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

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2 Citations (Scopus)

Abstract

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°, 45° (positive refraction), and −25° (negative refraction) with respect to the metamaterial structure.

Original languageEnglish
Article numbere2319
JournalInternational Journal of Numerical Modelling: Electronic Networks, Devices and Fields
Volume31
Issue number5
DOIs
Publication statusPublished - 1 Sep 2018

Fingerprint

FDTD Method
Beam Steering
Dispersive Media
Metamaterials
Refraction
Z transforms
Auxiliary equation
Finite-difference Time-domain Method
Differential equations
Finite difference time domain method
Differential equation
Negative Refraction
Transform
Left handed
Constitutive Relations
Numerical Modeling
Electromagnetic Wave
Electromagnetic waves
Convert
Frequency Domain

Keywords

  • beam steering
  • dispersive material
  • FDTD method
  • gradient-refractive index

ASJC Scopus subject areas

  • Modelling and Simulation
  • Computer Science Applications
  • Electrical and Electronic Engineering

Cite this

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abstract = "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°, 45° (positive refraction), and −25° (negative refraction) with respect to the metamaterial structure.",
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AU - Islam, Mohammad Tariqul

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N2 - 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°, 45° (positive refraction), and −25° (negative refraction) with respect to the metamaterial structure.

AB - 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°, 45° (positive refraction), and −25° (negative refraction) with respect to the metamaterial structure.

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