Wideband Radar Cross-Section Reduction of a Stacked Patch Array Antenna Using Metasurface


In this letter, a two-layer metasurface is proposed to achieve radar cross-section (RCS) reduction of a stacked patch antenna at a broadband. The lower layer metasurface is composed of four sq. patches loaded with four resistors, that is utilised to reduce RCS within the operation band (two.seventy five-3.four GHz) of the patch antenna. The periodic square loops with four resistors mounted on every facet are adopted to construct the upper layer metasurface for absorbing the incoming wave out of band. We have a tendency to first investigate the effectiveness of the proposed metasurface on the RCS reduction of the one stacked patch and then apply this strategy to the one ×4 stacked patch array. The proposed low RCS stacked patch array antenna is fabricated and measured. The experimental results show that the designed metasurface makes the antenna RCS dramatically reduced during a broadband covering the operation band and out-of-band from 5.five-16 GHz. Moreover, the introduction of metasurface is demonstrated to have little influence on the antenna performance.

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