Title page for etd-0619106-162421


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URN etd-0619106-162421
Author Wei-Yang Wu
Author's Email Address d9031819@student.nsysu.edu.tw
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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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