基于时域有限差分法的口径耦合微带天线的研究  

Study on Aperture-coupled Microstrip Antenna Based on FDTD Method

作　　者：车仁信[1] 程鑫[1] 张坤武[1] 

机构地区：[1]大连交通大学电气信息学院,大连116028

出　　处：《微波学报》2006年第1期39-43,共5页Journal of Microwaves

基　　金：铁道部专项基金(J2000Z052);辽宁省教育厅科学研究计划基金(2004D024)

摘　　要：借助于时域有限差分法对口径耦合微带天线进行了分析论述。分别讨论了贴片长度、宽度及耦合缝隙的长度、宽度对天线谐振频率和谐振电阻的影响,提出了在天线贴片周围加销钉的天线模型,以抑制表面波。在FDTD分析方法的基础上,构造出两个特殊盒子来计算远区辐射场。用所提出的模型和分析方法对Ku波段12GHz口径耦合微带天线进行了扫描研究,为实际应用提供了有一定参考意义的图形及数据。Aperture-coupled Microstrip antenna was analyzed by means of finite-difference time - domain （FDTD）. The influence of the length and the width of the patch and coupling aperture on resonance frequency and resonance resistance are discussed respectively. In order to suppress surface waves, dowels were added surrounding the patch of the antenna and the antenna model was put forward. Based on the method of FDTD, two special boxes were constructed to calculate the far area radiation field. Using the model and the analysis methods mentioned above. A Ku band （ 12 GHz） aperture-coupled mi- crostrip antenna was studied and some curves and data were given for engineering reference.

关 键 词：微带天线 口径耦合 时域有限差分法 销钉 表面波 

分 类 号：TN822[电子电信—信息与通信工程]