公开(公告)号：US20070120606A1

公开(公告)日：2007-05-31

申请号：US11598589

申请日：2006-11-13

申请人： Jong-Sung Lee ,  Keun-Hyo Song ,  Han-Seok Kim ,  Sei-Jei Cho ,  Joong-Ho Jeong ,  Bumman Kim ,  Jeonghyeon Cha

发明人： Jong-Sung Lee ,  Keun-Hyo Song ,  Han-Seok Kim ,  Sei-Jei Cho ,  Joong-Ho Jeong ,  Bumman Kim ,  Jeonghyeon Cha

IPC分类号： H03F3/191

CPC分类号： H03F3/191 ,  H03F1/0261 ,  H03F1/301 ,  H03F1/32 ,  H03F1/42 ,  H03F2200/15 ,  H03F2200/18 ,  H03F2200/36 ,  H03F2200/42 ,  H03F2200/451 ,  H03F2200/75

摘要： A base station power amplifier for minimizing memory effect is provided. The power amplifier includes a bias circuit which supplies a direct current (DC) power to a transistor; the transistor which amplifies the DC power provided from the bias circuit; a matching circuit which transfers maximum power to a load by reducing loss of the power amplified by the transistor; and a large capacitor which lies between the matching circuit and the transistor, reduces a low-frequency second harmonic voltage by electrically connecting directly to the matching circuit, and has a preset capacitance value.

摘要翻译： 提供了一种用于最小化记忆效应的基站功率放大器。 功率放大器包括向晶体管提供直流（DC）功率的偏置电路; 放大从偏置电路提供的直流电力的晶体管; 匹配电路，通过减少由晶体管放大的功率的损耗来向负载传输最大功率; 并且位于匹配电路和晶体管之间的大电容器通过与匹配电路直接电连接而降低低频二次谐波电压，并具有预设的电容值。

公开(公告)号：US08107904B2

公开(公告)日：2012-01-31

申请号：US12391774

申请日：2009-02-24

申请人： Cheol-Woo Ahn ,  Keun-Hyo Song ,  Cheol-Soo Seo ,  Young-Yoon Woo ,  Bum-Man Kim ,  Il-Du Kim

发明人： Cheol-Woo Ahn ,  Keun-Hyo Song ,  Cheol-Soo Seo ,  Young-Yoon Woo ,  Bum-Man Kim ,  Il-Du Kim

IPC分类号： H01Q11/12

CPC分类号： H03G3/3042 ,  H03C5/00 ,  H03F1/0227 ,  H03F3/245 ,  H03F2200/15 ,  H03F2200/511 ,  H03G3/004

摘要： An apparatus and a method for an Envelope Elimination and Restoration (EER) power transmitter are provided. The apparatus includes a signal separator for splitting a transmit signal to an amplitude component and a phase component, an orthogonal modulator for modulating the phase component into a Radio Frequency (RF) signal, a bias modulator for linearly amplifying the amplitude component, for determining a bias voltage according to a magnitude of the amplitude component, and for providing a current generated using the determined bias voltage to a high-efficiency power amplifier and the high-efficiency power amplifier for amplifying the RF signal using the linearly amplified amplitude component as a drain bias voltage and using the generated current as a drain bias current.

摘要翻译： 提供了消除和消除信封（EER）功率发射器的装置和方法。 该装置包括用于将发射信号分解为振幅分量和相位分量的信号分离器，用于将相位分量调制为射频（RF）信号的正交调制器，用于线性放大振幅分量的偏置调制器，用于确定 根据幅度分量的大小，将偏置电压提供给高效率功率放大器和用于使用线性放大振幅分量放大RF信号的高效率功率放大器作为漏极 使用发电电流作为漏极偏置电流。

公开(公告)号：US08249530B2

公开(公告)日：2012-08-21

申请号：US12240024

申请日：2008-09-29

申请人： Kae-Oh Sun ,  Keun-Hyo Song

发明人： Kae-Oh Sun ,  Keun-Hyo Song

IPC分类号： H01Q11/12

CPC分类号： H04B1/0483 ,  H03F1/0205 ,  H03F1/32 ,  H03F1/3223 ,  H03F3/217 ,  H03F3/24 ,  H03F2200/331 ,  H03F2200/451 ,  H03F2200/507 ,  H04B1/0475 ,  H04B2001/0441

摘要： An apparatus and method for power amplification in a wireless communication system are provided. The apparatus includes an envelope generator for generating an envelope signal from a Radio Frequency (RF) signal, a switching controller for generating a first switching control signal by delta-sigma modulating the envelope signal, and for generating a second switching control signal by amplifying an error signal obtained from a difference between an envelope signal restored by filtering the modulated envelope signal and an original envelope signal and an amplifier for outputting a first output signal by amplifying a phase signal according to the first switching control signal, for outputting a second output signal by amplifying the phase signal according to the second switching control signal, and for combining the first output signal and the second output signal. Thus, high efficiency and high linearity can be accomplished in the power amplification.

摘要翻译： 提供了一种用于无线通信系统中的功率放大的装置和方法。 该装置包括用于从射频（RF）信号产生包络信号的包络发生器，用于通过Δ-Σ调制包络信号产生第一切换控制信号的切换控制器，以及通过放大第二切换控制信号来产生第二切换控制信号 从通过滤波调制的包络信号而恢复的包络信号与原始包络信号之间的差获得的误差信号和通过根据第一切换控制信号放大相位信号来输出第一输出信号的放大器，用于输出第二输出信号 通过根据第二开关控制信号放大相位信号，并且用于组合第一输出信号和第二输出信号。 因此，在功率放大中可以实现高效率和高线性度。

公开(公告)号：US20090215413A1

公开(公告)日：2009-08-27

申请号：US12391774

申请日：2009-02-24

申请人： Cheol-Woo Ahn ,  Keun-Hyo Song ,  Cheol-Soo Seo ,  Young-Yoon Woo ,  Bum-Man Kim ,  Il-Du Kim

发明人： Cheol-Woo Ahn ,  Keun-Hyo Song ,  Cheol-Soo Seo ,  Young-Yoon Woo ,  Bum-Man Kim ,  Il-Du Kim

IPC分类号： H04B1/04

CPC分类号： H03G3/3042 ,  H03C5/00 ,  H03F1/0227 ,  H03F3/245 ,  H03F2200/15 ,  H03F2200/511 ,  H03G3/004

摘要： An apparatus and a method for an Envelope Elimination and Restoration (EER) power transmitter are provided. The apparatus includes a signal separator for splitting a transmit signal to an amplitude component and a phase component, an orthogonal modulator for modulating the phase component into a Radio Frequency (RF) signal, a bias modulator for linearly amplifying the amplitude component, for determining a bias voltage according to a magnitude of the amplitude component, and for providing a current generated using the determined bias voltage to a high-efficiency power amplifier and the high-efficiency power amplifier for amplifying the RF signal using the linearly amplified amplitude component as a drain bias voltage and using the generated current as a drain bias current.

摘要翻译： 提供了消除和消除信封（EER）功率发射器的装置和方法。 该装置包括用于将发射信号分解为振幅分量和相位分量的信号分离器，用于将相位分量调制为射频（RF）信号的正交调制器，用于线性放大振幅分量的偏置调制器，用于确定 根据幅度分量的大小，将偏置电压提供给高效率功率放大器和用于使用线性放大振幅分量放大RF信号的高效率功率放大器作为漏极 使用发电电流作为漏极偏置电流。