公开(公告)号：US07646248B2

公开(公告)日：2010-01-12

申请号：US12034544

申请日：2008-02-20

申请人： Youngoo Yang ,  Xi Yao ,  Hyun Chul Park ,  Sung Wook Kwon

发明人： Youngoo Yang ,  Xi Yao ,  Hyun Chul Park ,  Sung Wook Kwon

IPC分类号： H03F3/68

CPC分类号： H03F1/0288 ,  H03F1/56 ,  H03F3/604 ,  H03F2200/15 ,  H03F2200/387 ,  H03F2200/451 ,  H03H7/38

摘要： Disclosed is a Doherty amplifier including a carrier amplifier to perform a signal amplification operation regardless of a level of an input signal, a peaking amplifier to perform an amplification operation, starting from a high power output where a level of an input signal is equal to or greater than a predetermined level, an output combination circuit to combine and output the outputs of the carrier amplifier and the peaking amplifier, and an input division circuit to divide an input signal into the carrier amplifier and the peaking amplifier, the Doherty amplifier including a carrier amplifier output harmonic impedance tuning network installed at a rear end of the carrier amplifier to tune an output harmonic impedance of the carrier amplifier, and a peaking amplifier output harmonic impedance tuning network installed at a rear end of the peaking amplifier to tune an output harmonic impedance of the peaking amplifier.

摘要翻译： 公开了一种Doherty放大器，其包括载波放大器，无论输入信号的电平如何，执行信号放大操作，峰值放大器执行放大操作，从输入信号电平等于或等于的高功率输出开始， 大于预定电平的输出组合电路，用于组合和输出载波放大器和峰值放大器的输出的输出组合电路，以及将输入信号分成载波放大器和峰化放大器的输入分频电路，Doherty放大器包括载波 放大器输出谐波阻抗调谐网络安装在载波放大器的后端，以调谐载波放大器的输出谐波阻抗，以及峰值放大器输出谐波阻抗调谐网络，安装在峰值放大器的后端，以调谐输出谐波阻抗 的峰值放大器。

公开(公告)号：US20090167438A1

公开(公告)日：2009-07-02

申请号：US12034544

申请日：2008-02-20

申请人： Youngoo Yang ,  Xi Yao ,  Hyun Chul Park ,  Sung Wook Kwon

发明人： Youngoo Yang ,  Xi Yao ,  Hyun Chul Park ,  Sung Wook Kwon

IPC分类号： H03F3/68

CPC分类号： H03F1/0288 ,  H03F1/56 ,  H03F3/604 ,  H03F2200/15 ,  H03F2200/387 ,  H03F2200/451 ,  H03H7/38

摘要： Disclosed is a Doherty amplifier which includes a carrier amplifier for always performing a signal amplification operation regardless of a level of an input signal, a peaking amplifier for performing an amplification operation, starting from a high power output where a level of an input signal is equal to or greater than a predetermined level, an output combination circuit for combining and outputting outputs of the carrier amplifier and the peaking amplifier, and an input division circuit for dividing an input signal into the carrier amplifier and the peaking amplifier, the Doherty amplifier including a carrier amplifier output harmonic impedance tuning network which is installed at a rear end of the carrier amplifier so as to tune an output harmonic impedance of the carrier amplifier, and a peaking amplifier output harmonic impedance tuning network which is installed at a rear end of the peaking amplifier so as to tune an output harmonic impedance of the peaking amplifier.

摘要翻译： 公开了一种Doherty放大器，其包括一个载波放大器，无论输入信号的电平如何，始终执行信号放大操作，用于执行放大操作的峰值放大器，从输入信号电平相等的高功率输出开始 达到或大于预定电平的输出组合电路，用于组合和输出载波放大器和峰化放大器的输出的输出组合电路，以及用于将输入信号分成载波放大器和峰值放大器的输入分配电路，Doherty放大器包括 载波放大器输出谐波阻抗调谐网络，安装在载波放大器的后端，以调谐载波放大器的输出谐波阻抗，以及峰值放大器输出谐波阻抗调谐网络，其安装在峰值的后端 放大器，以调谐峰值放大器的输出谐波阻抗。

公开(公告)号：US06757338B1

公开(公告)日：2004-06-29

申请号：US09670217

申请日：2000-09-25

申请人： Bumman Kim ,  Youngoo Yang ,  Young Yun Woo

发明人： Bumman Kim ,  Youngoo Yang ,  Young Yun Woo

IPC分类号： H04K102

CPC分类号： H03F1/3241 ,  H03F1/3294 ,  H03F3/211 ,  H03F2200/198 ,  H04B2001/0425

摘要： A predistortion linearizer for predistorting a radio frequency(RF) signal includes a power divider, an even order harmonics generator and a predistortion component producer. The power divider divides the RF signal into a first and a second RF signals. The even order harmonics generator, responsive to the second RF signal, generates one or more even order harmonics of the fundamental frequencies. And, the predistortion component producer produces one or more odd order harmonics from the fundamental frequencies and the even order harmonics to provide a predistorted RF signal including the fundamental frequencies and the odd order harmonics. The power divider divides the RF signal into first and second RF signals and delays the first RF signal.

