摘要
设计了一种新型的宽波束双频双圆极化层叠结构微带介质天线,该天线可发射L波段的左旋圆极化信号,接收S波段的右旋圆极化信号。天线通过展宽上下2层微带贴片的介质衬底,从而增大天线的波束宽度,3 dB波束宽度可达到160°以上。同时采用4馈点馈电的层叠结构,使用2个3 dB宽带电桥分别对上下2层贴片进行馈电,实现圆极化的同时也大大提高了效率,而且通过调节馈电的位置可以很容易的实现匹配,实验结果表明,该天线具有较好的收发隔离度,非常宽的3 dB波束宽度,而且在波束范围内都有很好的圆极化特性。
A novel wide beam dual-band dual-polarization stacked Microstrip-Dielectric Antenna is analyzed and designed.The antenna transmits left-hand circularly polarized(LHCP) signals in L band and receives right-hand circularly polarized(RHCP) signals in S band.Its 3-dB beamwidth can be as wide as 160° degrees using wider substrate.The antenna has been implemented by two stacked square patches which are fed by four pins placed symmetrically on two main axis.The amplitude and phase relationship between the four pin...
出处
《现代雷达》
CSCD
北大核心
2008年第12期67-69,共3页
Modern Radar
关键词
宽波束
双频
双圆极化
4馈点馈电
微带介质天线
wide beam
dual-band
dual circular polarization
four feed points
microstrip-dielectric antenna
