Modulating dielectric loss of mesoporous carbon fibers with radar cross section reduction performance via computer simulation technology

摘要

Mesoporous carbon fibers, a kind of light weight microwave absorbing material, are prepared by electrospinning, through which the pore structure and microwave absorbing properties are influenced by the addition of tetraethyl orthosilicate. In addition, modulating permittivity is achieved by adjusting the pore structure in the range of 2-18 GHz, along with a wide bandwidth of 4.2 GHz at a small thickness of 1.9 mm, the great microwave absorbing performance of which is attributed to the outstanding dipole polarization. More importantly, computer simulation technology (CST) is used to prove the significant radar cross section (RCS) reduction performance. Large RCS values above 10 dB m(2) in the the range of 0 degrees < theta < 30 degrees were achieved. This work paves the way for designing excellent microwave absorbing materials through CST technology.