Beam steering of eye shape metamaterial design on dispersive media by FDTD method

被引：15

作者：

Hasan, Md. Mehedi ^{[1
]}

Faruque, Mohammad Rashed Iqbal ^{[1
]}

Islam, Mohammad Tariqul ^{[2
]}

机构：

[1] Univ Kebangsaan Malaysia, Space Sci Ctr ANGKASA, Bangi 43600, Malaysia

[2] Univ Kebangsaan Malaysia, Dept Elect Elect & Syst Engn, Bangi 43600, Malaysia

来源：

INTERNATIONAL JOURNAL OF NUMERICAL MODELLING-ELECTRONIC NETWORKS DEVICES AND FIELDS | 2018年 / 31卷 / 05期

关键词：

beam steering; dispersive material; FDTD method; gradient-refractive index; MICROWAVE-FREQUENCIES; REFRACTIVE-INDEX; LENS ANTENNA; SIMULATION;

D O I：

10.1002/jnm.2319

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

The finite difference time domain method is applied for numerical modelling of composite dispersive material-based proposed metamaterial, where the electromagnetic waves are propagating along the y-axis with some exceptional properties in this paper. The existing frequency dispersive finite difference time domain method can be categorised into auxiliary differential equation method and the Z-transform method, both of them are analysed in this paper. The auxiliary differential equation method has been introduced additional differential equations for describing frequency-dependent material characteristics, and Z-transform converts the frequency domain constitutive relations to Z-domain relation. The proposed left-handed metamaterial, single unit cell shows resonance at 5.48 GHz and the beam refraction characteristics by the incident beams on the structure. The incident beams are refracted 90 degrees, 45 degrees (positive refraction), and -25 degrees (negative refraction) with respect to the metamaterial structure.

引用

页数：12

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