In-Band Digital Predistortion for Concurrent Dual-Broadband Phased Array Transmitters

被引：6
|
作者：
Lu, Qianyun [1 ]
Yu, Chao [1 ]
机构：
[1] Southeast Univ, Sch Informat Sci & Engn, State Key Lab Millimeter Waves, Nanjing 210096, Jiangsu, Peoples R China
来源：
IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2019年 / 29卷 / 04期
基金：
中国国家自然科学基金;
关键词：
Broadband; concurrent dual band; digital predistortion; phased array; power amplifiers (PAs);
D O I：
10.1109/LMWC.2019.2902725
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：
This letter proposes a novel in-band digital predistortion technique to linearize the concurrent dual-broadband phased array transmitters, which can remove the in-band distortion with reduced processing bandwidth compared to conventional methods. Based on 1 x 4 phased array antennas fed by a Ka-band power amplifier, a concurrent dual-band signal with modulated bandwidth of 200 MHz at 27 and 28.2 GHz can be effectively linearized with the processing bandwidth of only 240 MHz. The proposed method presents great effectiveness and a bright prospect for ultrabroadband multiband applications in future communication systems.
引用
收藏
页码：294 / 296
页数：3
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