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：US20110143821A1

公开(公告)日：2011-06-16

申请号：US12714118

申请日：2010-02-26

申请人： Hyeon Seok HWANG ,  Yoo Sam Na ,  Moon Suk Jeong ,  Byeong Hak Jo

发明人： Hyeon Seok HWANG ,  Yoo Sam Na ,  Moon Suk Jeong ,  Byeong Hak Jo

IPC分类号： H04M1/00

CPC分类号： H03F1/223 ,  H03F3/602

摘要： Disclosed herein is a power amplification module for a mobile communication terminal. The power amplification module includes a balanced power amplifier configured to divide an input signal using a phase difference, amplify resulting signals, and combine the amplified signals with each other, and a transmission power detection unit connected to an isolation terminal formed on an output side of the balanced power amplifier and configured to amplify a micro-power signal, which is transmitted to the isolation terminal from an outside of the transmission power detection unit, and to transmit the amplified signal. Accordingly, since the detection signal to input terminal and detection signal output terminal of a transmission power detection unit can be easily implemented using an internal circuit, the entire size of the power amplification module can be reduced. Further, characteristic of isolation between the detection signal input terminal and the detection signal output terminal can be improved.

摘要翻译： 这里公开了一种用于移动通信终端的功率放大模块。 功率放大模块包括：平衡功率放大器，被配置为使用相位差来分割输入信号，放大所产生的信号，并将放大的信号相互组合;以及发送功率检测单元，连接到形成在输出侧的隔离端子 所述平衡功率放大器被配置为放大从所述发送功率检测单元的外部传送到所述隔离端子的微功率信号，并发送所述放大信号。 因此，由于可以使用内部电路容易地实现发送功率检测单元的输入端子和检测信号输出端子的检测信号，因此可以减小功率放大模块的整体尺寸。 此外，可以提高检测信号输入端子与检测信号输出端子之间的隔离特性。

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：US20110037507A1

公开(公告)日：2011-02-17

申请号：US12640173

申请日：2009-12-17

申请人： Hyeon Seok HWANG ,  Yoo Sam Na ,  Byeong Hak Jo

发明人： Hyeon Seok HWANG ,  Yoo Sam Na ,  Byeong Hak Jo

IPC分类号： H03L5/00

CPC分类号： H03D7/1441 ,  H03D7/1458 ,  H03D2200/0047 ,  H03D2200/0088

摘要： A mixer with a differential DC offset cancellation function includes: a load unit including a first load unit and a second load unit; a mixing unit biased by current transferred from the load unit to mix inputs signal and oscillation signals; a first output voltage detection unit detecting an output voltage of the first output terminal; a second output voltage detection unit detecting an output voltage of the second output terminal; a first injection/extraction circuit unit injecting current into the first load unit or extracting current from the first load unit according to the size of a first detection voltage; a second injection/extraction circuit unit injecting current into the second load unit or extracting current from the second load unit according to the size of a second detection voltage; and a current regulation unit regulating an overall current flowing across the first and second injection/extraction circuit units.

摘要翻译： 具有差分DC偏移消除功能的混频器包括：负载单元，包括第一负载单元和第二负载单元; 混合单元被从负载单元传送的电流偏置以混合输入信号和振荡信号; 第一输出电压检测单元，检测第一输出端子的输出电压; 检测第二输出端子的输出电压的第二输出电压检测单元; 第一注入/抽出电路单元，将电流注入到第一负载单元中，或者根据第一检测电压的大小从第一负载单元提取电流; 第二注入/提取电路单元，其将电流注入到所述第二负载单元中，或者根据第二检测电压的大小从所述第二负载单元提取电流; 以及电流调节单元，其调节流过第一和第二注入/提取电路单元的总电流。

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：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：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：US07973606B2

公开(公告)日：2011-07-05

申请号：US12563903

申请日：2009-09-21

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

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

IPC分类号： H03L7/06 ,  H03L7/08 ,  H03L7/085 ,  H03L7/087 ,  H03L7/18

CPC分类号： H03L7/1976 ,  H03L7/087

摘要： The present relates to a fractional-N frequency synthesizer improving noise characteristics and a method thereof. The fractional-N frequency synthesizer includes a reference oscillator that generates a reference frequency signal; a sigma-delta modulator that generates a desired decimal value based on the reference frequency signal; a divider that divides a voltage controlled oscillation frequency signal; first to M phase/frequency detectors that detect a difference in phase and frequency between the reference frequency signal and the divided voltage controlled oscillation frequency signal; first to M charge pumps that are connected to each of the phase/frequency detectors in series and charges or pumps charge amount according to output signals from each of the phase/frequency detectors; a loop filter that controls the amount of supplied current based on output signals from the charge pumps to filter low-pass frequency components; and a voltage controlled oscillator that is oscillated in response to the output signal from the loop filter and generates voltage controlled oscillation frequency signals.

摘要翻译： 本发明涉及一种提高噪声特性的分数N频率合成器及其方法。 分数N频率合成器包括产生参考频率信号的参考振荡器; 基于所述参考频率信号产生所需十进制值的Σ-Δ调制器; 分压器，其分压电压控制的振荡频率信号; 首先检测参考频率信号和分压电压控制振荡频率信号之间的相位和频率差异的M相/频率检测器; 首先对M个串联的每个相位/频率检测器的泵进行充电，并根据来自每个相位/频率检测器的输出信号对电荷或泵充电量; 环路滤波器，其基于来自电荷泵的输出信号来控制供电电流量以滤除低通频率分量; 以及响应于来自环路滤波器的输出信号而振荡并产生压控振荡频率信号的压控振荡器。

公开(公告)号：US08378744B2

公开(公告)日：2013-02-19

申请号：US13279953

申请日：2011-10-24

申请人： Bon Hoon Koo ,  Byeong Hak Jo ,  Ki Yong Son ,  Yoo Sam Na ,  Song Cheol Hong

发明人： Bon Hoon Koo ,  Byeong Hak Jo ,  Ki Yong Son ,  Yoo Sam Na ,  Song Cheol Hong

IPC分类号： H03F1/14

CPC分类号： H03F1/223 ,  H03F1/0277 ,  H03F3/195 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/18 ,  H03F2200/222 ,  H03F2200/318 ,  H03F2200/387 ,  H03F2200/411 ,  H03F2200/516 ,  H03F2200/541 ,  H03F2203/7221 ,  H03F2203/7236

摘要： There is provided a multi-mode power amplifier operable in a low power mode having a preset power range and in a high power mode having a power range higher than the power range of the low power mode. The multi-mode power amplifier includes: a high power amplifying unit including at least one cascode amplifier to amplify an input signal to a high power level having a preset power range; a low power amplifying unit sharing a common source node of the at least one cascode amplifier to amplify the input signal to a low power level having a power range lower than the high power level; and a coupling unit coupling a transfer path of a signal output from the high power amplifying unit and a transfer path of a signal output from the low power amplifying unit to each other.

摘要翻译： 提供了一种可在具有预设功率范围的低功率模式下工作的多模式功率放大器和功率范围高于低功率模式的功率范围的高功率模式。 多模式功率放大器包括：高功率放大单元，包括至少一个共源共栅放大器，用于将输入信号放大到具有预设功率范围的高功率电平; 共享所述至少一个共源共栅放大器的公共源节点的低功率放大单元，以将所述输入信号放大到功率范围低于所述高功率电平的低功率电平; 以及耦合单元，耦合从高功率放大单元输出的信号的传输路径和从低功率放大单元输出的信号的传送路径。