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URN	etd-0619106-162421
Author	Wei-Yang Wu
Author's Email Address	d9031819@student.nsysu.edu.tw
Statistics	This thesis had been viewed 5575 times. Download 2326 times.
Department	Electrical Engineering
Year	2005
Semester	2
Degree	Ph.D.
Type of Document
Language	English
Title	The Analysis of Electrically Large Left-Handed Metamaterial Based on Mushroom Structure Using FDTD Approach
Date of Defense	2006-06-03
Page Count	93
Keyword	Mushroom Structure Finite-Difference Time-Domain Method Left-Handed Metamaterial
Abstract	A full wave finite-difference time-domain method (FDTD) combined with thin-wire and thin-slot algorithms to analyze a metamaterial fabricated with periodic mushroom structures, is proposed in this dissertation. This proposed method is suitable for analyzing problems involving large structures with fine structural details. A periodic analysis for mushroom structures is presented. Only a single unit mushroom cell is required to present the phenomena of infinite periodicity with the help of periodic boundary conditions (PBCs). The composite right-/left-handed (CRLH) transmission line (TL) approach is introduced and used to approximate CRLH metamaterial through lumped L and C. Finally, several CRLH metamaterial mushroom-based structures are investigated. A 19 by 8 flat microwave lens and a parabolic microwave lens structure composed of 410 unit mushroom cells are investigated. These structures demonstrate negative refractive index (NRI) characteristics while operate in the left-hand (LH) region. The simulation and measurement results of one- and two-dimensional CRLH mushroom-based structures are compared.
Advisory Committee	Kin-Lu Wong - chair Tzong-Lin Wu - co-chair Ken-Huang Lin - co-chair Yu-De Lin - co-chair Ming-Cheng Liang - co-chair Tzyy-Sheng Horng - co-chair Hsueh-Yung Chao - co-chair Chih-Wen Kuo - advisor
Files	etd-0619106-162421.pdf indicate access worldwide
Date of Submission	2006-06-19

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