研究目的
To study the second resonant mode of the vertical split-ring resonator (VSRR) for the first time and utilize it to construct a rejection plasmonic filter for spoof surface plasmon polaritons (SPPs) at microwave and terahertz frequencies.
研究成果
The second resonant mode of the VSRR is successfully excited and used to create a broadband rejection plasmonic filter with excellent performance, making it suitable for advanced integrated plasmonic devices at microwave and terahertz frequencies. Future work could explore further optimizations and applications.
研究不足
The study is limited to microwave frequencies and specific substrate materials; potential optimizations could include extending to higher frequencies or different materials for broader applications.
1：Experimental Design and Method Selection:
The study involves designing and simulating the VSRR and spoof SPP waveguide using electromagnetic simulation software (CST Microwave Studio) to analyze resonant modes and field distributions. A prototype filter is fabricated and measured to validate the design.
2：Sample Selection and Data Sources:
The VSRR is designed on an F4B substrate with specific permittivity and thickness. The spoof SPP waveguide uses double-side corrugated metallic strips. Data is obtained from simulations and measurements of scattering parameters and field distributions.
3：List of Experimental Equipment and Materials:
F4B substrate (εr = 2.65, thickness H = 0.5 mm), metal patches, metalized vias, coplanar waveguide (CPW), SMA connectors, and fabrication tools for etching and via formation.
4：65, thickness H = 5 mm), metal patches, metalized vias, coplanar waveguide (CPW), SMA connectors, and fabrication tools for etching and via formation.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: Design the VSRR and spoof SPP waveguide with specified parameters. Simulate using CST Microwave Studio with appropriate boundary conditions. Fabricate the filter prototype. Measure transmission coefficients using network analyzers or similar equipment.
5：Data Analysis Methods:
Analyze scattering parameters (e.g., S21) to determine rejection bandwidth and resonant frequencies. Compare simulated and measured results to validate performance.
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