研究目的
Investigating the design and performance of a band-pass filter based on half-mode substrate integrated waveguide (HMSIW) and spoof surface plasmon polaritons (SSPPs) for microwave frequencies.
研究成果
The proposed band-pass filter based on HMSIW and double-layer SSPPs demonstrates good performance with wider bandwidth and higher transmission efficiency. The independent control of cut-off frequencies through parameter adjustments and the filter's compact size make it suitable for microwave frequency applications.
研究不足
The measured return loss and insertion loss are slightly greater than the simulated results at high frequency, possibly due to fabrication process errors and measurement tool inaccuracies.
1：Experimental Design and Method Selection:
The study employs CST Microwave Studio for simulation and analysis of the band-pass filter's dispersion relations, S-parameters, and surface fields. A prototype is fabricated and measured using a Vector Network Analyzer.
2：Sample Selection and Data Sources:
The prototype is fabricated on a 0.5 mm thick F4B substrate with specific dimensions and properties.
3：5 mm thick F4B substrate with specific dimensions and properties.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: F4B substrate (εr = 2.65, tanδ = 0.0015), copper layer (0.018 mm thickness), Vector Network Analyzer for measurements.
4：65, tanδ = 0015), copper layer (018 mm thickness), Vector Network Analyzer for measurements.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The filter's performance is simulated, a prototype is fabricated, and its S-parameters are measured to validate the design.
5：Data Analysis Methods:
The dispersion characteristics and parametric studies are analyzed to understand the filter's performance and controllability.
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