研究目的
To design and analyze a controllable miniaturized tri-band frequency selective surface (FSS) with simple design process for multiband applications.
研究成果
A miniaturized combined-element FSS with three transmission poles and two transmission zeros is proposed. The structure shows stable frequency response with different incident angles and polarization modes. The equivalent circuit method effectively analyzes the structure. The measurement results agree well with simulations, and cascading two FSS structures achieves higher-order frequency selectivity.
研究不足
The shift of the measured operating frequency can be attributed to the inaccuracy of fabrication and permittivity of the substrate.
1：Experimental Design and Method Selection:
The design combines complementary meandered structures and complementary grid structures to achieve tri-band characteristics. The equivalent circuit method is used for analysis.
2：Sample Selection and Data Sources:
A prototype is fabricated on a dielectric substrate with specific permittivity and loss tangent.
3：List of Experimental Equipment and Materials:
Ansoft HFSS for simulation, standard printed circuit board (PCB) for fabrication.
4：Experimental Procedures and Operational Workflow:
The FSS is designed to transmit signals at
5：3, 5, and 4 GHz while reflecting signals at 0 and 9 GHz. Measurements are conducted in a microwave anechoic chamber. Data Analysis Methods:
Full-wave simulation and equivalent circuit analysis are used to evaluate the FSS performance.
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