摘要
通过将常规的空气板线BALUN微带化,从而建立一种新型微带BALUN。该BALUN引入一个并联谐振电路,可以有效补偿半波振子的串联电抗而实现微带半波振子带宽的最大化。采用此种BAL-UN设计制作了一个L波段微带偶极子天线单元。测试结果表明:该半波振子天线在21.8%的带宽内驻波比优于1.18,带内交叉极化优于-21 dB,接近理论最大设计带宽。
A novel microstrip BALUN is described in this paper. This BALUN can effectively compensate the series reactances by introducing a shunt resonant circuit and thus achieve the maximum bandwidth of microstrip dipole antenna. An L-band microstrip dipole antenna wilh this kind of microstrip BALUN is designed, and it is verified that the antenna reveals a 21.8% bandwidth for voltage standing-wave ratio of less than 1.18 and has an excellent cross-polarization characteristics with less than -21 dB.
出处
《雷达科学与技术》
2006年第4期236-239,共4页
Radar Science and Technology
基金
国防"十五"预研课题
关键词
微带BALUN
微带偶极子天线
宽带
microstrip BALUN
microstrip dipole anlenna
wide bandwidth
