摘要
常规准八木微带天线受振子结构的限制,阻抗带宽有限。针对准八木微带天线的阻抗特性提出2种改进方案。方案一是在保证辐射带宽的基础上,利用"领结"型的贴片形式有效展宽天线的阻抗带宽。方案二通过改变引向器的结构,使其工作于C波段。仿真结果表明,2种改进型天线都达到了50%以上的阻抗带宽(反射系数小于-10 dB),验证了方案的有效性。
The impendence bandwidth of conventional qusai-yagi microstrip antenna is limited by the traditional rod structure of dipole. Two modified antennas which have wider impendence bandwidth are proposed in this paper. Bow-tie style radiating patch is introduced to extend the impendenee bandwidth of antenna effectively. Qusai-yagi microstrip antenna is also made to operate in C- band by changing the pattern of director. Simulation results indicate that the proposed antennas have more than 50 % impendence bandwidth with less than - 10 dB return loss.
出处
《现代雷达》
CSCD
北大核心
2009年第3期60-62,共3页
Modern Radar
