Optimal Design for High-Temperature Broadband Radome Wall With Symmetrical Graded Porous Structure

This study focuses on electromagnetic and thermomechanical optimal design for high-temperature broadband radome wall with symmetrical graded porous structure.The positiondependent porosity increases from the two surfaces of the structure to its intermediate layer.Electromagnetic and thermo-mechanical properties of the proposed structure are investigated simultaneously via numerical simulations.Optimal results suggest that the symmetrical porous structure possesses better broadband transmission performance in the 1-100 GHz frequency range, in contrast to a traditional A-sandwich structure.The thermo-mechanical investigation also indicates that the novel structure meets the requirement for hightemperature (up to 1400 • C) applications.