Design of Engineered Reflectors for Radar Cross Section Modification

作者：Doumanis E^*; Goussetis G; Papageorgiou G; Fusco V; Cahill R; Linton D

来源：IEEE Transactions on Antennas and Propagation, 2013, 61(1): 232-239.

DOI：10.1109/TAP.2012.2220097

• Frequency selective surface (FSS)
• high impedance surface
• radar cross section (RCS)
• reflect-array

A technique is proposed for the design of engineered reflectors consisting of doubly periodic arrays printed on thin grounded dielectric substrates that reflect an incoming wave from a given incoming direction to a predetermined outgoing direction. The proposed technique is based on a combination of Floquet theory for propagation in periodic structures and reflect-array principles. A flat surface designed to reflect a TE polarized wave incident at 45 degrees back in the direction of the impinging signal at 14.7 GHz is employed as an example. By means of full-wave simulations, it is demonstrated that the monostatic RCS of a finite reflector is comparable with the specular RCS of a metallic mirror of the same dimensions. It is further shown that comparably high monostatic RCS values are obtained for angles of incidence in the 30 degrees-60 degrees range, which are frequency dependent and thus open opportunities for target localization. A prototype array is fabricated and experimentally tested for validation. The proposed solution can be used to modify the radar cross section of a target. Other potential applications are also discussed.

• 出版日期2013-1