无线芯片中数字预失真技术的应用与性能影响因素分析  

Application of DPD in the Wireless Chip and Analysis of Its Performance Affected Factors

作　　者：徐建忠 XU Jianzhong(Spreadtrum Communications,Shanghai Inc,Shanghai 201203,China)

机构地区：[1]展讯通信上海有限公司,上海201203

出　　处：《集成电路应用》2018年第8期13-16,共4页Application of IC

基　　金：国家科技重大专项课题03专项(2015ZX03001022)LTE-Hi多模终端基带及射频芯片的研发

摘　　要：数字预失真(DPD,Digital Pre-Distortion)技术作为补偿电路非线性特性的一种手段,通常应用于各种射频发射电路中,来提升功率放大器近饱和区的线性度,最终改善大功率的EVM/ACPR等指标。在移动通信领域,无线芯片的发射通路DPD功能开发调试过程中,会碰到影响DPD性能的各种因素,对此进行了一些分析归纳。DPD （Digital Pre-Distortion） technology, as a mean of enhancing the circuit linearity, is usually applied to the RF transmitter circuits in order to get good ACPR/EVM system performance where the PA worked in near-statured state. In the mobile communication field, we always encountered a variety of factors affecting the performance of DPD when we developed the transmit circuit＇s DPD function in the wireless chip. We analyze it and summarize some factors.

关 键 词：集成电路设计 DPD 无线芯片 射频功率放大器 增益曲线 

分 类 号：TN402[电子电信—微电子学与固体电子学] TN722.75