Digital Predistortion of Phased Array Transmitters with Multi-Channel Time Delay

被引：0
|
作者：
Luo, Qing [1 ]
Yu, Chao [1 ]
Zhu, Xiao-Wei [1 ]
机构：
[1] Southeast Univ, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China
来源：
2018 IEEE TOPICAL CONFERENCE ON RF/MICROWAVE POWER AMPLIFIERS FOR RADIO AND WIRELESS APPLICATIONS (PAWR) | 2018年
基金：
中国国家自然科学基金;
关键词：
Behavioral model; digital predistortion (DPD); nonlinear distortion; phased array; power amplifiers;
D O I：
暂无
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
In this paper, a novel digital predistortion (DPD) technique is proposed to linearize a phased array transmitter with multi-channel time delay in the over-the-air (OTA) feedback loop-based structure. Compared to the conventional DPD concept, the proposed method treats the whole phased array transmitter as an integration, and thus transforms the multi-channel system to a one-to-one mapping system. The relationship between the input and output with multi-channel time delay and intrinsic nonlinear distortion can be effectively modeled by the proposed model, and then applied into the DPD technique. The excellent experiment results indicated that the proposed DPD technique can be adaptive to the OTA-feedback architecture, which is suitable for the applications in 5G systems.
引用
收藏
页码：54 / 57
页数：4
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