跳频数据链干扰对消系统射频前端设计优化  

RF Front-end Design Optimization of FH Data Link Interference Cancellation System

作　　者：刘宏波 肖思帅 梁嘉棋 何方敏[1] 李亚星 孟进[1] LIU Hongbo;XIAO Sishuai;LIANG Jiaqi;HE Fangmin;LI Yaxing;MENG Jin(Key Laboratory of Ship Integrated Power Technology and National Defense Science and Technolog(Naval University of Engineering),Wuhan 430033,Hubei Province,China)

机构地区：[1]舰船综合电力技术国防科技重点实验室(海军工程大学),湖北省武汉市430033

出　　处：《中国电机工程学报》2024年第4期1534-1541,I0023,共9页Proceedings of the CSEE

基　　金：国家杰出青年科学基金项目(52025072);湖北省重点研发计划项目(2021BIDS007)。

摘　　要：干扰对消是主动方式的干扰管理方法,干扰对消的核心思想是利用干扰源来消除干扰,针对高速跳频系统抗干扰系统采用分离式方法设计干扰对消系统,需要定制化的射频前端设计。针对高速跳频系统抗干扰系统的抗干扰抑制需求,从信号取样、射频接入、对消方式和控制接口4个方面分析跳频数据链干扰对消系统的工作流程,设计主控天线前端电路的直通单元和射频前端,结合模数转换(analog-to-digital conversion,AD)底噪和干扰信号峰均比的影响,计算噪声功率密度和噪声功率,分析射频前端参数影响跳频数据链灵敏度和干扰对消能力上限的约束条件,最后给出射频前端系统增益和信号带宽参数影响跳频数据链干扰对消系统的优化分析。Interference cancellation is an active way of interference management method,and its core idea is to use interference sources to eliminate interference.For the high-speed frequency hopping system,the anti-jamming system using a separate method to design interference cancellation system requires customized RF front-end design.Aiming at the anti-interference suppression requirements of the anti-interference system of the high-speed frequency hopping system,the workflow of the frequency hopping data link interference cancellation system is analyzed from four aspects:signal sampling,RF access,cancellation mode and control interface.The pass-through unit and RF front end of the main control antenna front-end circuit are designed,and the noise power density and noise power are calculated by combining the influence of analog-to-digital conversion(AD)noise floor and the peak average ratio of interference signal.The constraints of RF front-end parameters affecting the sensitivity of frequency hopping data link and the upper limit of interference cancellation capacity are analyzed.Finally,the optimization analysis of the gain and signal bandwidth parameters of the RF front-end system affecting the frequency hopping data link interference cancellation system is given.

关 键 词：数据链 干扰对消 射频前端 噪声功率 

分 类 号：TN973[电子电信—信号与信息处理]