公开(公告)号：US07432768B2

公开(公告)日：2008-10-07

申请号：US10572901

申请日：2004-06-22

申请人： Seon Ho Han ,  Jin Ho Han ,  Mun Yang Park

发明人： Seon Ho Han ,  Jin Ho Han ,  Mun Yang Park

IPC分类号： H03L7/00

CPC分类号： H03B5/1841 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/124 ,  H03B5/1265 ,  H03B5/1293

摘要： Provided are a voltage controlled digital analog oscillator and a frequency synthesizer using the same, the oscillator comprising an oscillator having a frequency of an output signal being determined by a voltage inputted to an analog input end and a digital value inputted to a digital input end; and a digital tuner for comparing the voltage inputted to the analog input end to first and second threshold voltages and changing the digital value inputted to the digital input end according to the result, whereby it is possible to obtain a broadband frequency output with less noise.

摘要翻译： 提供一种电压控制数字模拟振荡器和使用该振荡器的频率合成器，该振荡器包括具有由输入到模拟输入端的电压和输入到数字输入端的数字值确定输出信号频率的振荡器; 以及数字调谐器，用于将输入到模拟输入端的电压与第一和第二阈值电压进行比较，并根据结果改变输入到数字输入端的数字值，由此可以获得具有较小噪声的宽带频率输出。

公开(公告)号：US07233204B2

公开(公告)日：2007-06-19

申请号：US10902678

申请日：2004-07-28

申请人： Young Ho Kim ,  Cheon Soo Kim ,  Mun Yang Park

发明人： Young Ho Kim ,  Cheon Soo Kim ,  Mun Yang Park

IPC分类号： H03F3/45

CPC分类号： H03F1/3211 ,  H03F2200/331

摘要： Provided is a method of acquiring a high linear characteristic and a low distortion in a transconductor (operational transconductance amplifier), especially, in a triode region type transconductor among CMOS transconductors. A resistance is inserted in a source or a drain of an input triode transistor. The transconductor has a simple circuit structure, and has a large linear region, constant transconductance and low total harmonic distortion (THD) characteristic within an error region.

摘要翻译： 提供了一种在跨导体（运算跨导放大器）中获得高线性特性和低失真的方法，特别是在CMOS跨导体中的三极管区域型跨导体中。 电阻被插入到输入三极管晶体管的源极或漏极中。 跨导体具有简单的电路结构，并且在误差区域内具有大的线性区域，恒定的跨导和低的总谐波失真（THD）特性。

公开(公告)号：US07199660B2

公开(公告)日：2007-04-03

申请号：US10730832

申请日：2003-12-08

申请人： Chong Ki Kwon ,  Gyu Hyung Cho ,  Mun Yang Park ,  Jong Dae Kim

发明人： Chong Ki Kwon ,  Gyu Hyung Cho ,  Mun Yang Park ,  Jong Dae Kim

IPC分类号： H03F3/45

CPC分类号： H03F3/45179 ,  H03G1/0023

摘要： Disclosed is a CMOS variable gain amplifier (VGA). The variable gain amplifier comprises a voltage-current converter for converting voltages of a wide input range into currents, a current shared circuit for receiving the currents from the voltage-current converter and controlling values of output currents depending on first and second control voltages, and a current-voltage converter for converting the output currents from the current shared circuit into differential voltages depending on a bias voltage in order to obtain a variable gain. The voltage amplifier having a variable gain is provided by controlling the value of the output current of the drain terminal against the gate voltage of the NMOS transistor constituting the current shared circuit. Therefore, an integrated circuit (IC) type variable gain amplifier operating a high speed at a low supply voltage can be obtained.

摘要翻译： 公开了一种CMOS可变增益放大器（VGA）。 可变增益放大器包括用于将宽输入范围的电压转换为电流的电压 - 电流转换器，用于接收来自电压 - 电流转换器的电流的电流共享电路，以及根据第一和第二控制电压控制输出电流的值;以及 电流 - 电压转换器，用于根据偏置电压将来自当前共享电路的输出电流转换成差分电压，以获得可变增益。 具有可变增益的电压放大器是通过根据构成当前共享电路的NMOS晶体管的栅极电压控制漏极端子的输出电流的值来提供的。 因此，可以获得在低电源电压下高速运行的集成电路（IC）型可变增益放大器。

公开(公告)号：US20070030080A1

公开(公告)日：2007-02-08

申请号：US10572901

申请日：2004-06-22

申请人： Seon Ho Han ,  Jin Ho Han ,  Mun Yang Park

发明人： Seon Ho Han ,  Jin Ho Han ,  Mun Yang Park

IPC分类号： H03L7/00

CPC分类号： H03B5/1841 ,  H03B5/1215 ,  H03B5/1228 ,  H03B5/124 ,  H03B5/1265 ,  H03B5/1293

摘要： Provided are a voltage controlled digital analog oscillator and a frequency synthesizer using the same, the oscillator comprising an oscillator having a frequency of an output signal being determined by a voltage inputted to an analog input end and a digital value inputted to a digital input end; and a digital tuner for comparing the voltage inputted to the analog input end to first and second threshold voltages and changing the digital value inputted to the digital input end according to the result, whereby it is possible to obtain a broadband frequency output with less noise.

