研究目的
To investigate E-CRLH transmission line metamaterial structures and present design procedures for dual- and quad-band transmission lines with arbitrary phase shifts at operating frequencies.
研究成果
The paper presents a novel design methodology with closed-form formulas for dual- and quad-band E-CRLH transmission lines, enabling arbitrary phase shifts at arbitrary frequencies. The derived dispersion and impedance characteristics support applications in various microwave devices, filling a gap in the literature for systematic design approaches.
研究不足
The paper is theoretical and does not include experimental validation or practical implementation. It assumes lossless transmission lines and may not account for real-world imperfections or fabrication challenges.
1：Experimental Design and Method Selection:
The paper uses theoretical modeling and mathematical derivations based on circuit models of E-CRLH structures, including propagation constant and characteristic impedance formulas. It involves designing procedures for achieving specific phase shifts at arbitrary frequencies.
2：Sample Selection and Data Sources:
No specific samples or datasets are mentioned; the work is theoretical and analytical.
3：List of Experimental Equipment and Materials:
No experimental equipment or materials are listed; the paper focuses on theoretical design and parameter extraction.
4：Experimental Procedures and Operational Workflow:
The methodology includes deriving parameters from equations, solving for lumped element values, and plotting dispersion and impedance diagrams. Steps involve mathematical manipulations and applying conditions for balanced modes.
5：Data Analysis Methods:
Analysis is based on derived formulas and graphical plotting of dispersion and characteristic impedance, using mathematical software or tools for visualization (not specified).
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