In this study, a pattern for an active frequency selective surface (AFSS) applicable to stealth radomes was designed and manufactured. Subsequently, its effectiveness was verified via measurements of its electromagnetic performance, and its mechanical performance was numerically evaluated in an actual flight environment. An AFSS equipped with a PIN diode was designed to have a transmission frequency in the X-band using only one side of a surface. To evaluate the mechanical performance when the designed AFSS was applied to a stealth radome, flow analysis was performed on the basis of the shape of the F-35 combat aircraft. Moreover, structural analysis of the stealth radome was performed using the pressure distribution at the maximum velocity of the F-35, as determined via the flow analysis. On the basis of the structural analysis results, the mechanical performance of the designed stealth radome was evaluated via analysis of the stress distribution of the AFSS diode. Through this study, an AFSS pattern applicable to stealth radomes was proposed, and its mechanical/electromagnetic performance was evaluated to verify the feasibility of stealth radomes incorporated with AFSSs.

在这项研究中，设计并制造了适用于隐形雷达罩的有源频率选择性表面（AFSS）的图案。随后，通过测量其电磁性能验证了其有效性，并在实际飞行环境中对其机械性能进行了数值评估。配备PIN二极管的AFSS被设计为仅在表面的一侧在X波段具有传输频率。为了评估将设计的AFSS应用于隐形天线罩时的机械性能，根据F-35战斗机的形状进行了流量分析。此外，隐身天线罩的结构分析是使用F-35的最大速度下的压力分布进行的，这是通过流动分析确定的。根据结构分析结果，通过分析AFSS二极管的应力分布来评估设计的隐形天线罩的机械性能。通过这项研究，提出了适用于隐形雷达罩的AFSS模式，并对其机械/电磁性能进行了评估，以验证与AFSS结合使用的隐形雷达罩的可行性。