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Title of Thesis

Tuned Metamaterials

Author(s)

Muhammad Faisal Khan

Institute/University/Department Details
Ghulam Ishaq Khan Institute of Engineering Sciences & Technology, Khyber Pakhtunkhwa
Session
2011
Subject
Electonic Engineering
Number of Pages
118
Keywords (Extracted from title, table of contents and abstract of thesis)
Materials, Results, Metamaterials, Resonators, Tuned, Frequency, Analytical, Tunable, Devices, Paired

Abstract
Metamaterials (MTM) are composite materials that provide some unique characteristics which are not available by nature.But there is one major drawback or limitation of MTM which is its 矩ed and narrow working frequency region.To overcome this limitation, there are few techniques, presented in this thesis, to vary the working frequency band of MTM.
As MTM are arti畚ial materials, so there are various resonators available in literature, presented for MTM. In this thesis, three resonators, split ring resonator (SRR), S-shaped resonator (SSR) and single side paired S-ring resonator (SSPSRR) have been chosen from literature and di容rent techniques to shift their resonant frequencies are presented.For SRR, a tunable case i.e., inner ring shorted split ring resonator (IRS-SRR) is pre- sented in this thesis.The analytical expression of the e容ctive permeability of IRS-SRR is calculated and for the veri畚ation of the analytical work, the experimental results are also included in this thesis.
The analytical expression for the e容ctive permeability of SSR is also presented in this thesis.Two tunable or modi疾d cases of SSR, i.e., bottom metallic strips shorted S-shaped resonator (BSSR) and top-bottom metallic strips shorted S-shaped resonator (TBSSR) are presented in this thesis. The analytical expressions of the e容ctive permeabilities of BSSR and TBSSR are also calculated. For veri畚ation of the analytical work of SSR, BSSR and TBSSR, experimental results are included in this thesis.Similar to SSR, the analytical expression of the e容ctive permeability of SSPSRR is presented in this thesis and the experimental results are also included to verify the analytical work.Two tunable cases of SSPSRR, i.e., bottom metallic strips shorted single side paired S- ring resonator (B-SSPSRR) and top-bottom metallic strips shorted single side paired S-ring resonator (TB-SSPSRR), are also presented in this thesis along with experimental results.
Other than the tunable cases of various resonators, rotation of resonators is presented in this thesis as a technique to vary the working frequency of MTM.This technique has been applied on SSR, SSPSRR and their respective tunable cases in this thesis and the experimental results are presented for justi畚ation of this technique.
There are number of devices (made using MTM), are available in literature.All these devices can be upgraded to work as tunable devices using the techniques presented in this thesis.

Download Full Thesis
4,983 KB
S. No. Chapter Title of the Chapters Page Size (KB)
1 0 CONTENTS

 

ix
51 KB
2

1

INTRODUCTION

 

1
72 KB
3 2 METAMATERIALS

2.1 Introduction
2.2 Material Classi畚ation
2.3 Negative Refraction and Backward waves
2.4 E容ctive Medium
2.5 Negative Permittivity
2.6 Negative Permeability
2.7 Propagation of electromagnetic waves in Metamaterial (Left handed material)
2.8 Published tuning techniques for Metamaterials
2.9 Summary

3
190 KB
4 3 INNER RING SHORTED SPLIT RING RESONATOR (IRS-SRR) - A TUNABLE CASE OF SPLIT RING RESONATOR (SRR)

3.1 Introduction
3.2 Split ring resonator (SRR)
3.3 Published research work related to split ring resonator (SRR)
3.4 Contribution of this chapter
3.5 Inner ring shorted split ring resonator (IRS-SRR) - Analytical solution of the effective permeability
3.6 Experimental results
3.7 Comparison of analytical and experimental results
3.8 Summary

22
1,630 KB
5 4 S-SHAPED RESONATOR (SSR) AND ITS MODI浩D CASES

4.1 Introduction
4.2 Published research work related to S-shaped resonator (SSR)
4.3 Contribution of this chapter
4.4 S-shaped resonator (SSR)
4.5 Modified cases of S-shaped resonator (SSR)
4.6 Analytical results
4.7 Experimental results
4.8 Comparison of the analytical and the experimental results
4.9 How to get S-shaped resonator (SSR) of desired working frequency
4.10 E容ct of rotation of S-shaped resonator (SSR) and its modi疾d cases on their respective left handed (LH) frequency bands
4.11 Summary

41
1,538 KB
6 5 SINGLE SIDE PAIRED S-RING RESONATOR (SSPSRR) AND ITS TUNABLE CASES

5.1 Introduction
5.2 Published research work related to single side paired S-ring resonator (SSPSRR)
5.3 Contribution of this chapter
5.4 Single side paired S-ring resonator (SSPSRR)
5.5 Tunable cases of single side paired S-ring resonator
5.6 Comparison of left handed (LH) frequency bands of single side paired S-ring resonator (SSPSRR) and its tunable cases
5.7 E容ct of rotation of single side paired S-ring resonator (SSPSRR) and its tunable cases on their respective left handed (LH) frequency bands
5.8 Summary

69
1,735 KB
7 6 CONCLUSIONS AND FUTURE WORKS

6.1 Conclusions
6.2 Future Work

93
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8

7

BIBLIOGRAPHY

 

96
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