【作者】 张坤哲； 姜文； 洪涛； 龚书喜；

【Author】 ZHANG Kunzhe;JIANG Wen;HONG Tao;GONG Shuxi;School of Electronic Engineering, Xidian University;

【机构】 西安电子科技大学电子工程学院；

【摘要】 本文主要研究掠入射状态下微带天线RCS减缩的新方法,通过在微带贴片表面加载集总元件实现天线RCS减缩。由于RLC电路的滤波和谐振特性,LC支路可视为选择开关电路,而电阻R支路可视为消耗电路,通过分析微带天线的辐射电流和散射电流分布,选择合适的RLC单元位置与数值,从而切断并消耗散射电流,以此实现微带天线RCS减缩,与此同时,对天线的辐射性能并没有造成明显的影响。更多还原

【Abstract】 In this paper, the lumped LRC circuit is used to reduce the radar cross-section of a microstrip patch antenna. The method is used for case of grazing incidence. In the investigation, lumped LC circuits work as switches and the lumped resistances work as absorbers. According to the magnitude distribution of the induced electric current and the radiation current, the position of the LC circuits are carefully selected. As a result, RCS reduction for the antenna in the case of glancing incidence is realized by the resistance characteristic(energy dissipation).It is worth mentioning that, by choosing the suitable value of the lumped LC, the antenna gain is well maintained when the antenna is at work.更多还原