研究目的
Investigating the generality of self-complementary tessellations as universal design approach for LP-to-CP transforming frequency selective surfaces across different frequency ranges.
研究成果
The work demonstrates that arbitrary self-complementary patterns can serve as FSSs for LP-to-CP transformation, applicable across a broad range of frequencies. The approach is general, as shown by the successful use of Escher’s tessellations and similar 'patch-and-hole' FSSs in microwave and sub-millimeter wave ranges.
研究不足
The main limitation is reflection and LP-CP conversion only for a particular polarization angle of an incident wave. Additionally, the dielectric substrate affects the purity of the CP at certain frequencies.
1：Experimental Design and Method Selection:
The study involved numerical simulations and experimental validation of self-complementary FSSs for LP-to-CP transformation. Two Escher’s tessellations were simulated as microwave FSSs, and similar 'patch-and-hole' FSSs were compared in microwave and sub-millimeter wave ranges.
2：Sample Selection and Data Sources:
Samples included 'Pegasus' and 'Crab' tessellations by Escher and 'patch-and-hole' FSSs. Data was obtained through numerical simulations and experimental measurements.
3：List of Experimental Equipment and Materials:
CST Microwave Studio for simulations, Arlon 25N and polypropylene substrates for FSS fabrication.
4：Experimental Procedures and Operational Workflow:
Simulations were conducted for normal plane wave incidence in specified frequency ranges. Experimental measurements were performed on fabricated FSSs.
5：Data Analysis Methods:
Transmission coefficient magnitudes from LP to CP were analyzed to assess polarization transformation efficiency.
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