研究目的
To propose a miniaturized dual-bandstop frequency selective surface (FSS) with convoluted structures for isolating wireless networks, achieving stable performance under different polarizations and incidence angles.
研究成果
The proposed convoluted structure enables a miniaturized dual-bandstop FSS with unit cell size of 0.059λ * 0.059λ and thickness of 0.58 mm. It exhibits excellent stability in working frequencies, bandwidths, and low insertion loss (0.28 dB) under different polarizations and incidence angles, making it suitable for reducing mutual interference in wireless networks. Future work could explore broader tuning ranges and integration into practical devices.
研究不足
The study focuses on dual-bandstop FSS and may not generalize to other frequency bands or multi-band applications. The miniaturization is achieved but could be further optimized for even smaller sizes or different materials. The experimental setup is in a controlled environment, and real-world interference scenarios are not fully addressed.
1：Experimental Design and Method Selection:
The design involves a convoluted structure for the FSS unit cell, simulated using commercial software HFSS. An equivalent circuit model is developed to analyze frequency performance, and current distributions are studied to explain resonance behaviors.
2：Sample Selection and Data Sources:
A prototype FSS is fabricated with specific dimensions (
3：56*56*58 mm3) using Rogers4350B as the dielectric substrate. List of Experimental Equipment and Materials:
2 Horn antennas for transmission and reception, Rogers4350B substrate (relative permittivity
4：66), and fabrication tools for the FSS prototype. Experimental Procedures and Operational Workflow:
The FSS is placed between horn antennas in free space for far-field measurements of transmission coefficients under TE and TM polarizations and various incidence angles.
5：Data Analysis Methods:
Simulation results from HFSS are compared with measured data; equivalent circuit parameters are fitted, and statistical analysis of frequency stability is performed.
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