天地一体化信息网络2025，Vol.6Issue(3)：92-99,8.DOI:10.11959/j.issn.1000-0801.2025031
数字预失真技术在低轨卫星通信数字相控阵天线中的应用
Application of Digital Predistortion Technique to Digital Phased Array Antenna for the Low Earth Orbit Satellite Communication System
韩晓梦 1王继康 1杨再新 1李健行 1王安阳1
作者信息
- 1. 上海卫星互联网研究院有限公司,上海 202161||上海市卫星互联网重点实验室,上海 202161||卫星互联网全国重点实验室,上海 202161
- 折叠
摘要
Abstract
Low-orbit satellite communication systems are developing towards wide coverage and high performance.Traditional phased array antennas improve system linearity indicators through power backoff,a method that affects the equivalent isotropic radiated power(EIRP)indicator of phased array antenna systems.Therefore,introducing digital pre-distortion(DPD)technology into low-orbit satel-lites has become a research trend to address the contradiction between the EIRP of spaceborne phased array antennas and transmission linearity.In this paper,field measurements were carried out based on the first-order B-spline digital pre-distortion nonlinear model with optimal performance and complexity.The test results showed that digital pre-distortion technology can alleviate the contradiction be-tween the EIRP and linearity requirements of digital phased array antenna systems.关键词
低轨卫星/功率放大器/数字预失真/行为建模Key words
low earth orbit satellite/power amplifier/digital predistortion/behavioral modeling分类
信息技术与安全科学引用本文复制引用
韩晓梦,王继康,杨再新,李健行,王安阳..数字预失真技术在低轨卫星通信数字相控阵天线中的应用[J].天地一体化信息网络,2025,6(3):92-99,8.
