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1. 发明授权

US08531243B2 Bias controlling apparatus 有权
标题翻译：偏压控制装置
公开(公告)号：US08531243B2
公开(公告)日：2013-09-10
申请号：US13370227
申请日：2012-02-09
申请人： Hyun Hwan Yoo , Yoo Hwan Kim , Yoo Sam Na
发明人： Hyun Hwan Yoo , Yoo Hwan Kim , Yoo Sam Na
IPC分类号： H03F3/04
CPC分类号： H03F1/301 , H03F3/193 , H03F3/245 , H03F2200/447 , H03F2200/555
摘要： The present invention includes: a temperature compensation circuit for generating a digital signal corresponding to a temperature of a transistor and outputting a compensation bias current obtained by adding a control current to a reference bias current or by subtracting the control signal from the reference bias current using the generated digital signal; a characteristics compensation circuit for detecting a characteristics error of a mirror transistor connected to the transistor in parallel and for outputting a compensation signal to compensate the characteristics error; and a bias compensation circuit for compensating a bias power applied to the transistor using the compensation bias current and the compensation signal to output the compensated bias power. The present invention is capable of improving the performance of the transistor.
摘要翻译：本发明包括：温度补偿电路，用于产生对应于晶体管的温度的数字信号，并输出通过将控制电流加到参考偏置电流而获得的补偿偏置电流，或者通过使用生成的数字信号; 特性补偿电路，用于并联检测连接到晶体管的反射镜晶体管的特性误差，并输出补偿信号以补偿特性误差; 以及偏置补偿电路，用于使用补偿偏置电流和补偿信号来补偿施加到晶体管的偏置功率，以输出补偿的偏置功率。本发明能够提高晶体管的性能。

2. 发明授权

US08093948B2 Power amplifier 有权
标题翻译：功率放大器
公开(公告)号：US08093948B2
公开(公告)日：2012-01-10
申请号：US12883941
申请日：2010-09-16
申请人： Yoo Hwan Kim , Yoo Sam Na , Byeong Hak Jo , Hyun Hwan Yoo
发明人： Yoo Hwan Kim , Yoo Sam Na , Byeong Hak Jo , Hyun Hwan Yoo
IPC分类号： H03G3/20
CPC分类号： H03F1/0266 , H03F1/0272 , H03F1/56 , H03F2200/222 , H03F2200/387 , H03F2200/435 , H03G3/3042
摘要： There is provided a power amplifier that can maintain a constant gain by detecting a level of a signal being input and a level of a signal being output. A power amplifier according to an aspect of the invention may include: an amplification section having at least one amplification unit amplifying an input signal according to an adjustable gain to thereby output the amplified input signal; a detection section detecting signal levels of an input signal and an output signal of the amplification section; and a gain maintaining section controlling a bias power according to a detection result of the detection section so that a gain of the amplification section is maintained within a predetermined gain range.
摘要翻译：提供了一种功率放大器，其可以通过检测输入的信号的电平和正在输出的信号的电平来保持恒定的增益。根据本发明的一个方面的功率放大器可以包括：放大部分，具有至少一个放大单元，根据可调增益放大输入信号，从而输出放大的输入信号; 检测部，检测所述放大部的输入信号和输出信号的信号电平; 以及增益维持部，根据检测部的检测结果来控制偏置功率，使得放大部的增益保持在规定的增益范围内。

3. 发明申请

US20130082777A1 BIAS CONTROLLING APPARATUS 有权
标题翻译：偏差控制装置
公开(公告)号：US20130082777A1
公开(公告)日：2013-04-04
申请号：US13370227
申请日：2012-02-09
申请人： Hyun Hwan Yoo , Yoo Hwan Kim , Yoo Sam Na
发明人： Hyun Hwan Yoo , Yoo Hwan Kim , Yoo Sam Na
IPC分类号： H03F3/45
CPC分类号： H03F1/301 , H03F3/193 , H03F3/245 , H03F2200/447 , H03F2200/555
摘要： The present invention includes: a temperature compensation circuit for generating a digital signal corresponding to a temperature of a transistor and outputting a compensation bias current obtained by adding a control current to a reference bias current or by subtracting the control signal from the reference bias current using the generated digital signal; a characteristics compensation circuit for detecting a characteristics error of a mirror transistor connected to the transistor in parallel and for outputting a compensation signal to compensate the characteristics error; and a bias compensation circuit for compensating a bias power applied to the transistor using the compensation bias current and the compensation signal to output the compensated bias power. The present invention is capable of improving the performance of the transistor.
摘要翻译：本发明包括：温度补偿电路，用于产生对应于晶体管的温度的数字信号，并输出通过将控制电流加到参考偏置电流而获得的补偿偏置电流，或者通过使用生成的数字信号; 特性补偿电路，用于并联检测连接到晶体管的反射镜晶体管的特性误差，并输出补偿信号以补偿特性误差; 以及偏置补偿电路，用于使用补偿偏置电流和补偿信号来补偿施加到晶体管的偏置功率，以输出补偿的偏置功率。本发明能够提高晶体管的性能。

