| 摘要: |
| 针对卫星通信、卫星导航设备中四臂螺旋天线低仰角增益低、馈电网络尺寸不能满足安装要求的问题，设计了一种新型四臂螺旋天线，采用折叠式威尔金森(Wilkinson)移相馈电网络馈电，采用类八臂渐变式螺旋臂的方法提升天线低仰角增益。天线仿真和测试结果吻合良好，结果显示，在±60°~±90°低仰角范围内天线增益提高了1~2 dB，天线轴比保持在2以内，馈电网络高度降低了1.5 cm。该四臂螺旋天线具有低仰角高增益、圆极化特性良好、尺寸小等特点。 |
| 关键词: 四臂螺旋天线 折叠式威尔金森 移相馈电网络 类八臂 小型化设计 |
| DOI： |
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| 基金项目: |
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| A novel high gain miniaturized quadrifilar helix antenna |
| WANG Xiaoming,LI Yajun,RUI Xi,WU Yongqing |
| (Southwest China Institute of Electronic Technology,Chengdu 610036,China) |
| Abstract: |
| For the problems that low gain of low elevation of quadrifilar helix antenna and the size of feed network cannot meet the installation requirements in satellite communication and satellite navigation equipment,a novel quadrifilar helix antenna is designed.A folding Wilkinson phase shift feed network is used to feed the system.Low gain of low elevation of the antenna is improved by the method of eight-arm tapered helix arm.The antenna simulation results are in good agreement with the measured.The results show that the antenna gain is increased by 1~2 dB in the ±60°~±90° low elevation range,the antenna axis ratio remains within 2,the feed network height is reduced by 1.5 cm.The quadrifilar helix antenna is featured by high gain in low elevation range,good circular polarization and small size. |
| Key words: quadrifilar helix antenna folding Wilkinson phase shift feed network eight-arm allied miniaturized design |
《电讯技术》编辑部 