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21. 发明申请

US20090066425A1 FREQUENCY SYNTHESIZER HAVING MULTI-BAND VOLTAGE CONTROLLED OSCILLATOR 有权
标题翻译：具有多波段电压控制振荡器的频率合成器
公开(公告)号：US20090066425A1
公开(公告)日：2009-03-12
申请号：US12205192
申请日：2008-09-05
申请人： Seung Won SEO , Seung Min Oh , Byeong Hak Jo
发明人： Seung Won SEO , Seung Min Oh , Byeong Hak Jo
IPC分类号： H03L7/00
CPC分类号： H03L7/10 , H03L7/099 , H03L7/18 , H03L2207/06
摘要： There is provided a frequency synthesizer including a multi-band voltage controlled oscillator having a plurality of voltage controlled oscillating cores outputting oscillation frequencies having different bands according to an input control voltage. Each of the voltage controlled oscillating cores outputs a frequency band divided into a plurality of bands, and the voltage controlled oscillating core operates by each of the divided bands, and one of the voltage controlled oscillating cores operates in one of the bands according to the control voltage. The frequency synthesizer further includes a comparator unit and an oscillation band-determining unit. The comparator unit compares the control voltage with a pre-set reference voltage range. The oscillation band-determining unit changes the band where the voltage controlled oscillating core operates into another one of the bands when the control voltage is out of the pre-set reference voltage range.
摘要翻译：提供了一种频率合成器，其包括具有根据输入控制电压输出具有不同频带的振荡频率的多个压控振荡核心的多频带压控振荡器。每个压控振荡核心输出被划分成多个频带的频带，并且压控振荡核心由每个分频频带操作，并且一个压控振荡核心根据控制在一个频带中操作电压。频率合成器还包括比较器单元和振荡频带确定单元。比较器单元将控制电压与预设参考电压范围进行比较。当控制电压超出预设的参考电压范围时，振荡频带确定单元将电压控制的振荡磁芯的频带改变为另一个频带。

22. 发明授权

US08633771B2 Power amplifier 有权
标题翻译：功率放大器
公开(公告)号：US08633771B2
公开(公告)日：2014-01-21
申请号：US13272882
申请日：2011-10-13
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： H03F1/22 , H03F3/04
CPC分类号： H03F1/223 , H03F1/565 , H03F3/193 , H03F3/45188 , H03F2203/45621 , H03F2203/45658
摘要： There is provided a power amplifier including an amplifying unit having at least two cascode amplifiers connected in parallel to amplify an input signal; and a bias supply unit supplying bias power to a common gate node of the two cascode amplifiers, and removing a signal of a pre-set frequency band corresponding to a baseband at the common gate node by controlling impedance of the common gate node.
摘要翻译：提供了一种功率放大器，包括具有并联连接的至少两个共源共栅放大器的放大单元，以放大输入信号; 以及偏置电源单元，其向所述两个共源共栅放大器的公共栅极节点提供偏置功率，以及通过控制所述公共栅极节点的阻抗来去除在所述公共栅极节点处与基带相对应的预置频带的信号。

23. 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。

24. 发明授权

US08183928B2 CMOS power amplifier and temperature compensation circuit thereof 有权
标题翻译： CMOS功率放大器及其温度补偿电路
公开(公告)号：US08183928B2
公开(公告)日：2012-05-22
申请号：US13069652
申请日：2011-03-23
申请人： Yoo Hwan Kim , Hyun Hwan Yoo , Yoo Sam Na , Byeong Hak Jo
发明人： Yoo Hwan Kim , Hyun Hwan Yoo , Yoo Sam Na , Byeong Hak Jo
IPC分类号： H03F3/04
CPC分类号： H03F1/30 , H03F1/303 , H03F2200/447 , H03F2200/468
摘要： Disclosed is a CMOS power amplifier. A temperature compensation circuit of a CMOS power amplifier may include: a bias circuit unit supplying a gate bias voltage to a power amplification circuit part; a bias detection unit determining a class type of the power amplification circuit part according to the gate bias voltage; a temperature detection unit detecting a temperature-proportional voltage in proportion to ambient temperature; a temperature compensation control unit generating a compensation control value according to the temperature-proportion voltage in the class type determined by the bias detection unit; and a conversion unit converting the compensation control value of the temperature compensation control unit into a linear bias control value and providing the linear bias control value to the bias circuit unit, wherein the bias circuit unit compensates the gate bias voltage according to the linear bias control value of the conversion unit.
摘要翻译：公开了一种CMOS功率放大器。 CMOS功率放大器的温度补偿电路可以包括：向功率放大电路部分提供栅极偏置电压的偏置电路单元; 偏置检测单元，根据栅极偏置电压确定功率放大电路部分的类别; 温度检测单元，其与环境温度成比例地检测温度成比例的电压; 温度补偿控制单元，根据由偏置检测单元确定的类别中的温度比例电压产生补偿控制值; 以及转换单元，将所述温度补偿控制单元的补偿控制值转换为线性偏置控制值，并将所述线性偏置控制值提供给所述偏置电路单元，其中所述偏置电路单元根据所述线性偏置控制来补偿所述栅极偏置电压转换单位的价值。

