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1. 发明授权

US07796968B2 Frequency conversion circuit 有权
标题翻译：变频电路
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。

2. 发明授权

US07525395B2 Step attenuator 有权
标题翻译：阶衰减器
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。

3. 发明授权

US07180374B2 Photodiode integrated circuit having multiple gain states 失效
标题翻译：具有多个增益状态的光电二极管集成电路
公开(公告)号：US07180374B2
公开(公告)日：2007-02-20
申请号：US11107205
申请日：2005-04-15
申请人： Sang Suk Kim , Kyoung Soo Kwon , Jung Chul Gong , Hyeon Seok Hwang
发明人： Sang Suk Kim , Kyoung Soo Kwon , Jung Chul Gong , Hyeon Seok Hwang
IPC分类号： H03F3/08
CPC分类号： H03F3/211 , G11B7/13 , H03F3/087 , H03F3/45179
摘要： Disclosed herein is a PhotoDiode Integrated Circuit (PDIC) having multiple gain states. The PDIC includes a current-voltage conversion unit, an input amplification stage circuit, a reference resistance unit, a feedback resistance unit, and a switching unit. The current-voltage conversion unit converts a current signal into a voltage signal. The input amplification stage circuit is connected to the current-voltage conversion unit to receive and amplify the voltage signal. The reference resistance unit is connected to the second input terminal of the input amplification stage circuit. The output amplification stage circuit is connected to the output terminal of the input amplification stage circuit. The feedback resistance unit is connected in parallel between the second input terminal and the output terminal of the output amplification stage circuit, and is configured to have a plurality of resistance elements. The switching unit selectively connects the plurality of resistance elements.
摘要翻译：本文公开了具有多个增益状态的光电二极管集成电路（PDIC）。 PDIC包括电流 - 电压转换单元，输入放大级电路，参考电阻单元，反馈电阻单元和开关单元。电流 - 电压转换单元将电流信号转换为电压信号。输入放大级电路连接到电流 - 电压转换单元以接收和放大电压信号。参考电阻单元连接到输入放大级电路的第二输入端。输出放大级电路连接到输入放大级电路的输出端。反馈电阻单元并联连接在输出放大级电路的第二输入端子和输出端子之间，并且被配置为具有多个电阻元件。开关单元选择性地连接多个电阻元件。

4. 发明授权

US08482355B2 Power amplifier 有权
标题翻译：功率放大器
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。

5. 发明申请

US20110037507A1 MIXER WITH DIFFERENTIAL DC OFFSET CANCELLATION FUNCTION 审中-公开
标题翻译：具有差分直流偏移消除功能的混频器
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。

6. 发明授权

US07636009B2 Bias current generating apparatus with adjustable temperature coefficient 失效
标题翻译：偏置电流发生装置，温度系数可调
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。

7. 发明授权

US07227389B2 Circuit and method for compensating for offset voltage 失效
标题翻译：用于补偿失调电压的电路和方法
公开(公告)号：US07227389B2
公开(公告)日：2007-06-05
申请号：US11119437
申请日：2005-04-29
申请人： Jung Chul Gong , Kyoung Soo Kwon , Hyeon Seok Hwang , Sang Suk Kim
发明人： Jung Chul Gong , Kyoung Soo Kwon , Hyeon Seok Hwang , Sang Suk Kim
IPC分类号： H03K5/22
CPC分类号： H03F3/45748 , H03F3/087 , H03F3/45291 , H03F3/45896 , H03F3/45973 , H03F2200/447
摘要： A circuit for compensating for an offset voltage in a PhotoDetector Integrated Circuit (PDIC). The circuit includes a temperature detection unit, a current transfer unit and a current adjustment unit. The temperature detection unit generates a current that varies with variation in surrounding temperature. The current transfer unit transfers the generated current. The current adjustment unit adjusts the current transferred from the current transfer unit at a predetermined ratio and outputs the adjusted current.
摘要翻译：用于补偿光电检测器集成电路（PDIC）中的偏移电压的电路。电路包括温度检测单元，电流传送单元和电流调节单元。温度检测单元产生随着周围温度的变化而变化的电流。当前传输单元传送所产生的电流。电流调节单元以预定比例调整从当前传送单元传送的电流，并输出调整后的电流。

8. 发明申请

US20130079065A1 MULTI-MODE POWER AMPLIFIER 审中-公开
标题翻译：多模式功率放大器
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。

9. 发明申请

US20110143821A1 POWER AMPLIFICATION MODULE FOR MOBILE COMMUNICATION TERMINAL 审中-公开
标题翻译：用于移动通信终端的功率放大模块
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。

10. 发明申请

US20090021331A1 STEP ATTENUATOR 有权
标题翻译：踏步器
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。

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