摘要
设计提出了一种低温共烧陶瓷(LTCC)新型分形单元"chalipa"微带天线。该天线采用"chalipa"新型分形结构,分形单元由2个具有一定宽度的垂直交叉的"S"微带线组成,其垂直交叉的特性形成圆形旋转的贴片表面电流,从而使电磁场旋转产生圆极化辐射;微带线的宽度与探针的50Ω阻值相匹配,进一步提升天线带宽。仿真结果表明,该天线工作于1.268GHz时,阻抗带宽大于80MHz,天线的轴比小于0.5dB,且增益达到1.45dBi。
A fractal microstrip patch antenna named ＂chalipa＂ was designed based on LTCC technology. The novel antenna was composed of ＂ehalipa＂ structure, which consists of two vertical cross with certain width of mi- crostrip lines of the ＂S＂. The characteristics of the vertical cross formed the patch surface current of circular rota- tion. So that the electromagnetic field rotation would produce the circularly polarized radiation. Through matching the width of the microstrip line and probe of 50Ω resistance, the antenna bandwidth was enhanced. The simulated results showed that the impedance bandwidth of the antenna exceeded 80 MHz, the axial ratio was less than 0.5 dB and the gain approached to 1.45 dBi when the antenna operated at the center frequency of 1. 268 GHz.
出处
《压电与声光》
CSCD
北大核心
2013年第2期290-292,共3页
Piezoelectrics & Acoustooptics
基金
国家高技术研究发展计划基金资助项目(2009AA03Z414)
