一种Ku频段弯折结构小型化频率选择表面

A Ku-band Miniaturized Frequency Selective Surface with Meander Structure

针对当前微波系统对小型化频率选择表面的需求,提出了一种基于弯折结构的小型化频率选择表面,通过将三极子和末端圆弧组合的方式实现尺寸的缩减。对设计的结构进行了仿真设计与加工测试,实验结果表明,其谐振频率为13.06 GHz,呈现带通特性,单元尺寸为谐振波长的0.16倍,-10 dB带宽为0.159 GHz,并且具有良好的入射角度稳定性。所采用的这种弯折单元结构的设计方法可以在其他小型化频率选择表面结构中应用。

Frequency selective surface(FSS)has been widely used in microwave system due to its good frequency selective function.In view of the requirement of microwave system for miniaturized FSS,a miniaturized FSS based on a meander structure is proposed.The size of FSS is reduced by combining the tripole and the end arc.The designed structure is simulated and fabricated.The experimental results show that the resonant frequency of the prepared FSS is 13.06 GHz,indicating that it has bandpass characteristics.The unit size is 0.16 times the resonant wavelength.The-10 dB bandwidth is 0.159 GHz.The proposed FSS shows good incident angle stability.The proposed design method based on the structure can be used in other miniaturized FSS.