公开(公告)号：US20090124221A1

公开(公告)日：2009-05-14

申请号：US12191775

申请日：2008-08-14

申请人： Sang Do CHO ,  Sang Hyun Cho ,  Jin Ho Ko ,  Hak Sun Kim ,  Yoo Sam Na

发明人： Sang Do CHO ,  Sang Hyun Cho ,  Jin Ho Ko ,  Hak Sun Kim ,  Yoo Sam Na

IPC分类号： H04B7/08

CPC分类号： G01S19/33

摘要： There is provided a dual band receiver receiving frequency signals in different bands, the receiver including: a first down converter converting a first band signal into a first intermediate frequency signal; a second down converter converting a second band signal into a second intermediate frequency signal; a first voltage control oscillator supplying a first oscillation frequency to the first down converter; a second voltage control oscillator supplying a second oscillation frequency to the second down converter; a first filter passing the first intermediate frequency signal within a desired bandwidth; a second filter passing the second intermediate frequency signal within a desired bandwidth; and a clock generator converting the first oscillation frequency of the first voltage control oscillator into sampling frequencies corresponding to integer multiples of first and second oscillation frequencies and supplying the sampling frequencies to first and second AD converters, respectively.

摘要翻译： 提供接收不同频带的频率信号的双频带接收机，该接收机包括：第一下变换器，将第一频带信号转换为第一中频信号; 将第二频带信号转换成第二中频信号的第二降压转换器; 向第一下变频器提供第一振荡频率的第一压控振荡器; 向第二下变频器提供第二振荡频率的第二压控振荡器; 第一滤波器，在所需带宽内通过所述第一中频信号; 第二滤波器，将第二中频信号通过期望的带宽; 以及时钟发生器，将第一压控振荡器的第一振荡频率转换成与第一和第二振荡频率的整数倍相对应的采样频率，并将采样频率分别提供给第一和第二AD转换器。

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：US08618972B1

公开(公告)日：2013-12-31

申请号：US13620352

申请日：2012-09-14

申请人： Yoo Sam Na ,  Kang Yoon Lee ,  Young Gun Pu ,  Hyung Gu Park ,  Hong Jin Kim ,  Yoo Hwan Kim ,  Dong Su Lee

发明人： Yoo Sam Na ,  Kang Yoon Lee ,  Young Gun Pu ,  Hyung Gu Park ,  Hong Jin Kim ,  Yoo Hwan Kim ,  Dong Su Lee

IPC分类号： H03M1/12

CPC分类号： H03M1/06 ,  H03M1/502

摘要： There are provided an analog-to-digital signal conversion method and apparatus therefor, and a digital phase locked loop circuit including the same. The analog-to-digital signal conversion method may include: generating a first digital output signal having N number of bits by comparing each of N number of delay signals detected from output terminals of N number of delay cells with a reference signal; generating a second digital output signal by comparing an auxiliary delay signal generated by an (N+1)th delay cell with the reference signal; and determining a change in a delay time of each of the N number of delay cells based on the first digital output signal and the second digital output signal.

摘要翻译： 提供了一种模拟 - 数字信号转换方法及其装置，以及包括该数字锁相环电路的数字锁相环电路。 模数信号转换方法可以包括：通过将从N个延迟单元的输出端子检测的N个延迟信号中的每一个与参考信号相比较来产生具有N个比特数的第一数字输出信号; 通过将由第（N + 1）个延迟单元产生的辅助延迟信号与参考信号进行比较来产生第二数字输出信号; 以及基于所述第一数字输出信号和所述第二数字输出信号确定所述N个延迟单元中的每一个的延迟时间的变化。

公开(公告)号：US07953383B2

公开(公告)日：2011-05-31

申请号：US12191775

申请日：2008-08-14

申请人： Sang Do Cho ,  Sang Hyun Cho ,  Jin Ho Ko ,  Hak Sun Kim ,  Yoo Sam Na

发明人： Sang Do Cho ,  Sang Hyun Cho ,  Jin Ho Ko ,  Hak Sun Kim ,  Yoo Sam Na

IPC分类号： H04B1/06

CPC分类号： G01S19/33

摘要： There is provided a dual band receiver receiving frequency signals in different bands, the receiver including: a first down converter converting a first band signal into a first intermediate frequency signal; a second down converter converting a second band signal into a second intermediate frequency signal; a first voltage control oscillator supplying a first oscillation frequency to the first down converter; a second voltage control oscillator supplying a second oscillation frequency to the second down converter; a first filter passing the first intermediate frequency signal within a desired bandwidth; a second filter passing the second intermediate frequency signal within a desired bandwidth; and a clock generator converting the first oscillation frequency of the first voltage control oscillator into sampling frequencies corresponding to integer multiples of first and second oscillation frequencies and supplying the sampling frequencies to first and second AD converters, respectively.

摘要翻译： 提供接收不同频带的频率信号的双频带接收机，该接收机包括：第一下变换器，将第一频带信号转换为第一中频信号; 将第二频带信号转换成第二中频信号的第二降压转换器; 向第一下变频器提供第一振荡频率的第一压控振荡器; 向第二下变频器提供第二振荡频率的第二压控振荡器; 第一滤波器，在所需带宽内通过所述第一中频信号; 第二滤波器，将第二中频信号通过期望的带宽; 以及时钟发生器，将第一压控振荡器的第一振荡频率转换成与第一和第二振荡频率的整数倍相对应的采样频率，并将采样频率分别提供给第一和第二AD转换器。