Low-Cost, Low-Profile Wide-Band Radar Cross Section Reduction Using Dual-Concentric Phase Gradient Modulated Surface

Design criteria of low-cost, dual-concentric metasurface possessing wideband phase gradient (PG) are introduced. The radar cross-section reduction (RCSR) is explained by anomalous reflection that characterizes the superficial planar. geometry consists two single band RCSR modulated surfaces (MSs) triggered in each other. Each MS built-up square patch (SP) unit cells configured as a modulation structure to realize PG causes and monostatic behavior. Applying sinusoidal sequence SP leads formation along surface hence intensity reflected wave reduced for broadside direction (?r=0?). proposed fabricated on 0.8 mm thin FR-4 substrate extends over 249 × mm2. It achieves wide bandwidth from 20.9 GHz 45.7 (i.e., relative 75%) designed Dassault Systèmes (CST) Microwave Studio full-wave simulator confirmed measurement results.