公开(公告)号：US07636009B2

公开(公告)日：2009-12-22

申请号：US12014041

申请日：2008-01-14

申请人： Byeong Hak Jo ,  Yoo Sam Na ,  Kyoung Seok Park ,  Hyeon Seok Hwang ,  Seung Min Oh

发明人： Byeong Hak Jo ,  Yoo Sam Na ,  Kyoung Seok Park ,  Hyeon Seok Hwang ,  Seung Min Oh

IPC分类号： G05F1/10

CPC分类号： H03F1/301

摘要： There is provided a bias current generating apparatus capable of providing a bias current where a characteristic change is compensated, to one of an analog circuit and RF circuit where various characteristic changes occur according to a temperature, by generating bias currents having a plurality of temperature coefficients. The apparatus includes: a positive temperature coefficient current generator generating a positive temperature coefficient current in direct proportion to an absolute temperature; a zero temperature coefficient current generator generating a zero temperature coefficient current constant regardless of the absolute temperature; and an adjustable temperature coefficient current generator generating and outputting an adjustable temperature coefficient current by amplifying the positive temperature coefficient current by A times, amplifying the zero temperature coefficient current by B times, adding the two amplified temperature coefficient currents, wherein a temperature coefficient of the adjustable temperature coefficient current is varied by adjusting sizes of the A and B.

摘要翻译： 提供了一种偏置电流产生装置，其能够通过产生具有多个温度系数的偏置电流，将特性变化补偿的偏置电流提供给模拟电路和RF电路中的一个，其中根据温度发生各种特性变化 。 该装置包括：正温度系数电流发生器，其与绝对温度成正比地产生正温度系数电流; 产生零温度系数电流恒定的零温度系数电流发生器，与绝对温度无关; 以及可调温度系数电流发生器，通过将正温度系数电流放大A倍，并将零温度系数电流放大B倍，生成并输出可调温度系数电流，加上两个放大温度系数电流，其中， 调节温度系数电流可以通过调节A和B的尺寸来改变。

公开(公告)号：US20080180161A1

公开(公告)日：2008-07-31

申请号：US12014041

申请日：2008-01-14

申请人： Byeong Hak JO ,  Yoo Sam Na ,  Kyoung Seok Park ,  Hyeon Seok Hwang ,  Seung Min Oh

发明人： Byeong Hak JO ,  Yoo Sam Na ,  Kyoung Seok Park ,  Hyeon Seok Hwang ,  Seung Min Oh

IPC分类号： H01L35/00

CPC分类号： H03F1/301

摘要： There is provided a bias current generating apparatus capable of providing a bias current where a characteristic change is compensated, to one of an analog circuit and RF circuit where various characteristic changes occur according to a temperature, by generating bias currents having a plurality of temperature coefficients. The apparatus including: a positive temperature coefficient current generator generating a positive temperature coefficient current in direct proportion to an absolute temperature; a zero temperature coefficient current generator generating a zero temperature coefficient current constant regardless of the absolute temperature; and an adjustable temperature coefficient current generator generating and outputting an adjustable temperature coefficient current by amplifying the positive temperature coefficient current by A times, amplifying the zero temperature coefficient current by B times, adding the two amplified temperature coefficient currents, wherein a temperature coefficient of the adjustable temperature coefficient current is varied by adjusting sizes of the A and B.

摘要翻译： 提供了一种偏置电流产生装置，其能够通过产生具有多个温度系数的偏置电流，将特性变化补偿的偏置电流提供给模拟电路和RF电路中的一个，其中根据温度发生各种特性变化 。 该装置包括：正温度系数电流发生器，其与绝对温度成正比地产生正温度系数电流; 产生零温度系数电流恒定的零温度系数电流发生器，与绝对温度无关; 以及可调温度系数电流发生器，通过将正温度系数电流放大A倍，并将零温度系数电流放大B倍，生成并输出可调温度系数电流，加上两个放大温度系数电流，其中， 调节温度系数电流可以通过调节A和B的尺寸来改变。

公开(公告)号：US07525395B2

公开(公告)日：2009-04-28

申请号：US12140980

申请日：2008-06-17

申请人： Hyeon Seok Hwang ,  Yoo Sam Na ,  Moon Sun Kim ,  Byeong Hak Jo ,  Kyoung Seok Park

发明人： Hyeon Seok Hwang ,  Yoo Sam Na ,  Moon Sun Kim ,  Byeong Hak Jo ,  Kyoung Seok Park

IPC分类号： H01P1/22

CPC分类号： H03H7/25

摘要： There is provided a step attenuator having two Pi-type attenuators and one bridged-T type attenuator that share some resistors. The step attenuator is used to prevent a reduction in frequency range caused by use of MOS transistors and reduce attenuation of signal power and frequency band by the MOS transistors, thereby obtaining a low attenuation value and reducing input and output mismatch.

