J4 ›› 2012, Vol. 39 ›› Issue (5): 91-95.doi: 10.3969/j.issn.1001-2400.2012.05.016

• Original Articles • Previous Articles     Next Articles

Radar absorbing material applied to the RCS reduction of array antennas

WANG Fuwei;GONG Shuxi;ZHANG Pengfei;HONG Tao;YU Songtao;MA Ji   

  1. (Science and Technology on Antenna and Microwave Lab., Xidian Univ., Xi'an  710071, China)
  • Received:2011-07-18 Online:2012-10-20 Published:2012-12-13
  • Contact: WANG Fuwei E-mail:wfwraul@yahoo.com.cn

Abstract:

The radiation performance of an antenna must be ensured when reducing the antenna radar cross section (RCS), which makes it difficult to control the in-band RCS. For this reason, this paper presents a radar absorbing material (RAM) applied to reduce the in-band RCS of the array antenna. The structure of the RAS is based on the square patch structure loaded with lumped resistances. An array with four patch elements is designed, and the RAM is located between two adjacent patch elements. Simulated and measured results show that the radiation performance of the array antenna is preserved when RAS is used. At the working frequency the RCS of an array antenna with RAM can be reduced more than 9dB by this method.

Key words: array antenna, radar absorbing material, RCS reduction, lumped resistances


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