公开(公告)号：US06791409B2

公开(公告)日：2004-09-14

申请号：US10198251

申请日：2002-07-18

申请人： Kaoru Ishida ,  Naoki Takachi ,  Rie Takeuchi

发明人： Kaoru Ishida ,  Naoki Takachi ,  Rie Takeuchi

IPC分类号： H03F126

CPC分类号： H03F1/3229 ,  H03F1/3235 ,  H03F2201/3212

摘要： (Object) It was difficult for a feedforward amplifier to perform stable and high-speed distortion compensation control. (Constitution) It is a feedforward amplifier having CPL1 of dividing an input carrier signal into two output signals, VAP1 of adjusting one of the two divided output signals, AMP1 of amplifying the adjusted one of the output signals to generate an amplification signal, CPL2 of extracting a distortion signal by utilizing the other output signal of the two divided output signals and the generated amplification signal, CPL3 of generating an output carrier signal by utilizing the generated amplification signal and the extracted distortion signal, and CNT1 having a log amplifier of controlling VAP1 based on the other output signal and the generated amplification signal.

摘要翻译： （对象）前馈放大器难以执行稳定的高速失真补偿控制（构成）具有将输入载波信号分成两个输出信号的CPL1的前馈放大器，调整两个分频后的VAP1 输出信号AMP1，放大经调整后的输出信号之一，以产生放大信号，CPL2通过利用两个分频输出信号的其它输出信号和产生的放大信号提取失真信号，CPL3产生输出载波信号 通过利用所生成的放大信号和提取的失真信号，以及具有基于另一输出信号和产生的放大信号控制VAP1的对数放大器的CNT1。

公开(公告)号：US06734727B2

公开(公告)日：2004-05-11

申请号：US10225222

申请日：2002-08-21

申请人： Kaoru Ishida ,  Naoki Takachi ,  Yuji Saito

发明人： Kaoru Ishida ,  Naoki Takachi ,  Yuji Saito

IPC分类号： H03F366

CPC分类号： H03F1/3229 ,  H03F1/3235 ,  H03F2201/3212

摘要： A feedforward amplifier includes a main amplifier for amplifying an input signal, a control circuit for generating a predetermined pilot signal based on the output of a local oscillator and a frequency divider included in the control circuit, and a coupler for combining the input signal or the amplified signal with the pilot signal to generate a combined signal. A first coupler and a second coupler are provided for extracting any distortion component from the combined signal. A vector adjuster, an error amplifier, and a third coupler are provided for removing the extracted distortion component from the combined signal to generate an output signal. An orthogonal detector is provided for using any one of the pilot signal, or the output of the local oscillator, the frequency divider, and the combination of the vector adjuster, error amplifier, and the third coupler to make an adjustment for removing the distortion component.

摘要翻译： 前馈放大器包括用于放大输入信号的主放大器，用于基于本地振荡器的输出和包括在控制电路中的分频器产生预定导频信号的控制电路，以及用于将输入信号或 放大信号与导频信号产生组合信号。 提供第一耦合器和第二耦合器用于从组合信号中提取任何失真分量。 提供矢量调节器，误差放大器和第三耦合器，用于从组合信号中去除提取的失真分量以产生输出信号。 提供正交检测器，用于使用导频信号，本地振荡器的输出，分频器以及矢量调节器，误差放大器和第三耦合器的组合中的任何一个来进行调整以去除失真分量 。

公开(公告)号：US06750706B2

公开(公告)日：2004-06-15

申请号：US10167687

申请日：2002-06-11

申请人： Kaoru Ishida ,  Toshimitsu Matsuyoshi ,  Naoki Takachi ,  Yuji Saito

发明人： Kaoru Ishida ,  Toshimitsu Matsuyoshi ,  Naoki Takachi ,  Yuji Saito

IPC分类号： H03F366

CPC分类号： H03F1/3235 ,  H03F1/3229 ,  H03F2201/3212

摘要： A method of controlling a feedforward distortion compensation amplifier has steps of detecting a distortion component generated in a main amplifier by coupling a signal branched from a signal input to the main amplifier and containing a plurality of carriers of different frequencies to a signal branched from an output signal from the main amplifier so that the coupling causes the carrier components to cancel each other, recoupling the signal resulting from the coupling to the output signal from the main amplifier, and adjusting an amplitude and phase of at least one of the signals to be recoupled so that distortion components cancel each other upon recoupling, wherein a first and second pilot signals obtained from a first and second pilot signal sources are inserted into the input signal to or output signal from the main amplifier, parts of the signal resulting from the recoupling are taken out through branching, and the signals taken out through branching are mixed with the first and second pilot signals, respectively, and thus down-converted to generate down convert signals so that control signals to adjust the amplitude and phase are generated according to the down convert signals.

摘要翻译： 控制前馈失真补偿放大器的方法具有通过将从输入信号分支到主放大器并将不同频率的多个载波分支的信号耦合到从输出信号分支的信号来检测在主放大器中产生的失真分量的步骤 使得耦合使得载波分量彼此抵消，将耦合产生的信号重新耦合到来自主放大器的输出信号，并且调整要重新耦合的至少一个信号的振幅和相位，从而 该失真分量在重新耦合时彼此抵消，其中从第一和第二导频信号源获得的第一和第二导频信号被插入到主放大器的输入信号中或从主放大器输出信号，取出由重新耦合产生的信号的部分 通过分支输出，并且通过分支取出的信号与第一和第二部分混合 并且因此下变频以产生下变频信号，从而根据降频转换信号产生调节幅度和相位的控制信号。