摘要翻译： 提供了具有两个Pi型衰减器和一个共享一些电阻器的一个桥接T型衰减器的阶跃衰减器。 步进衰减器用于防止使用MOS晶体管引起的频率范围的降低，并减少MOS晶体管对信号功率和频带的衰减，从而获得低衰减值并降低输入和输出失配。

公开(公告)号：US20090021331A1

公开(公告)日：2009-01-22

申请号：US12140980

申请日：2008-06-17

申请人： Hyeon Seok Hwang ,  Yoo Sam Na ,  Moon Sun Kim ,  Byeong Hak Jo ,  Kyoung Seok Park

发明人： Hyeon Seok Hwang ,  Yoo Sam Na ,  Moon Sun Kim ,  Byeong Hak Jo ,  Kyoung Seok Park

IPC分类号： H03H11/24

CPC分类号： H03H7/25

摘要： There is provided a step attenuator having two Pi-type attenuators and one bridged-T type attenuator that share some resistors. The step attenuator is used to prevent a reduction in frequency range caused by use of MOS transistors and reduce attenuation of signal power and frequency band by the MOS transistors, thereby obtaining a low attenuation value and reducing input and output mismatch.

摘要翻译： 提供了具有两个Pi型衰减器和一个共享一些电阻器的一个桥接T型衰减器的阶跃衰减器。 步进衰减器用于防止使用MOS晶体管引起的频率范围的降低，并减少MOS晶体管对信号功率和频带的衰减，从而获得低衰减值并降低输入和输出失配。

公开(公告)号：US08143950B2

公开(公告)日：2012-03-27

申请号：US12712071

申请日：2010-02-24

申请人： Hyeon Seok Hwang ,  Yoo Sam Na ,  Moon Suk Jeong ,  Gyu Suck Kim ,  Byeong Hak Jo

发明人： Hyeon Seok Hwang ,  Yoo Sam Na ,  Moon Suk Jeong ,  Gyu Suck Kim ,  Byeong Hak Jo

IPC分类号： H03F1/52 ,  H03F1/22

CPC分类号： H03F1/223

摘要： Disclosed herein is a power amplifier. The power amplifier includes a first common source transistor for amplifying an input signal into a predetermined level, a second common source transistor for compensating for input capacitance and performing auxiliary amplification for the first common source transistor, and a common gate transistor connected to the first common source transistor in a cascode structure, configured to be connected in parallel to the second common source transistor and prevent the first common source transistor from breaking down, and configured to output a signal amplified by a value obtained by adding the gain of the first common source transistor and the gain of the second common source transistor to each other.

摘要翻译： 这里公开了功率放大器。 功率放大器包括用于将输入信号放大到预定电平的第一公共源极晶体管，用于补偿输入电容并对第一公共源晶体管执行辅助放大的第二公共源极晶体管，以及连接到第一公共栅极晶体管的公共栅极晶体管 源极晶体管，其被配置为并联连接到第二公共源极晶体管，并且防止第一公共源极晶体管分解，并且被配置为输出通过将第一公共源的增益相加而获得的值放大的信号 晶体管和第二公共源极晶体管的增益。

公开(公告)号：US08482355B2

公开(公告)日：2013-07-09

申请号：US13223738

申请日：2011-09-01

申请人： Byeong Hak Jo ,  Yoo Sam Na ,  Hyeon Seok Hwang ,  Moon Suk Jeong ,  Gyu Suck Kim ,  Moon Sun Kim

发明人： Byeong Hak Jo ,  Yoo Sam Na ,  Hyeon Seok Hwang ,  Moon Suk Jeong ,  Gyu Suck Kim ,  Moon Sun Kim

IPC分类号： H03F1/22

CPC分类号： H03F1/3205 ,  H03F1/223 ,  H03F3/211 ,  H03F2200/108 ,  H03F2200/18

摘要： There is provided a complementary metal oxide semiconductor (CMOS) power amplifier including: a load unit connected between an operating voltage supply terminal and an output terminal; an amplifying unit formed as a cascode structure between the load unit and a ground, amplifying a power of an input signal input through an input terminal and outputting the amplified signal through an output terminal; and a threshold voltage control unit varying a threshold voltage of the amplifying unit according to a magnitude of the input signal input through the input terminal.

