摘要
以传统的介质型光子晶体结构为基础,提出了一款新型的光子晶体微带天线,其介质板中空气孔洞按三角形点阵形式周期排列于介质板上下两层,其高度为原有高度的一半,研究该结构对天线性能的影响。结果表明:该结构的引入使天线的回波损耗降低到–44 dB,天线具有更好的阻抗特性和辐射效率,天线全向性增强,达到了改善天线性能的目的。此外,由于该结构的特殊性,讨论了天线加入缺陷结构后的禁带特性。
A novel photonic crystal antenna was proposed based on the conventional dielectric structure. The triangular photonic crystal lattices were introduced to the antenna and they were periodic distribution according to the upper and the lower surfaces. The depth of the air holes was half of the height of dielectric substrate. The effects of this structure on the antenna were studied. The result shows that the return loss of the antenna go down about -44 dB, the directivity of antenna is improved, indicating the better resistance characteristics, efficiency and omni-directivity. The goal to improve antenna performance is got. Moreover, the characteristic of photonic forbidden band is discussed based on the particularity of the structure.
出处
《电子元件与材料》
CAS
CSCD
北大核心
2012年第11期63-66,共4页
Electronic Components And Materials
关键词
微带天线
光子晶体
回波损耗
禁带特性
microstrip antenna
photonic crystal
return loss
forbidden band characteristic
