一种具有高稳定度的新型小型化频率选择表面

A Novel Miniaturized Frequency Selective Surface of High Stability

提出了一种小型化的带阻型频率选择表面(FSS)新单元。这种新单元通过将方环内的部分分为四个对称区域,并在每个区域内增加三角螺旋结构来增加单元的谐振长度,从而实现了FSS单元的小型化。仿真和实测的结果表明,这种FSS的单元长度相比波长节省了近90%,同时对于以不同角度和极化方式入射的波具有极好的稳定性,适合在实际有限空间内应用。

A novel element for band-stop miniaturized frequency selective surface is presented.In this element the area in the rectangle ring is split into four symmetry parts,and in each part by adding up triangle-based spiral elements the resonant length of the element is lengthened,which contributes to miniaturization of unit cell＇s dimension.Both simulation and experiments are carried out.Both results demonstrate that the length of the unit cell of the proposed FSS is only about 10% of the corresponding wavelength,and the miniaturization performances are of excellent stability with respect to waves of different polarizations and incident angles,which ensures the FSS＇s practicability in limit space.