一种基于介质谐振器的新型电磁超材料

A novel kind of metamaterial based on dielectric resonator

摘要:

文章设计了一种基于介质谐振器的新型混合左右手结构。该结构由工作在横电模式TE的介质谐振器嵌入到平行平板波导中组成。数值分析表明：工作频带为12 GHz~14 GHz，在13.15 GHz频率下相移为零。该结构在整个通带内插入损耗低于0.6 dB，同时具有极低的通带波纹，表现出了良好的传输特性。与普通的混合左右手结构相比，其结构简单，插入损耗较低，在高频时导体损耗也较低，在超级透镜、天线等领域具有很好的应用前景。

Abstract:

In recent years，left-handed metamaterials have been extensively studied due to their unique properties. A new kind of structure with left-handed electromagnetic characteristics was designed and analyzed. It was composed of dielectric resonators working at transverse electric resonant mode, which were embedded into a parallel plate waveguide. It worked well from 12 GHz to 14 GHz，and the transition frequency was at 13.15 GHz. The proposed metamaterial demonstrated a good transmission performance with insertion loss less than 0.6 dB and low pass-band ripples. Compared with conventional CRLH structures，the structure is simple and with low insertion loss, low conductor loss at high frequency band. It can be applied to super lens and antennas in future.