Electromagnetic Design Method of Radomes Under High-Temperature Environment

The electromagnetic (EM) performance of radomes on high-speed flight vehicles is significantly degraded by the aerothermal heating load. To address this problem, a theoretical methodology has been developed for the design of radomes that are capable of performing superior EM performance at both ambient and high temperatures. Drawing on the idea of multidesign point approach, the proposed design method is devised by integrating the thermal effect, including structural deformation and change of material parameters, into the methodology. The samples of 2-D planar radomes were fabricated, and the applicability of the proposed method was verified from both simulated and experimental perspectives. Furthermore, a 3-D tangent oval radome was designed using the proposed method. The results indicate that the designed radome structure is capable of maintaining both the gain and boresight error (BSE) of the antenna-radome system at desirable levels at both ambient and high temperatures.