公开(公告)号：US07514980B2

公开(公告)日：2009-04-07

申请号：US11420728

申请日：2006-05-26

申请人： Jeong Ki Choi ,  Won Jin Baek ,  Hyun Hwan Yoo ,  Seung Min Oh

发明人： Jeong Ki Choi ,  Won Jin Baek ,  Hyun Hwan Yoo ,  Seung Min Oh

IPC分类号： G06F7/556 ,  G06G7/20 ,  G06G7/24

CPC分类号： H03G7/001

摘要： The present invention relates to an exponential function generator which is realized with only CMOS element without BJT element, not limited by the physical properties of the element or a square circuit, and not complicated in its configuration, and a variable gain amplifier using the same. The exponential function generator includes a voltage-current converter, 1st to nth curve generators for mirroring the current from the voltage-current converter, outputting a current adjusted according to a predetermined ratio, and an output end for outputting the sum of the current from the 1st to nth curve generators. The exponential current generator is configured to generate the current exponentially adjusted according to the control voltage.

摘要翻译： 本发明涉及一种仅使用没有BJT元件的CMOS元件实现的指数函数发生器，不受元件或平方电路的物理特性限制，并且其结构不复杂，以及使用其的可变增益放大器。 指数函数发生器包括电压 - 电流转换器，用于镜像来自电压 - 电流转换器的电流的第1至第n曲线发生器，输出根据预定比率调节的电流，以及输出端，用于输出来自 第1〜第n曲线发生器。 指数电流发生器被配置为根据控制电压产生指数调节的电流。

公开(公告)号：US20050048936A1

公开(公告)日：2005-03-03

申请号：US10695758

申请日：2003-10-30

申请人： Young Jin Lee ,  Hyo Seok Kwon ,  Won Jin Baek ,  Jin Taek Lee ,  Hyun Hwan Yoo ,  Jeong Ki Choi

发明人： Young Jin Lee ,  Hyo Seok Kwon ,  Won Jin Baek ,  Jin Taek Lee ,  Hyun Hwan Yoo ,  Jeong Ki Choi

IPC分类号： H04N5/50 ,  H03J1/00 ,  H01Q11/12

CPC分类号： H03J1/0041 ,  H03J2200/02

摘要： Disclosed herein is a digital automatic fine tuning method and apparatus, which is capable of detecting a difference between a nominal frequency and an intermediate frequency generated in a tuner using a counter, and applying the counted data of the counter as a fine tuning value for the intermediate frequency without using a decoder by controlling the reset and preset operations of the counter that counts the frequency of the intermediate frequency.

摘要翻译： 这里公开了一种数字自动微调方法和装置，其能够使用计数器检测在调谐器中产生的标称频率和中频之间的差异，并将计数器的计数数据应用于微调值 通过控制对中频的频率进行计数的计数器的复位和预置操作而不使用解码器的中频。

公开(公告)号：US07076221B2

公开(公告)日：2006-07-11

申请号：US10695758

申请日：2003-10-30

申请人： Young Jin Lee ,  Hyo Seok Kwon ,  Won Jin Baek ,  Jin Taek Lee ,  Hyun Hwan Yoo ,  Jeong Ki Choi

发明人： Young Jin Lee ,  Hyo Seok Kwon ,  Won Jin Baek ,  Jin Taek Lee ,  Hyun Hwan Yoo ,  Jeong Ki Choi

IPC分类号： H04B1/18 ,  H04N5/50

CPC分类号： H03J1/0041 ,  H03J2200/02

摘要： Disclosed herein is a digital automatic fine tuning method and apparatus, which is capable of detecting a difference between a nominal frequency and an intermediate frequency generated in a tuner using a counter, and applying the counted data of the counter as a fine tuning value for the intermediate frequency without using a decoder by controlling the reset and preset operations of the counter that counts the frequency of the intermediate frequency.

摘要翻译： 这里公开了一种数字自动微调方法和装置，其能够使用计数器检测在调谐器中产生的标称频率和中频之间的差异，并将计数器的计数数据应用于微调值 通过控制对中频的频率进行计数的计数器的复位和预置操作而不使用解码器的中频。

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。

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。

公开(公告)号：US20130120048A1

公开(公告)日：2013-05-16

申请号：US13619117

申请日：2012-09-14

申请人： Yoo Sam NA ,  Hyun Hwan Yoo

发明人： Yoo Sam NA ,  Hyun Hwan Yoo

IPC分类号： H03L5/00

CPC分类号： H03H7/0153 ,  H03F3/189 ,  H03F2200/252 ,  H03F2200/294 ,  H03F2200/42

摘要： There is provided a DC offset cancellation circuit including: a capacitor circuit unit including at least one capacitor connected between an input terminal and an input of an amplifier; a MOSFET circuit unit including a plurality of MOSFETs connected in series between a first connection node connected to a predetermined one of both terminals of the capacitor circuit unit and a ground and operating in a linear region; and a switching circuit unit including a plurality of switch elements for selecting several MOSFETs previously selected from among the plurality of MOSFETs of the MOSFET circuit unit, respectively.

摘要翻译： 提供了一种DC偏移消除电路，包括：电容器电路单元，包括连接在输入端和放大器的输入端之间的至少一个电容器; MOSFET电路单元，包括串联连接到电容器电路单元的两个端子中的预定的一个的第一连接节点和接地并在线性区域中操作的多个MOSFET; 以及开关电路单元，其包括分别用于选择从MOSFET电路单元的多个MOSFET中先前选择的多个MOSFET的多个开关元件。

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。

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。

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。

公开(公告)号：US20090058524A1

公开(公告)日：2009-03-05

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： H03F3/45

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。