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The use of a phase-switched screen (PSS) boundary to control the radar cross-section (RCS) of a spiral patch antenna is investigated. A theoretical analysis based on a transmission line analogue is used to examine the concept and to provide basic design criteria. The design of an experimental system that includes a novel dual polarised active PSS boundary is described. Measured results are presented, which show that the demonstrator system provides active RCS control between 11 GHz and 13 GHz.
Date of Publication: 5 Aug. 2005