Multispectral Wideband Microwave Meta-absorber with Optically Transparency and Infrared Camouflage

Radar reflective cross section (RCS) is an important parameter for radar detection of combat aircraft, and the cockpit is one of the three major sources of electromagnetic scattering from combat aircraft. Current military detection equipment is dominated by multi-band coverage, and stealth technology is developing in the direction of intelligence and composite. To solve the problem of radar-infrared stealth compatibility of the cockpit cover, the compatibility stealth composite layer is constructed with indium tin oxide (ITO) and polyethylene terephthalate (PET) as the main material system, and electromagnetic simulation is carried out to optimize the structural parameters and to analyze the wave-absorbing mechanism by commercial electromagnetic software CST Microwave Studio. The designed stealth-compatible functional layer has an absorption rate of more than 90% in the bandwidth of 10 GHz–33 GHz and an infrared emissivity of only 0.352. What’s more, it has the performance of optically transparency, which can be used in airplane cabin cover.