研究目的
To propose a new design of metasurface based on coding phase gradient metasurface for wideband radar cross section (RCS) reduction.
研究成果
The proposed coding phase gradient metasurface design effectively achieves broadband RCS reduction from 7.5 to 26 GHz, demonstrating the utility of combining genetic algorithms and nonlinear fitting for efficient design optimization. The random arrangement of supercells enhances wave diffusion, contributing to the broadband performance.
研究不足
The design process, while optimized with genetic algorithms and nonlinear fitting, may still require significant computational resources for full-wave simulations. The broadband performance is achieved but may be sensitive to manufacturing tolerances.
1：Experimental Design and Method Selection:
The design utilizes a genetic algorithm and nonlinear fitting method to optimize the unit cell geometry for broadband RCS reduction.
2：Sample Selection and Data Sources:
The unit cell is composed of a Jerusalem structure and a central circular ring, with parameters optimized for a frequency range of
3：5–26 GHz. List of Experimental Equipment and Materials:
The design includes a metallic structure, a dielectric substrate (F4B with relative permittivity of
4：3), and a backed metallic ground. Experimental Procedures and Operational Workflow:
The process involves optimizing geometric parameters to achieve a phase shift of 90° ± 20°, followed by arranging supercells in a random pattern for RCS reduction.
5：Data Analysis Methods:
Full-wave simulations are conducted using CST Microwave Studio to evaluate the RCS reduction performance.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
