期刊
ADVANCED COMPOSITE MATERIALS
卷 20, 期 3, 页码 215-229出版社
VSP BV
DOI: 10.1163/092430410X539299
关键词
Fiber-reinforced composites; radar absorbing structures; conducting polymer; circuit analog absorber; radar cross-section
资金
- Defense Acquisition Program Administration and Agency for Defense Development [UD070041AD]
- Korea Ministry of Knowledge Economy (MKE) [2008-N-WD08-P-02]
This paper presents a low observable structure with curved surfaces made by fiber-reinforced composites, conducting polymers and shows the possibility of developing stealth platforms for military applications. We propose radar absorbing structures (RAS) based on a circuit analog absorber in order to reduce the radar cross-section (RCS) of an object with curved surfaces. First, semi-cylindrical RAS with a periodic square patterned layer using a conducting polymer was designed and simulated by a commercial 3-D electromagnetic field analysis program. The designed semi-cylindrical structure with low RCS was then fabricated using fiber-reinforced composites and conducting polymer materials. Finally, the radar cross-section was measured in order to evaluate the radar absorbing performance of the fabricated RAS at a compact range facility. The measured radar absorption of the fabricated RAS showed that the target's RCS declined in a range of 65% to 94% within the X-band relative to a non-radar absorbing specimen. (C) Koninklijke Brill NV, Leiden, 2011
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