研究目的
Investigating the analysis of elliptical aperture metasurface antennas using a Method of Moments (MoM) based approach with Fourier-Bessel basis functions (FBBFs) and comparing it with full wave Contour-FFT (CFFT) based MoM simulation.
研究成果
Full-domain basis functions are effective for the analysis and design of metasurfaces, allowing for fast design and translation into actual patches. The quick analysis tool facilitates efficient design processes, with performance verified through iterative Contour-FFT techniques, showing good agreement in radiation patterns.
研究不足
The study is limited by the IBC implementation process with square patches and edge diffraction effects, which may explain differences in simulated patterns, especially on the side lobes.
1：Experimental Design and Method Selection:
The study employs a Method of Moments (MoM) based analysis for elliptical aperture metasurface antennas, utilizing Fourier-Bessel basis functions (FBBFs) inspired by circular domain analysis.
2：Sample Selection and Data Sources:
The analysis focuses on a scalar MTS designed to radiate a broadside circularly polarized beam, with an elliptical aperture of 3λ semi-major axis and
3：5λ semi-minor axis. List of Experimental Equipment and Materials:
The MTS IBC is implemented with square patches and excited with a centered dipole.
4：Experimental Procedures and Operational Workflow:
The MTS is modeled as a sheet transition impedance boundary condition (IBC), and the analysis involves stretching the FBBFs for the elliptical domain and comparing results with CFFT based MoM simulation.
5：Data Analysis Methods:
The performance is verified through an iterative technique using the Contour-FFT, with current distribution and radiation pattern comparisons.
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