School of Electromechanic and Information Engineering,China University of Mining and Technology( Bejjing) School
of Electric and Information Engineering,Beiing Polytechnic College

为满足煤矿井下天线小型化以及本安设计的要求,分析了超宽带信号在矿井通信中的适应性,并设计了超宽带单极子介质谐振器天线,根据单极子天线和介质谐振器放置在介质基板上的不同方式可分为交叉式或平面式2种结构,天线长×宽×厚仅为30.5 mm×15 mm×5.762 mm,实现了天线的小型化。该天线在宽频段中有较高的辐射效率,具有良好的方向性,结构简单。应用高频仿真软件HFSS分别对交叉式和平面式单极子介质谐振器天线进行建模,分别分析了反射系数、辐射方向图、天线增益等主要性能,交叉式介质谐振器天线工作频率为4.2~10.9 GHz,相对带宽达到89%,为进一步验证超宽带单极子介质谐振器天线的性能,进行了试验测试,结果表明超宽带单极子介质谐振器天线具有良好的方向性,验证了仿真结果的正确性。

In order to meet the small type and intrinsic design requirements of an antenna in underground mine,the paper analyzed the suitability of ultra wideband sig nal in mine communication. An ultra wideband monopole medium resonator antenna was designed. According to different method to set on the medium substrate,the mono pole antenna and medium resonator could be divided to cross mode or plane mode structures. The length,width,thick of antenna was respectively 30.5,15,5. 762 mm and t hus small type antenna could be realized. The antenna would have high radiation efficiency in the broad band,an excellent directivity and a simple structure. A high frequen cy simulation software HFSS was applied to the modeling on the cross type and plane type monopole medium resonator antenna individually and to individually analyze ref lection coefficient,radiation direction drawn,antenna increased benefit and other main performances. The working frequency of cross medium resonator antenna was 4.2 ~ 10.9 GHz and the relevant bandwidth reached at 89%. In order to further verify performances of the ultra wideband monopole medium resonator antenna,a test and measu rement was conducted. The results showed that ultra wideband monopole medium resonator antenna would have excellent directivity and verified the correction of the simu lation results.

国家高技术研究发展计划(863计划)资助项目(2012AA062203)；国家自然科学基金资助项目(U1261125)；北京市教育委员会创新团队建设提升计划资助项目(IDHT20130511)；