Abstract
This letter presents a method for copolarized and cross-polarized radar cross section (RCS) imitation based on an amplitude and phase controlled metasurface. By establishing the quantitative relationship between the polarization scattering matrix and the metasurface's reflection coefficients, anL-shaped patch element is designed to achieve quasi-continuous amplitude control and 1-bit phase switching for both polarization channels, by rotating the element within 0°-45° and 90°-135° ranges. A genetic algorithm is employed to optimize the amplitude and phase distributions of the metasurface to imitate the co- and cross-polarized RCS of targets. Experimental results of three 16 × 16-element prototypes demonstrate that imitation errors remain around 1.5 dB within the experimentally validated range of 9.5 GHz to 10.5 GHz and elevation angles within 16°. The results validate the effectiveness of the proposed approach for polarimetric RCS imitation in the joint frequency-angle domain..
| Original language | English |
|---|---|
| Pages (from-to) | 3068-3072 |
| Number of pages | 5 |
| Journal | IEEE Antennas and Wireless Propagation Letters |
| Volume | 25 |
| Issue number | 7 |
| DOIs | |
| Publication status | Published - 1 Jul 2026 |
Keywords
- Copolarization and cross-polarization
- metasurface
- polarization scattering matrix (PSM)
- radar cross section (RCS) imitation
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