4. 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。

5. 发明授权

US08055228B2 Received signal strength indicator self-calibrating gain of limiter 失效
标题翻译：接收信号强度指示器自校准增益的限制器
公开(公告)号：US08055228B2
公开(公告)日：2011-11-08
申请号：US12200924
申请日：2008-08-28
申请人： Kyoung Seok Park , Hyun Hwan Yoo , Yoo Sam Na
发明人： Kyoung Seok Park , Hyun Hwan Yoo , Yoo Sam Na
IPC分类号： H04B17/00
CPC分类号： H03G7/001 , H03F3/45183 , H03F3/45475 , H03F2200/78 , H03F2203/45048 , H03F2203/45138 , H03F2203/45466 , H03G3/3052 , H04B17/21 , H04B17/318
摘要： A received signal strength indicator according to an aspect of the invention may include a gain calibration section including a calibration limiter, a calibration load unit and a comparison and adjustment unit. The calibration load unit is connected to output terminals of the calibration limiter, and generating an output differential voltage whose gain is a unit gain when a predetermined input differential voltage is input to the calibration limiter, and a comparison and adjustment unit comparing the input differential voltage with the output differential voltage, and adjusting an output of a variable current source included in the calibration limiter so that the input differential voltage becomes identical to the output differential voltage.
摘要翻译：根据本发明的一个方面的接收信号强度指示器可以包括增益校准部分，其包括校准限制器，校准加载单元和比较和调整单元。校准负载单元连接到校准限制器的输出端子，并且当预定的输入差分电压被输入到校准限制器时产生增益为单位增益的输出差分电压，以及比较和调整单元，将输入差分电压输出差分电压，并且调节校准限制器中包括的可变电流源的输出，使得输入差分电压变得与输出差分电压相同。

6. 发明授权

US07973606B2 Fractional-N frequency synthesizer and method thereof 有权
标题翻译：分数N频率合成器及其方法
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。

7. 发明授权

US08031002B2 Buffer amplifier 有权
标题翻译：缓冲放大器
公开(公告)号：US08031002B2
公开(公告)日：2011-10-04
申请号：US12504127
申请日：2009-07-16
申请人： Byeong Hak Jo , Yoo Sam Na , Yoo Hwan Kim
发明人： Byeong Hak Jo , Yoo Sam Na , Yoo Hwan Kim
IPC分类号： H03F3/26
CPC分类号： H03F1/301 , H03F3/3028 , H03F2200/18 , H03F2200/447
摘要： A buffer amplifier has high input impedance and is less affected by temperature by supplying independent bias power to each of amplification units. The buffer amplifier includes a bias supply unit supplying bias power having a preset voltage level, an amplification unit receiving preset driving power and the bias power from the bias supply unit to amplify an input signal, and a compensation unit compensating for current unbalance of the driving power supplied to the amplification unit.
摘要翻译：缓冲放大器具有高输入阻抗，并且通过向每个放大单元提供独立的偏置功率而受温度影响较小。缓冲放大器包括提供具有预设电压电平的偏置功率的偏置电源单元，接收预设驱动功率的放大单元和来自偏置电源单元的偏置功率以放大输入信号;以及补偿单元，用于补偿电流的当前不平衡提供给放大单元的功率。

8. 发明申请

US20110032011A1 AUTO FREQUENCY CALIBRATOR, METHOD THEREOF AND FREQUENCY SYNTHESIZER USING IT 审中-公开
标题翻译：自动频率校准器，其使用方法和频率合成器
公开(公告)号：US20110032011A1
公开(公告)日：2011-02-10
申请号：US12617151
申请日：2009-11-12
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： H03L7/00
CPC分类号： H03L7/1976 , H03L7/099
摘要： The present invention relates to and auto frequency calibrator, a method thereof, and a frequency synthesizer using it. The auto frequency calibrator includes a capacitor bank selector that is operated as an open loop and compares a frequency signal having integer-divided reference frequency with the reference frequency signal to select a capacitor bank corresponding to an output frequency; and a capacitor bank controller that is operated as a closed loop when the capacitor bank is selected and compares the output voltage corresponding to the output frequency with a preset voltage range to control the capacitor bank selected in the capacitor bank selector.
摘要翻译：本发明涉及自动频率校准器及其方法，以及使用它的频率合成器。自动频率校准器包括作为开环操作的电容器组选择器，将具有整数分频参考频率的频率信号与参考频率信号进行比较，以选择对应于输出频率的电容器组; 以及电容器组控制器，当选择电容器组时作为闭环操作，并将与输出频率相对应的输出电压与预设电压范围进行比较，以控制在电容器组选择器中选择的电容器组。

9. 发明申请

US20100321120A1 FRACTIONAL-N FREQUENCY SYNTHESIZER AND METHOD THEREOF 有权
标题翻译：其他N频率合成器及其方法
公开(公告)号：US20100321120A1
公开(公告)日：2010-12-23
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： H03L7/08
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。

10. 发明申请

US20100134188A1 BUFFER AMPLIFIER 有权
标题翻译：缓冲放大器
公开(公告)号：US20100134188A1
公开(公告)日：2010-06-03
申请号：US12504127
申请日：2009-07-16
申请人： Byeong Hak JO , Yoo Sam Na , Yoo Hwan Kim
发明人： Byeong Hak JO , Yoo Sam Na , Yoo Hwan Kim
IPC分类号： H03F3/16 , H03F1/02 , H03F1/30 , H03F3/68
CPC分类号： H03F1/301 , H03F3/3028 , H03F2200/18 , H03F2200/447
摘要： A buffer amplifier has high input impedance and is less affected by temperature by supplying independent bias power to each of amplification units. The buffer amplifier includes a bias supply unit supplying bias power having a preset voltage level, an amplification unit receiving preset driving power and the bias power from the bias supply unit to amplify an input signal, and a compensation unit compensating for current unbalance of the driving power supplied to the amplification unit.
摘要翻译：缓冲放大器具有高输入阻抗，并且通过向每个放大单元提供独立的偏置功率而受温度影响较小。缓冲放大器包括提供具有预设电压电平的偏置功率的偏置电源单元，接收预设驱动功率的放大单元和来自偏置电源单元的偏置功率以放大输入信号;以及补偿单元，用于补偿电流的当前不平衡提供给放大单元的功率。

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