摘要
设计了一种新型Ku频段全向天线,该天线由双面辐射微带阵列组成,通过串联形式馈电,实现了全向中等增益辐射特性。文中给出了微带阵列天线的设计方法,对该微带阵列天线的阻抗带宽特性、方向图特性和馈电结构进行了分析。结果表明,该微带阵列天线反射损耗小于-10 dB的绝对带宽为1.15 GHz,在可用频带内全向增益为6.8 dB^7.3 dB,E面波束宽度在20°~24°,H面方向图不圆度在±0.5 dB以内。该天线能够满足微波通信系统要求。
A new kind of omnidirectional antenna at Ku-hand with two-sided radiating microstrip array is proposed and designed in this paper. By series feeding, this microstrip array antenna gets omnidirectional and moderate radiation gain characteristic. The de- sign method of this microstrip array antenna is presented, and its impedance bandwidth, radiation pattern characteristic and feeding structure are analyzed. The results show that absolute bandwidth of the designed antenna is about 1.15 GHz with return loss less than - 10 dB. The gain is 6.8 dB -7.3 dB in the operation frequency band, and the beam width in E-plane is from 20~ to 24~. The non-circularity of H-plane pattern is about ~ 0.5 dB. This microstrip array antenna can satisfy the needs of microwave communication system.
出处
《现代雷达》
CSCD
北大核心
2009年第2期71-74,共4页
Modern Radar
基金
"十一五"预研项目
关键词
微带阵列天线
串馈
全向辐射
microstrip array antenna
series feed
omnidirectional radiation
