In this letter, a switchable frequency selective surface is designed that can operate between rasorber and absorber having a wide passband characteristics. The structure has an extra advantage of being built on a single dielectric layer having lossy and lossless layer on the two opposite sides. The lossy layer comprises of lumped resistors, which assists in wideband absorption from 4.8 to 15 GHz. PIN diodes are mounted in the lossless layer to equip the structure with rasorber/absorber operation. Under the rasorber operation, a wide transmission bandwidth in between the absorption band from 9 to 11 GHz is obtained. The system is also simplified with the help of an equivalent circuit model. The structure is carefully designed so that it is immuned to polarization and angle sensitivity. Finally, the prototype is fabricated and measured, and the results are found to be in good agreement with the simulated ones. The proposed design is expected to find its application in all airborne technologies.

中文翻译：

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用于机载应用的平面频率选择性表面可切换吸收器/吸收器


在这封信中，设计了可切换频率选择表面，其可以在具有宽通带特性的吸收器和吸收器之间操作。该结构的另一个优点是构建在单个介电层上，在两个相对侧上具有有损层和无损层。有损层由集总电阻器组成，有助于 4.8 至 15 GHz 的宽带吸收。 PIN 二极管安装在无损层中，为该结构配备吸收器/吸收器操作。在吸收器操作下，获得了 9 至 11 GHz 吸收带之间的宽传输带宽。该系统还借助等效电路模型进行了简化。该结构经过精心设计，不受偏振和角度敏感性的影响。最后制作了样机并进行了测量，结果与仿真结果吻合较好。所提出的设计预计将在所有机载技术中得到应用。