摘要翻译： 提供一种电压控制数字模拟振荡器和使用该振荡器的频率合成器，该振荡器包括具有由输入到模拟输入端的电压和输入到数字输入端的数字值确定输出信号频率的振荡器; 以及数字调谐器，用于将输入到模拟输入端的电压与第一和第二阈值电压进行比较，并根据结果改变输入到数字输入端的数字值，由此可以获得具有较小噪声的宽带频率输出。

公开(公告)号：US07193468B2

公开(公告)日：2007-03-20

申请号：US10846082

申请日：2004-05-14

申请人： Jong Kee Kwon ,  Gyu Hyeong Cho ,  Mun Yang Park ,  Jong Dae Kim

发明人： Jong Kee Kwon ,  Gyu Hyeong Cho ,  Mun Yang Park ,  Jong Dae Kim

IPC分类号： H03F3/45

CPC分类号： H03F3/45183 ,  H03F3/45179 ,  H03F2203/45644

摘要： Provided is an active load circuit of a voltage gain amplifier, which allows a high voltage gain with a low supply voltage operation in high-frequency range. The active load circuit includes a PMOS transistor which is connected between the amplifying unit and a power supply voltage and functions as a load element in a low frequency range; a negative feedback buffering unit which is connected to the gate of the PMOS transistor and functions as a common drain amplifier to stabilize the output voltage of the voltage gain amplifier and drive the voltage gain amplifier at a low voltage; and a capacitor which is connected to the negative feedback buffering unit and compensates for both an impedance and a frequency characteristics when the voltage gain amplifier operates in a high frequency range.

摘要翻译： 提供了一种电压增益放大器的有源负载电路，其允许在高频范围内具有低电源电压操作的高电压增益。 有源负载电路包括连接在放大单元和电源电压之间并用作低频范围内的负载元件的PMOS晶体管; 负反馈缓冲单元，其连接到PMOS晶体管的栅极并用作公共漏极放大器，以稳定电压增益放大器的输出电压并以低电压驱动电压增益放大器; 以及电容器，其连接到负反馈缓冲单元，并且当电压增益放大器在高频范围内工作时，补偿阻抗和频率特性两者。

公开(公告)号：US07193466B2

公开(公告)日：2007-03-20

申请号：US11019765

申请日：2004-12-20

申请人： Young Ho Kim ,  Mun Yang Park

发明人： Young Ho Kim ,  Mun Yang Park

IPC分类号： H03F3/45

CPC分类号： H03F3/45188 ,  H03F3/45659 ,  H03F3/45717 ,  H03F2203/45356 ,  H03F2203/45394 ,  H03F2203/45574

摘要： Provided is a transconductor capable of eliminating a direct current (DC) offset component of a signal and compensating a mismatch of the signal. The transconductor includes amplifiers of simple circuit structures, and a common mode control DC offset elimination circuit. The transconductor includes a common mode control DC offset elimination circuit unit receiving input/output voltages to stabilize the current supplying and the output DC value, a first amplifier and a second amplifier reducing a mismatch in a transconductor circuit and increasing an output resistance, in order to prevent a signal distortion or a wrong operation of the circuit that is caused by the mismatch signal and unstable DC voltage.

摘要翻译： 提供了能够消除信号的直流（DC）偏移分量并补偿信号不匹配的跨导体。 跨导体包括简单电路结构的放大器和共模控制DC偏移消除电路。 跨导体包括共模控制DC偏移消除电路单元，接收用于稳定电流供应和输出DC值的输入/输出电压，第一放大器和第二放大器，以减少跨导电路中的失配并增加输出电阻，按顺序 以防止由失配信号和不稳定的直流电压引起的电路的信号失真或错误的操作。

公开(公告)号：US06989716B2

公开(公告)日：2006-01-24

申请号：US10732720

申请日：2003-12-09

申请人： Chong Ki Kwon ,  Gyu Hyung Cho ,  Mun Yang Park ,  Jong Dae Kim

发明人： Chong Ki Kwon ,  Gyu Hyung Cho ,  Mun Yang Park ,  Jong Dae Kim

IPC分类号： H03F3/45

CPC分类号： H03G1/0023 ,  H03F3/4508

摘要： Disclosed is a variable gain amplifier having low voltage, low distortion, high linearity and wideband operating characteristics. The variable gain amplifier comprises an input signal provision and variable gain controller for receiving first and second input signals via a differential pair of a cascode shape and amplifying a difference signal of the first and second input signals to output first and second differential signals, wherein the controller controls a variable voltage gain of the difference signal according to a gain control voltage signal, and a current/voltage converter for receiving the first and second differential signals outputted from the input signal provision and variable gain controller and converting the first and second differential signals into first and second output voltages of a voltage inputted type depending on first and second bias voltages, wherein the input signal provision and variable gain controller has a construction of a current inputted type or a voltage inputted type along with negative feedback connection.

