3 years ago

RCS reduction and gain enhancement based on holographic metasurface and PRS

Wen Jiang, Mao Long, , Shuxi Gong
In this study, a high directivity slot-coupled patch antenna with low radar cross section (RCS) property using holographic metasurface (HM) and partially reflecting surface (PRS) is proposed. HM and PRS are printed on the two sides of a substrate, which is placed above the antenna. When an incident wave is illuminated on the HM, transmission wave is transferred into a surface wave, hence the low backscattering coefficient out-of-band and gain-enhancement are obtained. With the help of PRS and the metal plate, a Fabry-Perot resonator cavity is shaped. Not only in-band RCS reduction (RCSR), but also the high directivity of the antenna is obtained. Furthermore, simulated and measured results show remarkable RCSR are obtained ranging from 9 to 22 GHz, the maximum RCSR is 26.7 dB at 17.6 GHz, and the directivity of HM-PRS antenna is improved with the gain enhancement is 4.1 dB.
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