Engineering the Input Impedance of Electric Planar Metamaterials Analogue of Dipole Array

Since the demand of metamaterial （MM） based devices for practical applications is increased, the method with input impedance of dipole aims to produce fast results with reasonable accuracy for its design proposed. In this work, the unit of MM is equivalent to a dipole and then MM could be treated as a dipole array. An analysis is performed based on classical microwave dipole and numerical simulation by using the finite-difference time- domain for different MM configurations in the form of dipoles array. Additionally, a quality factor （Q-factor） based analysis is shown to yield simulation results which are in good agreement with the experiment. In essence, this shows that we could use antenna theory and numerical method to analyze MM thus opening the doors for a more efficient parameter optimization method.     

用于THz波段脉冲空间整形的滤波透镜的电磁场分析

提出了一种结构新颖的用于THz波段的滤波透镜,其特点是将滤波和聚焦的性能结合在一起,从而能有效地在某个特定波段内聚焦THz脉冲的输出能量. 设计了带通和带阻两种性能的滤波透镜,并用电磁场时域差分方法进行了数值研究,证明了设计的正确性. 关键词： THz 滤波 透镜