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Design of low-radar cross section microstrip antenna based on metamaterial absorber

Yang Huan-Huan Cao Xiang-Yu Gao Jun Liu Tao Ma Jia-Jun Yao Xu Li Wen-Qiang

Design of low-radar cross section microstrip antenna based on metamaterial absorber

Yang Huan-Huan, Cao Xiang-Yu, Gao Jun, Liu Tao, Ma Jia-Jun, Yao Xu, Li Wen-Qiang
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  • Abstract views:  1655
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Publishing process
  • Received Date:  19 July 2012
  • Accepted Date:  22 October 2012
  • Published Online:  05 March 2013

Design of low-radar cross section microstrip antenna based on metamaterial absorber

  • 1. Information and Navigation Institute of Air Force Engineering University, Xi’an 710077, China
Fund Project:  Project supported by the National Natural Science Foundation of China (Grant Nos. 60671001, 61271100), the Key Program of Natural Science Basic Research of Shaanxi Province, China (Grant No. 2010JZ010), the Natural Science Basic Research of Shaanxi Province, China (Grant Nos. SJ08-ZT06, 2012JM8003).

Abstract: A metamaterial absorber with high absorptivity, wide incident angle and no surface ullage layer is designed and applied to microstrip antenna to reduce its radar cross section (RCS). The results show that the absorber can exhibit an absorption of 99.9% with a thickness of 0.3 mm. Compared with the conventional microstrip antenna, the proposed antenna has an RCS reduction of more than 3 dB in the boresight direction in the working frequency band, and the largest reduction can reach 16.7 dB, the monostatic and bistatic RCS reduction are over 3 dB from -30° to +30° and -90° to +90° respectively, while the radiation performance is kept, which proves that the absorber has an excellent absorptivity and could be applied to microstrip antennas to achieve in-band stealth.

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