摘要
为了提高X波段雷达的带外抑制能力,在传统方形环孔的基础上,设计了一种新型带通FSS单元。运用谱域法对这种新型单元的传输系数进行了数值计算。计算结果表明:该新型频率选择表面(FSS)的工作带宽为8～12 GHz,该新型单元具有极好的角度稳定性。入射角度φ从0°到90°变化时,工作带宽漂移量不超过100 MHz;入射角度θ从0°到45°变化时,工作带宽漂移量不超过400 MHz。应用于X波段(8～12 GHz)雷达天线上,可提高其带外抗干扰的能力。
To improve X band radar anti-interference efficiency, a new band-pass frequency selective surface （FSS） is designed based on traditional square loop aperture. The transmission coefficient of the FSS is calculated with the spectral domain Galerkin method. Calculation results show that the operation bandwidth of the FSS is 8 - 12 GHz, the FSS prototype performs relatively well as an angle insensitive filter, for incident angles ranging from 0° to 90° in the azimuth plane and the incident angles ranging from 0°-45°in the elevation plane and the operation bandwidth excursions are less than 100 MHz and 400 MHz respectively. The new FSS can be applied to X-band radar antenna to improve the anti-interference efficiency.
出处
《现代防御技术》
北大核心
2011年第1期138-140,156,共4页
Modern Defence Technology
