研究目的
Investigating the design of polarizers consisting of stacks of several meander-line gratings for axial-ratio enhancement using an analytical equivalent-circuit approach.
研究成果
The study demonstrates that axial-ratio bandwidth can be increased by stacking MLGs, although it deteriorates under oblique incidence. The circuit model provides good agreement with CST results, offering a valuable design tool and physical insight into MLGs behavior.
研究不足
The accuracy of the circuit model deteriorates under oblique incidence, especially beyond 24 GHz, due to the stronger influence of the incidence angle over the surface current excited in the meander.
1:Experimental Design and Method Selection:
The study employs an analytical equivalent circuit model to characterize periodic meander-line architectures.
2:Sample Selection and Data Sources:
The analysis focuses on two examples of polarizers, consisting respectively of stacks of two or three MLGs.
3:List of Experimental Equipment and Materials:
The study compares results obtained by the circuit model with those provided by CST, a commercial software.
4:Experimental Procedures and Operational Workflow:
The methodology involves the characterization of MLGs under normal and oblique incidences.
5:Data Analysis Methods:
The study compares the scattering properties and axial-ratio bandwidth obtained by the circuit model and CST.
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