摘要翻译： 提供了一种互补金属氧化物半导体（CMOS）功率放大器，包括：连接在工作电压源端子和输出端子之间的负载单元; 放大单元，其形成为负载单元和地之间的共源共栅结构，放大通过输入端输入的输入信号的功率，并通过输出端输出放大的信号; 以及阈值电压控制单元，根据通过输入端子输入的输入信号的大小来改变放大单元的阈值电压。

公开(公告)号：US20130079065A1

公开(公告)日：2013-03-28

申请号：US13620685

申请日：2012-09-14

申请人： Byeong Hak Jo ,  Hyeon Seok Hwang ,  Yoo Sam Na ,  Yoo Hwan Kim

发明人： Byeong Hak Jo ,  Hyeon Seok Hwang ,  Yoo Sam Na ,  Yoo Hwan Kim

IPC分类号： H04W52/02

CPC分类号： H03F1/56 ,  H03F1/0277 ,  H03F1/223 ,  H03F3/193 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/27 ,  H03F2200/534 ,  H03F2200/537 ,  H03F2200/541 ,  H03F2203/7206 ,  H03F2203/7215 ,  H03F2203/7236

摘要： There is provided a multi-mode power amplifier having increased isolation, including: a high power mode amplifying unit amplifying an input signal by a pre-set gain when the input signal has a power level higher than a pre-set reference level; a low power mode amplifying unit amplifying the input signal by a pre-set gain when the input signal has a power level lower than the pre-set reference level; a switch unit including one or more switches selectively proving a signal transmission path to the high power mode amplifying unit and the low power mode amplifying unit; and a controller providing a control signal having a pre-set voltage level for switching the one or more switches of the switch unit on or off, the voltage level of the control signal for switching the one or more switches off being set to be a negative voltage.

摘要翻译： 提供了具有增加的隔离度的多模式功率放大器，包括：当输入信号具有高于预设基准电平的功率电平时，高功率模式放大单元将输入信号放大预设增益; 低功率模式放大单元，当所述输入信号具有低于所述预置参考电平的功率电平时，将所述输入信号放大预定增益; 开关单元，其包括选择性地证明到高功率模式放大单元和低功率模式放大单元的信号传输路径的一个或多个开关; 以及控制器，其提供具有用于开关单元的一个或多个开关的开关的预设电压电平的控制信号，用于将一个或多个开关切换的控制信号的电压电平设置为负 电压。

公开(公告)号：US07663443B2

公开(公告)日：2010-02-16

申请号：US12197150

申请日：2008-08-22

申请人： Moon Sun Kim ,  Yoo Sam Na ,  Hyeon Seok Hwang

发明人： Moon Sun Kim ,  Yoo Sam Na ,  Hyeon Seok Hwang

IPC分类号： H03F3/04

CPC分类号： H03H11/32

摘要： There is provided an active balun circuit including: a load circuit unit including a first and a second load; a differential amplifying unit including a first amplifying unit connected to the first load, and a second amplifying unit connected to the second load and forming a differential amplifying unit together with the first amplifying unit, the differential amplifying unit differentially amplifying an input signal, and outputting first and second output signals out-of-phase with each other through first and second output terminals, respectively; a current source connected between a ground and a common connection node of the first and second amplifying units, and maintaining a constant amount of current flowing through the differential amplifying unit; and a compensation amplifying unit amplifying the input signal supplied through the input terminal, transmitting the amplified input signal to the second amplifying unit, and rejecting common mode noise of the differential amplifying unit.

