Title :
A Broadband Radar Absorber Based on Perforated Magnetic Polymer Composites Embedded With FSS
Author :
Linbo Zhang ; Peiheng Zhou ; Huibin Zhang ; Lijuan Lu ; Guorui Zhang ; Haiyan Chen ; Haipeng Lu ; Jianliang Xie ; Longjiang Deng
Author_Institution :
State Key Lab. of Electron. Thin Film & Integrated Devices, Univ. of Electron. Sci. & Technol. of China, Chengdu, China
Abstract :
This paper presents a design method of broadband radar absorber (RA) combining together the features of frequency selective surfaces (FSSs), subwavelength hole array, and magnetic absorbing sheets. The absorber is constructed of a periodic array of square conducting patches embedded into a magnetic absorbing substrate perforated with circular hole arrays and backed by a metal ground. The absorption characteristics of the magnetic absorbing substrate are tuned and improved by means of perforating holes and embedding FSSs. After optimizing the dimensions of the holes and FSSs, the RA with a thickness of 2.4 mm achieves a reflection coefficient less than -10 dB from 6.3 to 17.3 GHz, which is nearly 3.6 times the bandwidth of the magnetic absorbing substrate. Meanwhile, the weight of the RA decreases by 15% due to the hole perforation, and the reflection coefficient is insensitive to incident angle from 0° to 30° for both TE and TM polarizations.
Keywords :
antenna arrays; frequency selective surfaces; radar absorbing materials; FSS; TE polarization; TM polarization; broadband radar absorber; circular hole array; frequency selective surfaces; magnetic absorbing sheets; perforated magnetic polymer composites; periodic array; subwavelength hole array; Absorption; Bandwidth; Broadband communication; Magnetic resonance; Magnetic resonance imaging; Reflection coefficient; Broadband; frequency selective surfaces (FSSs); hole array; magnetic absorber; reflection coefficient;
Journal_Title :
Magnetics, IEEE Transactions on
DOI :
10.1109/TMAG.2013.2293129
