oscillating signal that is offset, and a filter filtering a mixed frequency signal provided from the mixer. The reader for RFID and the RFID system are improved in reception for the wave identification using a listen before talk (LBT) mode for identifying an electronic tag.

摘要翻译： 提供了一种用于射频识别（RFID）和RFID系统的读取器。 用于接收信道信号的用于RFID的读取器包括频率振荡器，该频率振荡器以频率偏移来自信道信号的中心频率的偏移频率产生振荡信号，混频器将信道信号与偏移的振荡信号混合， 以及对从混合器提供的混合频率信号进行滤波的滤波器。 用于RFID和RFID系统的读取器在用于识别电子标签的用于听话（LBT）模式的波识别的接收中被改进。