Compact Left-Handed Meta-Atom for S-, C- and Ku-Band Application
Compact Left-Handed Meta-Atom for S-, C- and Ku-Band Application
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DOI：
10.3390/app7101071
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发表时间：
2017-10-01
影响因子：
2.7
通讯作者：
Islam, Mohammad Tariqul
中科院分区：
文献类型：
--
作者：
Hasan, Md. Mehedi;Faruque, Mohammad Rashed Iqbal;Islam, Mohammad Tariqul
本文提出了一种用于 S、C 和 Ku 波段应用的新型紧凑左手元原子。所提出的结构提供了较宽的带宽，并在 0 度、90 度、180 度和 270 度（xy 轴）旋转时表现出左手特性。此外，还研究了1 x 2、2 x 2、3 x 3和4 x 4阵列在上述旋转角度下的左手特性和宽带宽。在这项研究中，元原子的设计是通过在外部和内部方形环形谐振器处创建裂缝，并将金属臂放置在内环谐振器的中间。该臂还连接到内环谐振器的上部和下部，后来，设计出现为I形开口环谐振器。市售的基于有限积分技术 (FIT) 的电磁模拟器 CST Microwave Studio 用于设计和模拟目的。 1 x 2、2 x 2、3 x 3 和 4 x 4 阵列在每个旋转角度的测量数据与晶胞的模拟数据非常吻合。由于0度和180度旋转时的有效介质比（EMR）为8.50，所提出的元原子结构尺寸紧凑。此外，由于品质因数为 82，设计的元原子可灵活用于高性能天线、滤波器和传感器应用。因此，元原子集成天线表现出多频段，最高峰值增益为5dBi，用作长距离无线电通信频率。
A new compact left-handed meta-atom for S-, C- and Ku-band applications is presented in this paper. The proposed structure provides a wide bandwidth and exhibits left-handed characteristics at 0 degrees, 90 degrees, 180 degrees and 270 degrees (xy-axes) rotations. Besides, the left-handed characteristics and wide bandwidth of 1 x 2, 2 x 2, 3 x 3 and 4 x 4 arrays are also investigated at the above-mentioned rotation angles. In this study, the meta-atom is designed by creating splits at the outer and inner square-shaped ring resonators, and a metal arm is placed at the middle of the inner ring resonator. The arm is also connected to the upper and lower portions of the inner ring resonator, and later, the design appears as an I-shaped split ring resonator. The commercially available, finite integration technique (FIT)-based electromagnetic simulator CST Microwave Studio is used for design and simulation purposes. The measured data comply well with the simulated data of the unit cell for 1 x 2, 2 x 2, 3 x 3 and 4 x 4 arrays at every rotation angle. Owing to the effective medium ratio (EMR) of 8.50 at 0 degrees and 180 degrees rotations, the proposed meta-atom structure is compact in size. Moreover, due to the quality factor of 82, the designed meta-atom is flexible for high-performance antenna, filter and sensor applications. Therefore, the meta-atom integrated antenna shows multi frequency bands with the highest peak gain of 5 dBi, which is used as the long distance radio communication frequency.