摘要翻译： 提供了一种主动平衡 - 不平衡变换电路，包括：负载电路单元，包括第一和第二负载; 差分放大单元，包括连接到第一负载的第一放大单元和连接到第二负载的第二放大单元，与第一放大单元一起形成差分放大单元，差分放大单元对输入信号进行差分放大，并输出 第一和第二输出信号分别通过第一和第二输出端子彼此异相; 电流源，连接在所述第一和第二放大单元的接地和公共连接节点之间，并且保持流经所述差分放大单元的恒定电流量; 以及补偿放大单元，放大通过输入端子提供的输入信号，将放大的输入信号发送到第二放大单元，以及拒绝差分放大单元的共模噪声。

公开(公告)号：US20090051440A1

公开(公告)日：2009-02-26

申请号：US12197150

申请日：2008-08-22

申请人： Moon Sun Kim ,  Yoo Sam Na ,  Hyeon Seok Hwang

发明人： Moon Sun Kim ,  Yoo Sam Na ,  Hyeon Seok Hwang

IPC分类号： H03F3/45

CPC分类号： H03H11/32

摘要： There is provided an active balun circuit including: a load circuit unit including a first and a second load; a differential amplifying unit including a first amplifying unit connected to the first load, and a second amplifying unit connected to the second load and forming a differential amplifying unit together with the first amplifying unit, the differential amplifying unit differentially amplifying an input signal, and outputting first and second output signals out-of-phase with each other through first and second output terminals, respectively; a current source connected between a ground and a common connection node of the first and second amplifying units, and maintaining a constant amount of current flowing through the differential amplifying unit; and a compensation amplifying unit amplifying the input signal supplied through the input terminal, transmitting the amplified input signal to the second amplifying unit, and rejecting common mode noise of the differential amplifying unit.

摘要翻译： 提供了一种主动平衡 - 不平衡变换电路，包括：负载电路单元，包括第一和第二负载; 差分放大单元，包括连接到第一负载的第一放大单元和连接到第二负载的第二放大单元，与第一放大单元一起形成差分放大单元，差分放大单元对输入信号进行差分放大，并输出 第一和第二输出信号分别通过第一和第二输出端子彼此异相; 电流源，连接在所述第一和第二放大单元的接地和公共连接节点之间，并且保持流经所述差分放大单元的恒定电流量; 以及补偿放大单元，放大通过输入端子提供的输入信号，将放大的输入信号发送到第二放大单元，以及拒绝差分放大单元的共模噪声。

公开(公告)号：US07796968B2

公开(公告)日：2010-09-14

申请号：US11878145

申请日：2007-07-20

申请人： Hyeon Seok Hwang ,  Seung Min Oh

发明人： Hyeon Seok Hwang ,  Seung Min Oh

IPC分类号： H04B1/26

CPC分类号： H03D7/1441 ,  H03D7/1433 ,  H03D7/1458 ,  H03D7/1491 ,  H03D2200/0033 ,  H03D2200/0047

摘要： A frequency conversion circuit comprises an input stage composed of one or more transistors, the input stage outputting a current corresponding to a voltage-type RF signal which is input to the gate of the transistor; a frequency conversion stage receiving an LO signal, causing the output RF signal to transit by the frequency of the LO signal so as to output an IF signal, and detecting an output voltage of the IF signal; a bleeding transistor connected to the input stage, supplying a current corresponding to a DC voltage, applied to a gate-source stage thereof, as a bleeding current to the transistor of the input stage, and in an AC manner, operating complementarily with the input stage to control a current flowing in the frequency conversion stage; a common mode feedback circuit comparing an output voltage provided from the frequency conversion stage with a preset reference voltage, adjusting the output voltage such that the output voltage is equalized to the reference voltage, and directly feeding the adjusted output voltage to the bleeding transistor; and a load stage composed of resistors and distributing a power supply voltage to apply to the frequency conversion stage.

摘要翻译： 频率转换电路包括由一个或多个晶体管组成的输入级，输入级输出对应于输入到晶体管的栅极的电压型RF信号的电流; 频率转换级接收LO信号，使得输出RF信号通过LO信号的频率转移，以输出IF信号，并检测IF信号的输出电压; 连接到输入级的出血晶体管，将施加到其栅极 - 源极级的对应于直流电压的电流作为输出级的晶体管的输出电流提供，并以AC方式与输入端互补地工作 控制在变频阶段流动的电流; 将从变频级提供的输出电压与预设参考电压进行比较的共模反馈电路，调整输出电压使得输出电压与参考电压相等，并将调整的输出电压直接馈送到出血晶体管; 以及由电阻器组成的负载级，并分配施加到变频级的电源电压。