Constitutive parameter extraction for single & double negative metamaterials and validation of negative refraction

2007 ◽  
Author(s):  
Yair Hollander ◽  
Reuven Shavit
Keyword(s):  
Negative Refraction ◽  
Parameter Extraction ◽  
Constitutive Parameter ◽  
Double Negative

Negative refraction of plane electromagnetic waves in non-uniform double-negative media

2019 ◽  
Vol 44 (5) ◽  
pp. 1125 ◽  
Author(s):  
L. A. Pazynin ◽  
V. L. Pazynin ◽  
H. O. Sliusarenko
Keyword(s):  
Electromagnetic Waves ◽  
Negative Refraction ◽  
Double Negative

Double Negative Optical Metamaterial with All-Dielectric Fishnet Structure

2013 ◽  
Vol 873 ◽  
pp. 813-818 ◽  
Author(s):  
Chu Wen Lan ◽  
Xiao Jian Fu ◽  
Xiao Ming Liu ◽  
Bo Li ◽  
Ji Zhou
Keyword(s):  
High Performance ◽  
Figure Of Merit ◽  
Negative Refraction ◽  
Wide Band ◽  
Negative Permeability ◽  
Double Negative ◽  
Negative Index ◽  
Left Handed ◽  
Silicon Based ◽  
Multilayer Dielectric

An all-dielectric fishnet metamaterial (DFM) composed of multilayer dielectric structure with periodically patterned holes is proposed to generate left-handed behavior in optical frequency region. Different from the metallic fishnet negative index metamaterial realized by coupling the neighbouring functional layers along the propagation direction, this DFM owes its simultaneous negative permeability and permittivity to the hybrid coupled resonances in the same layer. Based on this configration, a wide-band and polarization-independent negative refraction with maximum figure of merit as large as 13.85 is obtained by a silicon-based DFM at 450 nm wavelength. Simple and easy to fabricate, this concept is believed to provide an alternative route to realize high-performance negative index metamateirals at optical frequencies.

scholarly journals Resonance Characteristics and Effective Parameters of New Left Hand Metamaterial

2015 ◽  
Vol 15 (3) ◽  
pp. 497
Author(s):  
Rajni Rajni ◽  
Anupma Marwaha
Keyword(s):  
Negative Refraction ◽  
New Left ◽  
Unit Cell ◽  
Negative Permittivity ◽  
Negative Permeability ◽  
Double Negative ◽  
Electric Conduction ◽  
Effective Parameters ◽  
Left Hand ◽  
Material Parameters

It is essential to alter effective electromagnetic parameters of a material to enhance its response. In the present work, we propose a novel Left Hand Metamaterial (LHM) structure comprising dual turn spiral resonator (DTSR) and capacitance loaded strips (CLS). This structure is numerically explored to examine the resonance and effective material parameters i.e. permeability and permittivity. The negative refraction in the unit cell is confirmed with identification of double negative region (negative permittivity, ε and negative permeability, µ ) on placing the unit cell in a waveguide with well defined Perfect Electric Conduction/Perfect Magnetic Conduction boundary conditions.

scholarly journals Depiction and analysis of a modified theta shaped double negative metamaterial for satellite application

Open Physics ◽  
2018 ◽  
Vol 16 (1) ◽  
pp. 839-847 ◽  
Author(s):  
Md. Jubaer Alam ◽  
Mohammad Rashed Iqbal Faruque ◽  
Taya Allen ◽  
Sabirin Abdullah ◽  
Mohammad Tariqul Islam ◽  
...  
Keyword(s):  
Satellite Communication ◽  
Negative Refraction ◽  
Dielectric Substrate ◽  
Unit Cell ◽  
Negative Permittivity ◽  
Basic Unit ◽  
Double Negative ◽  
Metamaterial Structure ◽  
Wide Range ◽  
Array Structures

Abstract In this article, a modified Theta shaped, compact double negative metamaterial structure is designed and presented for satellite communication. Two oppositely faced E-shaped resonators are connected with the substantial Theta to complete the structure. A low profile dielectric substrate FR-4 is used to design the 9 × 9 mm2 unit cell which has a succinct structure where the attainment of the resonator is explored both integrally and experimentally. The proposed metamaterial has a transmission coefficient of 13 GHz (bandwidth) with a 500 MHz band gap at the middle. A correlation is made between the basic unit-cell and array structures, and a comparison is shown among 1 × 2, 2 × 2, and 4 × 4 array structures with 1 × 2, 2 × 2, and 4 × 4 unit-cell configurations to validate the performance of the proposed metamaterial. It has also been observed by the Nicolson–Ross–Weir approach at the resonating frequencies. The effective electromagnetic parameters retrieved from the simulation of the S-parameters imply that the metamaterial structure shows negative refraction bands. The structure shows negative permittivity at 2.60 to 5.16 GHz, 6.63 to 9.31 GHz and 13.03 to 16.18 GHz and negative permeability at 7.74 to 13.07 GHz and 13.88 to 16.55 GHz, respectively. It exhibits double-negative phenomena at X and Ku bands with a frequency range of about 1.17 GHz (8.14 – 9.31 GHz) and 1.42 GHz (13.80 – 15.22 GHz), respectively. Having an auspicious design and wide range double negative characteristics, this structure can be applied to satellite communication.

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