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1. 发明申请

US20110304398A1 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：US20110304398A1
公开(公告)日：2011-12-15
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。

2. 发明申请

US20110156813A1 POWER AMPLIFIER 有权
标题翻译：功率放大器
公开(公告)号：US20110156813A1
公开(公告)日：2011-06-30
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： H03F3/68 , 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

US20110133834A1 POWER AMPLIFIER 有权
标题翻译：功率放大器
公开(公告)号：US20110133834A1
公开(公告)日：2011-06-09
申请号：US12823772
申请日：2010-06-25
申请人： Byeong Hak JO , Yoo Sam NA , Moon Sun KIM , Yoo Hwan KIM
发明人： Byeong Hak JO , Yoo Sam NA , Moon 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。

4. 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。

5. 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。

6. 发明申请

US20070120611A1 Phase frequency detector capable of improving noise characteristics 失效
标题翻译：相位检波器能够改善噪声特性
公开(公告)号：US20070120611A1
公开(公告)日：2007-05-31
申请号：US11549046
申请日：2006-10-12
申请人： Yoo Hwan KIM , Ki Sung KWON , Soo Woong LEE , Jin Taek LEE , Yo Sub MOON , Sung Cheol SHIN , Gyu Suck KIM
发明人： Yoo Hwan KIM , Ki Sung KWON , Soo Woong LEE , Jin Taek LEE , Yo Sub MOON , Sung Cheol SHIN , Gyu Suck KIM
IPC分类号： H03L7/00
CPC分类号： H03L7/087 , H03D13/003 , H03D13/004 , H03L7/085 , H03L7/18
摘要： A phase frequency detector for improving in-band phase noise characteristics of a PLL is disclosed. The phase frequency detector compares a reference frequency with a division frequency created by dividing an output frequency of a voltage controlled oscillator (VCO) by a predetermined division ratio, creates a phase-difference signal corresponding to a phase difference between the reference frequency and the division frequency, and improves noise characteristics.
摘要翻译：公开了一种用于改善PLL的带内相位噪声特性的相位频率检测器。相位频率检测器将参考频率与通过将压控振荡器（VCO）的输出频率除以预定分频比而产生的分频，将与基准频率和分频之间的相位差相对应的相位差信号进行比较频率，并改善噪声特性。

7. 发明申请

US20080180138A1 METHOD OF DETERMINING FRACTIONAL DIVIDE RATIO USING SIGMA-DELTA MODULATOR 审中-公开
标题翻译：使用SIGMA-DELTA调制器确定分数分辨率的方法
公开(公告)号：US20080180138A1
公开(公告)日：2008-07-31
申请号：US11533132
申请日：2006-09-19
申请人： Sung Cheol SHIN , Yoo Hwan KIM , Ki Sung KWON , Yo Sub MOON
发明人： Sung Cheol SHIN , Yoo Hwan KIM , Ki Sung KWON , Yo Sub MOON
IPC分类号： H03K21/00
CPC分类号： H03L7/1976
摘要： The invention relates to method of determining a fractional division ratio using a sigma-delta modulator. In this method, the fractional division ratio of the sigma-delta modulator is set as k/q, where k is an integer input value of the sigma-delta modulator, and q is a value preset to determine a predetermined frequency resolution. A spur generated from the voltage controller oscillator according to the variation of k is measured while the value k is varied. When the spur takes place at a certain value of k where a frequency is lower than a predetermined reference frequency, the fractional division ratio is reset as k/(q+1) or k/(q−1) for the certain value of k. The reset fractional division ratio is provided to the divider.
摘要翻译：本发明涉及使用Σ-Δ调制器确定分数分数比的方法。在该方法中，将Σ-Δ调制器的分数除数设定为k / q，其中k是Σ-Δ调制器的整数输入值，q是为了确定预定的频率分辨率而预设的值。测量根据k的变化从电压控制器振荡器产生的杂散，同时改变值k。当杂散发生在频率低于预定参考频率的k的某个值时，对于某个k值，分数比被复位为k /（q + 1）或k /（q-1）。复位分数除法提供给分频器。

8. 发明申请

US20090280762A1 HIGH-ORDER HARMONIC REJECTION MIXER USING CURRENT STEERING TECHNIQUE 审中-公开
标题翻译：使用电流转向技术的高阶谐波抑制混频器
公开(公告)号：US20090280762A1
公开(公告)日：2009-11-12
申请号：US12259619
申请日：2008-10-28
申请人： Kyoung Seok PARK , Nam Heung KIM , Jeong Ki CHOI , Yo Sub MOON , Gyu Suck KIM , Seung Won SEO , Yoo Hwan KIM
发明人： Kyoung Seok PARK , Nam Heung KIM , Jeong Ki CHOI , Yo Sub MOON , Gyu Suck KIM , Seung Won SEO , Yoo Hwan KIM
IPC分类号： H04B1/16
CPC分类号： H03D7/1441 , H03D7/1483 , H03D2200/0043 , H03D2200/0086
摘要： A mixer includes, an input current generation unit generating an input current; a first path circuit unit including n number of transistors having sources connected in common to an output node of the input current generation unit; and a second path circuit unit including n number of transistors having sources connected in common to the output node of the input current generation unit, and respectively corresponding to the n number of transistors included in the first path circuit unit. Local oscillator signals sequentially phase-shifted by 180°/n are individually input to gates of the n number of transistors included in the first path circuit unit, and local oscillator signals having opposite phases to the local oscillator signals input to the gates of the corresponding transistors included in the first path circuit unit are individually input to gates of the n number of transistors included in the second path circuit unit.
摘要翻译：混合器包括：输入电流产生单元，其产生输入电流; 包括n个晶体管的第一路径电路单元，其源极共同连接到输入电流产生单元的输出节点; 以及第二路径电路单元，其包括n个晶体管，其源极共同连接到输入电流产生单元的输出节点，并且分别对应于包括在第一路径电路单元中的n个晶体管。顺序相移180°/ n的本地振荡器信号被分别输入到包括在第一路径电路单元中的n个晶体管的栅极，并且与本地振荡器信号相反的本地振荡器信号输入到相应的门包括在第一路径电路单元中的晶体管被单独地输入到包括在第二路径电路单元中的n个晶体管的栅极。

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