公开(公告)号：US07242247B2

公开(公告)日：2007-07-10

申请号：US11063998

申请日：2005-02-24

申请人： Nobuo Hirose ,  Nobuo Murata ,  Yasutoshi Tada ,  Nobuo Tsukamoto

发明人： Nobuo Hirose ,  Nobuo Murata ,  Yasutoshi Tada ,  Nobuo Tsukamoto

IPC分类号： H03F1/26

CPC分类号： H03F1/3247 ,  H03F1/3258

摘要： A distortion compensating circuit for a power amplifier attains raised compensating accuracy with shorter convergence time by accurately and quickly generating a distortion compensation signal for pre-distortion. An error signal representing the difference between the input and output signals of the power amplifier is generated. From the error signal and the input signal, the coefficients of the third-order intermodulation distortion, fifth-order intermodulation distortion and seventh-order intermodulation distortion are calculated. According to these coefficients, a distortion compensating signal which is characteristically opposite in phase and gain to the intermodulation distortions is generated.

摘要翻译： 用于功率放大器的失真补偿电路通过精确且快速地产生用于预失真的失真补偿信号，从而提高了具有较短会聚时间的补偿精度。 产生表示功率放大器的输入和输出信号之间的差异的误差信号。 根据误差信号和输入信号，计算三阶互调失真，五阶互调失真和七阶互调失真的系数。 根据这些系数，生成相位特性相反并且互调失真增益的失真补偿信号。

公开(公告)号：US20050184803A1

公开(公告)日：2005-08-25

申请号：US11063998

申请日：2005-02-24

申请人： Nobuo Hirose ,  Nobuo Murata ,  Yasutoshi Tada ,  Nobuo Tsukamoto

发明人： Nobuo Hirose ,  Nobuo Murata ,  Yasutoshi Tada ,  Nobuo Tsukamoto

IPC分类号： H03F1/26 ,  H03F1/32 ,  H03F3/24 ,  H04B1/04 ,  H04J11/00

CPC分类号： H03F1/3247 ,  H03F1/3258

摘要： A distortion compensating circuit for a power amplifier attains raised compensating accuracy with shorter convergence time by accurately and quickly generating a distortion compensation signal for predistortion. An error signal representing the difference between the input and output signals of the power amplifier is generated. From the error signal and the input signal, the coefficients of the third-order intermodulation distortion, fifth-order intermodulation distortion and seventh-order intermodulation distortion are calculated. According to these coefficients, a distortion compensating signal which is characteristically opposite in phase and gain to the intermodulation distortions is generated.

摘要翻译： 用于功率放大器的失真补偿电路通过精确地并且快速地产生用于预失真的失真补偿信号，从而提高了具有较短会聚时间的补偿精度。 产生表示功率放大器的输入和输出信号之间的差异的误差信号。 根据误差信号和输入信号，计算三阶互调失真，五阶互调失真和七阶互调失真的系数。 根据这些系数，生成相位特性相反并且互调失真增益的失真补偿信号。