摘要
在现代通信中,特别是卫星通信,有时需要比较高的交叉极化隔离度。对于传统的微带阵列天线来说,由于其馈电网络与阵元均处于同一侧,不仅会产生互耦,影响增益,并且交叉极化隔离度也不能满足广大用户的要求。在此提出一种新型的馈电结构,旨在提高其交叉极化隔离度。从仿真中可以看出,交叉极化隔离度能达到40 dB以上,为实现更大型微带阵列天线网络做出一定的理论实践和工程指导。
A high cross-polarization isolation is sometimes needed in modern communications, especially in satellite communications. A new feeder structure is proposed to enhance the cross-polarization isolation because the array elements and the feed network are at the same side in the traditional microstrip array antenna, and the structure can cause low cross-Polarization isolation and co-coupling which affects the gain. It is found from the simulation result calculated by HFSS of Ansoft that the cross-polarization isolation is higher than 40dB. This conclusion can provide a good reference to the practical engineering.
出处
《现代电子技术》
2010年第14期114-116,共3页
Modern Electronics Technique
关键词
微带阵列天线
交叉极化隔离度
馈源网络
开槽线
microstrip array antenna
cross-polarization isolation
feed source network
slot line