摘要翻译： 公开了具有低电压，低失真，高线性度和宽带工作特性的可变增益放大器。 可变增益放大器包括输入信号提供和可变增益控制器，用于通过级联形状的差分对接收第一和第二输入信号，并且放大第一和第二输入信号的差分信号以输出第一和第二差分信号，其中， 控制器根据增益控制电压信号控制差分信号的可变电压增益;以及电流/电压转换器，用于接收从输入信号提供和可变增益控制器输出的第一和第二差分信号，并将第一和第二差分信号 根据第一和第二偏置电压，输入电压输入型的第一和第二输出电压，其中输入信号提供和可变增益控制器具有电流输入类型或电压输入类型以及负反馈连接的结构。

公开(公告)号：US07046089B2

公开(公告)日：2006-05-16

申请号：US10731610

申请日：2003-12-08

申请人： Chong Ki Kwon ,  Gyu Hyung Cho ,  Mun Yang Park ,  Jong Dae Kim

发明人： Chong Ki Kwon ,  Gyu Hyung Cho ,  Mun Yang Park ,  Jong Dae Kim

IPC分类号： H03F3/45

CPC分类号： H03G1/0029 ,  H03F1/3211 ,  H03F3/45188 ,  H03F2203/45288 ,  H03F2203/45398 ,  H03F2203/45702

摘要： Disclosed is a CMOS variable gain amplifier. The variable gain amplifier comprises a first means for first and second differential input voltages, a second means for controlling its transconductance to generate an output current according to a control voltage, a third means for a bias voltage to generate bias current by current mirror, and to supply a stabilized bias current to the second means using the replica current, and a fourth means for generating an output voltage with a variable gain according to control voltage by its output current generated in the second means. Therefore, the present invention provides a function of controlling low distortion and high linearity in low voltage and a high-speed operation by the supply of a stabilized sharing current bias, and can control a voltage gain in a wide range by the control voltage.

摘要翻译： 公开了一种CMOS可变增益放大器。 可变增益放大器包括用于第一和第二差分输入电压的第一装置，用于根据控制电压控制其跨导以产生输出电流的第二装置，用于由电流镜产生偏置电流的偏置电压的第三装置，以及 使用复制电流向第二装置提供稳定的偏置电流;以及第四装置，用于根据控制电压通过其在第二装置中产生的输出电流产生具有可变增益的输出电压。 因此，本发明提供了通过提供稳定的共享电流偏压来控制低电压和高速操作的低失真和高线性度的功能，并且可以通过控制电压来控制宽范围内的电压增益。

公开(公告)号：US06950051B2

公开(公告)日：2005-09-27

申请号：US10872530

申请日：2004-06-22

申请人： Seung Chul Lee ,  Min Hyung Cho ,  Mun Yang Park

发明人： Seung Chul Lee ,  Min Hyung Cho ,  Mun Yang Park

IPC分类号： H03M1/16 ,  H03M1/36 ,  H03M1/38

CPC分类号： H03M1/141

摘要： Provided is a pipelined folding analog-digital converter, the pipelined folding analog-digital converter comprising: a first sample-and-hold unit that samples and outputs a number of analog input voltages; a reference voltage generator that generates a number of reference voltages; a pre-amplifier that amplifies and outputs a number of values subtracting each reference voltage from the outputs of the first sample-and-hold unit, wherein an offset effect due to asymmetry of the amplifier is eliminated; a first folder that folds and outputs a number of outputs of the pre-amplifier; a second sample-and-hold unit that samples and outputs a number of outputs of the first folder; a second folder that folds and outputs a number of outputs of the second sample-and-hold unit; and a comparator that performs a comparison operation between the outputs of the pre-amplifier and the output values of the second folder to find a digital output value, whereby the offset caused by the device mismatch is removed, so that it is possible to realize a high-resolution analog-digital converter.

摘要翻译： 提供了一种流水线折叠模拟数字转换器，该流水线折叠模数转换器包括：第一采样保持单元，其对多个模拟输入电压进行采样和输出; 产生多个参考电压的参考电压发生器; 前置放大器，其放大并输出从所述第一采样保持单元的输出中减去每个参考电压的多个值，其中消除了由于放大器的不对称引起的偏移影响; 折叠并输出前置放大器的多个输出的第一文件夹; 第二采样保持单元，其对所述第一文件夹的多个输出进行采样和输出; 折叠并输出第二采样保持单元的多个输出的第二文件夹; 以及比较器，其执行前置放大器的输出和第二文件夹的输出值之间的比较操作以找到数字输出值，由此消除由于器件失配引起的偏移，从而可以实现 高分辨率模拟数字转换器。