摘要
针对卫星通信中天线方向图的圆极化宽波束需求,给出了一种四臂螺旋天线的设计方法。通过无限巴伦实现平衡馈电,并利用四臂螺旋自身的结构特点构造了90°自相移结构,获得了较好的圆极化特性。采用Ansoft HFSS软件进行仿真及优化设计,加工了两种尺寸的天线实物,测试结果表明,实测和仿真结果较一致,两副天线的3dB波束宽度分别达到124°和180°。
The antennas used for the system of satellite communication usually are requested to provide wide beam and circular polarization.Basing on that need,we have give a designer of quadrifilar helix Antenna. The antenna is feeded by infinite balun and used 90° self-phased structure.We used the software of Ansoft HFSS and made two antennas. The date of test is consistent with the date of computed.The 3dB of respective beam are 124°and 180°.
出处
《通信对抗》
2009年第3期62-64,共3页
Communication Countermeasures
关键词
宽波束
四臂螺旋天线
90°自相移
无限巴伦
wide- beam
quadrifilar helix Antenna
90°self-phased structure
infinite balun
