公开(公告)号：US20150188499A1

公开(公告)日：2015-07-02

申请号：US14165777

申请日：2014-01-28

Applicant: MediaTek Inc.

Inventor： Tsung-Han TSAI ,  Shin-Fu CHEN

IPC: H03F1/32 ,  H04B1/04 ,  H03F3/24

CPC classification number: H03F1/3247 ,  H03F1/3241 ,  H03F3/195 ,  H03F3/24 ,  H03F2200/465 ,  H03F2201/3227 ,  H04B1/0475 ,  H04B2001/0425

Abstract: A communication system is provided. The communication system includes an antenna, a power amplifier, a detector and a signal-processing module. The power amplifier provides an output signal to the antenna according to an input signal. The detector provides power information and voltage information according to the output signal. The signal-processing module obtains a loading variation according to the power information and the voltage information, and provides the input signal according to the loading variation. When the loading variation exceeds a threshold value, the signal-processing module performs a digital pre-distortion calibration for the input signal.

Abstract translation: 提供通信系统。 通信系统包括天线，功率放大器，检测器和信号处理模块。 功率放大器根据输入信号向天线提供输出信号。 检测器根据输出信号提供电源信息和电压信息。 信号处理模块根据功率信息和电压信息获得负载变化，并根据负载变化提供输入信号。 当负载变化超过阈值时，信号处理模块对输入信号进行数字预失真校准。