中文摘要：

设计了一款工作在太赫兹波段的类三角形异向介质单元,对传输系数进行处理得到单元的等效介电系数和有效磁导率,数据结果表明该单元在太赫兹波段出现双负频段.通过将该类三角形异向介质应用于太赫兹波段的喇叭天线,利用零折射率特性制作天线填充介质实现电磁波的定向辐射,减小天线的后向波能量损耗,达到提高天线方向性系数和增益的目的.实验结果表明：加载类三角形异向介质单元后的喇叭天线的后向波辐射减弱、前向辐射效率增强,方向性系数提高了46.86,增益提高了2.77dB.

英文摘要：

Presenting a triangular metamaterials structure unit and retrieve the effective permittivity and permeability parameters from the transmission and reflection data. Simulation results show that the combined unit exhibits left-hand passband in Terahertz. Apply triangular electromagnetic metamaterials to conventional THz and use the characteristics of zero refractive index to produce horn antennas superstrate for directional radiation of electromagnetic, so as to improve the antenna directivity and gain. The experimental results show that.. Antenna with triangular magnetic metamaterials results in backward wave radiation weaken, forward radiation efficiency enhancement and directivity factor increased by 46. 86 and gain increased by 2. 77dB.