摘要翻译： 用于预失真射频（RF）信号的预失真线性化装置包括功率分配器，偶次谐波发生器和预失真分量生成器。 功率分配器将RF信号分成第一和第二RF信号。 响应于第二RF信号的偶次谐波发生器产生基频的一个或多个偶次谐波。 并且，预失真分量生成器从基频和偶次谐波产生一个或多个奇次谐波，以提供包括基频和奇次谐波的预失真RF信号。 功率分配器将RF信号分成第一和第二RF信号并延迟第一RF信号。

公开(公告)号：US20120163049A1

公开(公告)日：2012-06-28

申请号：US13335208

申请日：2011-12-22

申请人： Sung-chan JUNG ,  Min-geun SONG ,  Hyung-chul KIM ,  Youngoo YANG

发明人： Sung-chan JUNG ,  Min-geun SONG ,  Hyung-chul KIM ,  Youngoo YANG

IPC分类号： H02M7/04

CPC分类号： H02J50/20 ,  H02J17/00

摘要： An apparatus for collecting wireless is provided. The apparatus includes an antenna and a collection circuit. The antenna generates an alternating current (AC) voltage from a radio wave. The collection circuit generates a direct current (DC) voltage corresponding to the AC voltage, determines whether the DC voltage is lower than a preset value, and changes an internal impedance of the collection circuit if it is determined that the DC voltage is lower than the preset voltage.

摘要翻译： 提供一种无线收集装置。 该装置包括天线和收集电路。 天线从无线电波产生交流（AC）电压。 收集电路产生对应于交流电压的直流（DC）电压，确定直流电压是否低于预设值，并且如果确定直流电压低于预定值，则改变收集电路的内部阻抗 预置电压。

公开(公告)号：US08054126B2

公开(公告)日：2011-11-08

申请号：US12705208

申请日：2010-02-12

申请人： Youngoo Yang ,  Min-Su Kim

发明人： Youngoo Yang ,  Min-Su Kim

IPC分类号： H03F3/68

CPC分类号： H03F1/0266 ,  H03F1/0277 ,  H03F1/0288 ,  H03F1/3205 ,  H03F1/56 ,  H03F3/189 ,  H03F3/211 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/222 ,  H03F2200/27 ,  H03F2200/387 ,  H03F2200/451 ,  H03F2203/21142

摘要： A dynamic bias supply device for multiple parallel power amplifiers, in which a plurality of parallel power amplifiers including a Doherty amplifier are connected in parallel, is provided. The dynamic bias supply device includes a plurality of switches respectively corresponding to each of the parallel power amplifiers. The dynamic bias supply device is used in a distributed manner as multiple distributed dynamic bias switching circuits for the multiple parallel power amplifiers. Accordingly, performance deterioration is not caused by an additional connection structure, and it is possible to achieve high efficiency and high linearity of the power amplifiers.

摘要翻译： 提供了一种用于多并联功率放大器的动态偏置电源装置，其中包括Doherty放大器的多个并联功率放大器并联连接。 动态偏置电源装置包括分别对应于每个并联功率放大器的多个开关。 动态偏置电源装置以分布式方式用作多并联功率放大器的多个分布式动态偏置开关电路。 因此，性能劣化不是由附加的连接结构引起的，并且可以实现功率放大器的高效率和高线性度。

公开(公告)号：US20100304701A1

公开(公告)日：2010-12-02

申请号：US12642252

申请日：2009-12-18

申请人： Sung-chan Jung ,  Su-kyum KIM ,  Youngoo Yang

发明人： Sung-chan Jung ,  Su-kyum KIM ,  Youngoo Yang

IPC分类号： H04B1/18

CPC分类号： H04B1/525

摘要： An apparatus and method for removing a transmission leakage signal are provided. The apparatus includes: a directional coupler connecting an antenna to a transmission path and a reception path; and a reflection coefficient adjustment unit outputting a reflection signal to the reception path, the reflection signal having the same amplitude as and opposite phase to a first transmission leakage signal generated from the transmission path and input to the reception path and a second transmission leakage signal reflected by the antenna and input to the reception path.

