电波科学学报2018，Vol.33Issue(1)：27-32,6.DOI:10.13443/j.cjors.2017090701
基于近场场图的带罩天线近副瓣畸变分析
Radome enclosed antenna proximal lobe distortion based on near-field pattern
刘谊 1范雪平1
作者信息
- 1. 中国空空导弹研究院, 洛阳 471009
- 折叠
摘要
Abstract
Near-field and far-field pattern of radome enclosed antenna are simulated by FEKO, and the reason of far-field pattern proximal lobe distortion is analyzed based on near-field pattern. Equivalent nearfield technique is applied in simulation process, which is precise and effective. Near-field pattern indicates three effect result in proximal lobe lifting: firstly, radome top area diffracts electromagnetic wave obviously, and wavefront bifurcates; secondly, metalic nose tip is excitated to engender surface current which causes secondary radiation; thirdly, partial electromagnetic wave reflects and then transmits through radome top area, thus reflection-transmission wave energy superposes in proximal lobe direction. Radome design is improved based on three effects mentioned above, and proximal lobe level of radome enclosed antenna is degraded obviously. Near-field pattern method reveals the relationship between radome local details and far field pattern, and is very valuable in radome electronic performance optimization. 关键词
FEKO/近场场图/带罩天线/近副瓣/畸变Key words
FEKO/near-field pattern/radome enclosed antenna/proximal lobe/distortion分类
数理科学引用本文复制引用
刘谊,范雪平..基于近场场图的带罩天线近副瓣畸变分析[J].电波科学学报,2018,33(1):27-32,6.
