| 摘要: |
| 在共址平台场景下，大功率发射装备工作时辐射的信号会对其附近的高灵敏度接收机造成严重干扰。针对这一问题，采用一种多抽头射频干扰对消系统，通过控制系统中的时延、幅度和衰减的权值，使得产生的参考信号与干扰信号等幅反向，从而实现干扰信号的对消。为了获得最优的干扰对消性能，提出了一种基于优化算法获取多抽头最优控制权值的方法。与传统获取控制权值的方法相比，所提方法具有抽头支路少、干扰抑制性能高和对数字控制电路要求低等优点。 |
| 关键词: 共址平台 射频抗干扰抑制 多抽头 优化算法 |
| DOI：10.20079/j.issn.1001-893x.230526002 |
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| 基金项目:中国博士后基金(2022M713852) |
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| A Design Method of Co-platforms Radio FrequencyInterference Suppression System |
| TANG Cong,GAO Xin,ZHU Hongquan,ZHANG Jinrong,ZHANG Zhongshan,ZHENG Donghao |
| (1.Beijing Institute of Tracking and Telecommunication Technology,Beijing 100095,China;2.School of Cyberspace Science and Technology,Beijing Institute of Technology,Beijing 100081,China;3.Southwest China Institute of Electronic Technology,Chengdu 610036,China) |
| Abstract: |
| In co-platforms,radio frequency(RF) interference is a key problem to the high sensitivity receiver when the high power transmitter works.In order to suppress the interference,the multi-tap RF self-interference cancellation structure is utilized.By controlling the weight of delay,amplitude and phase,the generated signal’s amplitude is equal to the interference signal and the phase is opposite.To achieve the best performance,a method based on optimization algorithm is proposed to obtain the multi-tap’s best control weight.Compared with the traditional method,the proposed method shows the merits of high interference suppression ratio,few number of taps and low demand on the digital control circuit. |
| Key words: co-platform RF interference suppression multi-tap optimization algorithm |