25. 发明授权

US08093947B2 Power amplifier 有权
标题翻译：功率放大器
公开(公告)号：US08093947B2
公开(公告)日：2012-01-10
申请号：US12823772
申请日：2010-06-25
申请人： Byeong Hak Jo , Yoo Sam Na , Min Sun Kim , Yoo Hwan Kim
发明人： Byeong Hak Jo , Yoo Sam Na , Min Sun Kim , Yoo Hwan Kim
IPC分类号： H03G3/20
CPC分类号： H03G3/3042
摘要： There is provided a power amplifier with a variable supply of bias power according to a look-up table having a voltage value determined based on a level of an RF signal being input to the power amplifier to thereby increase power efficiency. A power amplifier according to an aspect of the invention may include an amplification section amplifying an input signal according to a bias voltage being supplied; and a bias supply section comparing a level of the input signal with a look-up table set in advance and supplying a bias voltage to the amplification section according to a result of the comparison.
摘要翻译：根据具有基于输入到功率放大器的RF信号的电平确定的电压值的查找表，提供具有可变偏置电源的功率放大器，从而提高功率效率。根据本发明的一个方面的功率放大器可以包括放大部分，其根据所提供的偏置电压来放大输入信号; 以及偏置电源部，其将输入信号的电平与预先设定的查找表进行比较，并根据比较结果向放大部提供偏置电压。

26. 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。

27. 发明申请

US20120286877A1 POWER AMPLIFIER 有权
标题翻译：功率放大器
公开(公告)号：US20120286877A1
公开(公告)日：2012-11-15
申请号：US13272882
申请日：2011-10-13
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： H03F1/22 , H03F3/04
CPC分类号： H03F1/223 , H03F1/565 , H03F3/193 , H03F3/45188 , H03F2203/45621 , H03F2203/45658
摘要： There is provided a power amplifier including an amplifying unit having at least two cascode amplifiers connected in parallel to amplify an input signal; and a bias supply unit supplying bias power to a common gate node of the two cascode amplifiers, and removing a signal of a pre-set frequency band corresponding to a baseband at the common gate node by controlling impedance of the common gate node.
摘要翻译：提供了一种功率放大器，包括具有并联连接的至少两个共源共栅放大器的放大单元，以放大输入信号; 以及偏置电源单元，其向所述两个共源共栅放大器的公共栅极节点提供偏置功率，以及通过控制所述公共栅极节点的阻抗来去除在所述公共栅极节点处与基带相对应的预置频带的信号。

28. 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。

29. 发明授权

US07804370B2 Frequency generator 有权
标题翻译：频率发生器
公开(公告)号：US07804370B2
公开(公告)日：2010-09-28
申请号：US12129219
申请日：2008-05-29
申请人： Byeong Hak Jo , Yoo Sam Na
发明人： Byeong Hak Jo , Yoo Sam Na
IPC分类号： H03B21/01 , H03L7/181 , H03L7/185
CPC分类号： H03L7/18
摘要： There is provided a feedback circuit including: an oscillator generating an oscillation frequency signal; a mixer unit having an input terminal, a feedback terminal, and an output terminal and outputting a frequency signal through the output terminal, the frequency signal obtained by adding or subtracting frequency of a feedback signal, input through the feedback terminal, to or from frequency of the oscillation frequency signal input through the input terminal from the oscillator; a first frequency divider dividing the frequency signal output from the mixer unit at a division ratio of N (N is a multiple of 2) to generate an output signal; and a feedback circuit adjusting the output signal of the first frequency divider for the first frequency divider to output a frequency signal in a desired band and feeding back the adjusted signal to the feedback terminal of the mixer unit.
摘要翻译：提供了一种反馈电路，包括：产生振荡频率信号的振荡器; 具有输入端子，反馈端子和输出端子的混频器单元，并且通过输出端子输出频率信号，通过将反馈信号的频率加到或减去通过反馈端子输入的频率或频率从频率通过输入端从振荡器输入的振荡频率信号; 第一分频器，以N的分频比（N为2的倍数）分频从混频器单元输出的频率信号，以产生输出信号; 以及反馈电路，调整第一分频器的第一分频器的输出信号，以输出所需频带中的频率信号，并将调整后的信号反馈到混频器单元的反馈端。

30. 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。

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