A Study on the Effective Permittivity of Carbon/PI Honeycomb Composites for Radar Absorbing Design

作者：Zhou, Peiheng^*; Huang, Liru; Xie, Jianliang; Liang, Difei; Lu, Haipeng; Deng, Longjiang

来源：IEEE Transactions on Antennas and Propagation, 2012, 60(8): 3679-3683.

DOI：10.1109/TAP.2012.2201120

• Coated honeycomb
• effective permittivity
• radar absorbing structure
• reflection coefficient

Radar absorbing honeycomb composites with different coating thicknesses are prepared by impregnation of aramid paper frame with solutions containing conductive carbon blacks (non-magnetic) and PI (polyimide). Expressions for the effective permittivity of the composites are studied and validated both in theory and experiment. It is found that a theoretical equivalent panel with given permittivity can be obtained to represent the honeycomb structure in the quasistatic approximation, which provides a feasible way to optimize the design of radar absorbing honeycomb structure by connecting the effective electromagnetic parameters with the unit cell dimensions. The effective permittivity is measured by a network analyzer system in the frequency range of 8-12 GHz and compared with the theoretical result.

• 出版日期2012-8
• 单位电子科技大学