Abstract
Two novel artificial magnetic conductor (AMC) structures, based on loop patch and substrate, are designed to realize 180° reflection phase difference in a wide frequency band. This paper applies these two AMCs' reflection phase property to redirect the scattered fields of a radar target to reduce its radar cross section (RCS). This method of RCS reduction can be realized by covering with a chessboard surface composed of two AMC structures. Compared with the same-sized metallic surface, this proposed chessboard surface can reduce RCS drastically from 9GHz to 17GHz. Meanwhile, this surface also can be used as antenna by precisely designing feed network. The simulated impedance matching frequency band is from 9.22GHz to 10.3GHz. Such method will open a path for integrated design of antenna and metasurface, so the RCS can be reduced, at the same time the radiation properties can be maintained.
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