公开(公告)号：US20020187761A1

公开(公告)日：2002-12-12

申请号：US10081645

申请日：2002-02-21

申请人： Solid Technologies, Inc.

发明人： Sungbin Im ,  Chonghoon Kim ,  Yoan Shin

IPC分类号： G01R019/00 ,  G01R021/00 ,  G01R023/00 ,  H04B001/04 ,  H01Q011/12

CPC分类号： H04B1/0475 ,  H03F1/3247

摘要： A device for compensating for the nonlinearity of a power amplifier which has a simple configuration and can precisely linearize the transfer characteristics of the power amplifier by predistorting an input signal of the power amplifier. The nonlinearity compensation device of the present invention converts an RF input signal into an IF band rather than a baseband and predistorts the RF input signal in digital domain, and thus any modulation or demodulation process is obviated and the simultaneous processing of signals in multiple channels is facilitated. A first downconverter receives the RF input signal and converts the frequency band of the signal into the IF band to output an IF input signal. A predistortion unit receives and predistorts the IF input signal to compensate for the nonlinearity, and outputs an IF predistorted signal. An upconverter converts the frequency band of the IF predistorted signal into the RF band to provide such a signal to the amplifier.

摘要翻译： 用于补偿具有简单配置的功率放大器的非线性的装置，并且可以通过预失真功率放大器的输入信号来精确地线性化功率放大器的传输特性。 本发明的非线性补偿装置将RF输入信号转换为IF频带而不是基带，并且在数字域中对RF输入信号进行预失真，从而消除任何调制或解调处理，并且多个信道中的信号的同时处理是 方便了 第一下变频器接收RF输入信号并将信号的频带转换成IF频带以输出IF输入信号。 预失真单元接收并预失真IF输入信号以补偿非线性，并输出IF预失真信号。 上变频器将IF预失真信号的频带转换成RF频带，以向放大器提供这样的信号。