Breaking the High-Frequency Limit and Bandwidth Expansion for Radar Cross-Section Reduction: A low-observable technology
Jianxun Su, Hang Yu, Hongcheng Yin, Qingxin Guo, Zhihe Xiao, Zengrui Li
Abstract
This article investigates the bandwidth limit of radar cross-section (RCS) reduction (RCSR) and proposes a new strategy for realizing multiband and ultrawideband RCSR. The high-frequency bound is broken while guaranteeing the stability of the low frequency and is extended to the grating-lobe appearance region. The short circuit blind zone of RCSR was first discovered in structures, such as the metasurface, frequency-selective surface (FSS), artificial magnetic conductor (AMC), and electromagnetic (EM) bandgap (EBG), through analyzing the equivalent circuit model and the reflection phase of the unit cell.
Topics & Concepts
Radar cross-sectionBandwidth (computing)ConductorRadarPerfect conductorPhysicsGratingLimit (mathematics)OpticsEquivalent circuitElectromagnetic interferenceEngineeringElectronic engineeringElectrical engineeringMaterials scienceTelecommunicationsScatteringMathematical analysisMathematicsVoltageComposite materialAdvanced Antenna and Metasurface TechnologiesAntenna Design and AnalysisMetamaterials and Metasurfaces Applications