分析了接收机Ｉ、Ｑ 通道幅相不平衡产生的镜像信号对后续信号处理的影响及可取的误差校正技术。介绍了抑制镜像信号的ＤＰＤ技术。

This paper analyzes the influence of image signal that is caused by imbalance of amplitude and phase of I,Q channel in receiver on following signal processing and /possible error calibration technology.It also introduces DPD (Digital Product Detector) technology that is used to restrain image signal.

TN85 TN911.7