研究目的
Designing an efficient FSS linear polariser with broadband and high-efficiency properties for secure building applications.
研究成果
The proposed FSS structure demonstrates excellent performance for oblique incidence ranging from 0? to 40? in terms of polarisation conversion efficiency and bandwidth, making it a suitable choice for secure building applications.
研究不足
The study mentions that most conventional reflective polarisation converters have a narrow bandwidth and are backed by a uniform ground plane, which is not desirable for many applications such as secure buildings where the purpose is to prohibit unwanted frequencies and allow wanted ones to enter the building.
1：Experimental Design and Method Selection:
The study proposes a polarisation convertor FSS unit cell backed by pinwheel loop shape ground. The single layered FSS structure is designed to have a wide bandwidth and high PCR.
2：Sample Selection and Data Sources:
A prototype of the FSS structure is fabricated for experimental validation.
3：List of Experimental Equipment and Materials:
The structure uses an RT/duroid 5880 dielectric substrate with a relative permittivity of ?r?=?
4：Experimental Procedures and Operational Workflow:
Reflection parameters of the proposed structure are measured using an E8364B PNA network analyser connected to two identical linearly polarised standard-gain horn antennas in an EM anechoic chamber.
5：Data Analysis Methods:
The performance is verified through co- and cross-reflection amplitudes and angles for non-orthogonal incidence angles.
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