一种X波段多极化椭圆波纹喇叭设计

Design of an X-band multi-polarized elliptical corrugated horn

针对当反射面天线大宽高比并要求多极化转换时,宜选择椭圆波纹喇叭作为馈源的需求,在详细研究径向槽波纹喇叭天线设计方法的基础上,采用波纹槽深渐变的方法,利用HFSS软件设计一种X频段椭圆率大于2的带正交模的椭圆波纹喇叭。实测结果表明,该喇叭具有驻波低、交叉极化抑制度高和良好的双极化波瓣等化性等优点,可满足多极化反射面天线对馈源的需求,具有较高的工程应用价值。

When the reflector antenna requires a large aspect ratio and multi-polarization conversion,elliptical corrugated horn should be selected as the feed source.Based on a detailed study on the design method of the radial groove corrugated horn antenna,the method of ripple groove depth gradient is adopted,and an X-band elliptical corrugated horn is designed with the orthogonal mode and the ellipticity greater than 2 via the HFSS software.The actual measurement results indicate that the horn features low standing wave,high cross polarization suppression,and good dual-polarization lobe equalization,which can meet the feed requirements of multi-polarized reflector antennas and has good engineering application value.