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A thin radar-infrared stealth-compatible structure with reflectivity below 10 dB in the whole radar X wave band and infrared emissivity less than 0.3 in the infrared region of 8μm–14μm is reported.The designed stealth-compatible structure consists of metallic frequency selective surface(MFSS),resistive frequency selective surface(RFSS),and metal backing from the top down,and it is only 2.1-mm thick.The MFSS is made up of some divided low infrared emissivity metal copper films,and the RFSS consists of a capacitive array of square resistive patches.They are placed close together,working as an admittance sheet because of a mutual influence between them,and the equivalent admittance sheet greatly reduces the thickness of the whole structure.The proposed stealth-compatible structure is verified both by simulations and by experimental results.These results indicate that our proposed stealth-compatible structure has potential applications in stealth fields.
A thin radar-infrared stealth-compatible structure with reflectivity below 10 dB in the whole radar X wave band and infrared emissivity less than 0.3 in the infrared region of 8 μm-14 μm is reported. The stealth-compatible structure consists of a metallic frequency selective surface (MFSS), resistive frequency selective surface (RFSS), and metal backing from the top down, and it is only 2.1-mm thick. The MFSS is made up of some divided low infrared emissivity metal copper films, and the RFSS consists of a capacitive array of square resistive patches.They are placed close together, working as an admittance sheet because of mutual influence between them, and the equivalent admittance sheet greatly reduces the thickness of the whole structure. proposed stable-compatible structure is verified both by simulations and by experimental results. The results show that that we proposed stealth-compatible structure has potential applications in stealth fields.