摘要翻译： 提供一种用于去除传输泄漏信号的装置和方法。 该装置包括：将天线连接到传输路径和接收路径的定向耦合器; 以及反射系数调整单元，其向所述接收路径输出反射信号，所述反射信号具有与从所述传输路径生成并输入到所述接收路径的第一传输泄漏信号相同的振幅和相反相位的反射信号，以及反射的第二传输泄漏信号 通过天线和输入到接收路径。

公开(公告)号：US06992524B2

公开(公告)日：2006-01-31

申请号：US10658234

申请日：2003-09-08

申请人： Youngoo Yang ,  Kevin Choi ,  Bong-Seok Park

发明人： Youngoo Yang ,  Kevin Choi ,  Bong-Seok Park

IPC分类号： G05F3/02 ,  H03G3/10

CPC分类号： H03F1/30 ,  G05F3/222 ,  H03F2200/18

摘要： A bias control circuit for controlling a bias circuit coupled to an amplifier transistor. The bias control circuit receives a control voltage, and actively adjusts an equivalent resistance of the bias control circuit responsive to the control voltage, wherein the equivalent resistance is established between a first node and a reference voltage. In one embodiment, when the control voltage is increased, the equivalent resistance is gradually decreased and a current drawn by the bias control circuit is gradually increased, resulting in a quiescent current of the amplifier transistor being gradually increased.

摘要翻译： 一种用于控制耦合到放大器晶体管的偏置电路的偏置控制电路。 偏置控制电路接收控制电压，并且响应于控制电压主动地调整偏置控制电路的等效电阻，其中在第一节点和参考电压之间建立等效电阻。 在一个实施例中，当控制电压增加时，等效电阻逐渐减小，并且由偏置控制电路汲取的电流逐渐增加，导致放大器晶体管的静态电流逐渐增加。

公开(公告)号：US06791410B2

公开(公告)日：2004-09-14

申请号：US10440123

申请日：2003-05-19

申请人： Bumman Kim ,  Youngoo Yang ,  Young Yun Woo

发明人： Bumman Kim ,  Youngoo Yang ,  Young Yun Woo

IPC分类号： H03P126

CPC分类号： H03F1/3229

摘要： A feedforward amplifier, and a method of improving the performance thereof, are provided. More particularly, a feedforward amplifier using imperfect cancellation of a main signal and a method of improving the performance thereof, in which, by including a predetermined amount of a main signal in an error signal that is input to an error signal cancellation loop of the feedforward amplifier, more error components of a final output signal are removed, such that the linearity and efficiency of the final output signal improve.

摘要翻译： 提供了一种前馈放大器及其性能的提高方法。 更具体地说，一种使用主信号的不完全消除的前馈放大器和改进其性能的方法，其中通过将预定量的主信号包含在输入到前馈的误差信号消除环路的误差信号中 放大器，去除最终输出信号的更多误差​​分量，使得最终输出信号的线性和效率提高。

公开(公告)号：US08955757B2

公开(公告)日：2015-02-17

申请号：US13335208

申请日：2011-12-22

申请人： Sung-chan Jung ,  Min-geun Song ,  Hyung-chul Kim ,  Youngoo Yang

发明人： Sung-chan Jung ,  Min-geun Song ,  Hyung-chul Kim ,  Youngoo Yang

IPC分类号： G08B5/22 ,  H02J17/00

CPC分类号： H02J50/20 ,  H02J17/00

摘要： An apparatus for collecting wireless is provided. The apparatus includes an antenna and a collection circuit. The antenna generates an alternating current (AC) voltage from a radio wave. The collection circuit generates a direct current (DC) voltage corresponding to the AC voltage, determines whether the DC voltage is lower than a preset value, and changes an internal impedance of the collection circuit if it is determined that the DC voltage is lower than the preset voltage.

摘要翻译： 提供一种无线收集装置。 该装置包括天线和收集电路。 天线从无线电波产生交流（AC）电压。 收集电路产生对应于交流电压的直流（DC）电压，确定直流电压是否低于预设值，并且如果确定直流电压低于预定值，则改变收集电路的内部阻抗 预置电压。

公开(公告)号：US20110300817A1

公开(公告)日：2011-12-08

申请号：US13151815

申请日：2011-06-02

申请人： Sung-chan JUNG ,  Youngoo YANG ,  Min-su KIM

发明人： Sung-chan JUNG ,  Youngoo YANG ,  Min-su KIM

IPC分类号： H04B1/04

CPC分类号： H04B1/525

摘要： An apparatus and method for removing a transmission leakage signal from a radio frequency identification (RFID) reader are provided. The apparatus includes a removing unit having a device of a large impedance and a phase shifter capable of a wide range phase change with respect to a leakage signal, thereby optimally removing the transmission leakage signal irrespective of a change in the frequency characteristics and a change in the length of a cable.

摘要翻译： 提供了一种用于从射频识别（RFID）读取器去除传输泄漏信号的装置和方法。 该装置包括具有大阻抗的装置的去除单元和能够相对于泄漏信号进行宽范围相位变化的移相器，从而最佳地消除了传输泄漏信号，而不管频率特性的变化和变化 电缆的长度。