摘要
将树枝状结构负磁导率材料作为微带天线的基板,模拟和实验研究了负磁导率材料对S波段微带天线的影响。实验结果表明,由于负磁导率材料的引入,微带天线的性能得到了明显改善,微带天线的侧向辐射减弱,前向辐射增强,定向性和增益提高,相对带宽增大。经过优化设计负磁导率S波段微带天线的增益相比普通微带天线提高了1.73 dB,相当于有效辐射功率提高了49%;E面半功率波束宽度收缩了17°。
Using negative magnetic permeability material as substrate of patch antenna, we studied theoretically and experimentally the influence of the negative magnetic permeability material on microstrip antennas. The study results indicated that the performante of microstrip antennas is improved significantly when the negative magnetic permeability material is introduced. Compared to conventional mierostrip antennas, the backward radiation of proposed microstrip antenna decreased and the forward radiation increased. Moreover, the directivity of microstrip antennas is improved and its gain enhanced. By an optimized design, the gain of the microstrip antenna has been enhanced by 1.73 dB compared to conventional microstrip antennas.
出处
《现代雷达》
CSCD
北大核心
2009年第9期63-66,共4页
Modern Radar
基金
国家自然科学基金(50632030
50872113)
国家重点基础研究发展计划(2004CB719805)
国防基础科研项目资助课题
关键词
树枝状结构
微带天线
负磁导率
表面波
dendritic structure
mierostrip antenna
negative magnetic permeability
surface wave
