设计了一种加载集总电阻的单极化低频透射吸波型频率选择表面(absorptive frequency selective surface,AFSS).该结构由二维有耗频率选择表面(FSS)阻抗屏和三维带阻FSS级联组成.利用集总电阻加载的容性FSS和高选择性的三维宽阻带FSS实...设计了一种加载集总电阻的单极化低频透射吸波型频率选择表面(absorptive frequency selective surface,AFSS).该结构由二维有耗频率选择表面(FSS)阻抗屏和三维带阻FSS级联组成.利用集总电阻加载的容性FSS和高选择性的三维宽阻带FSS实现了超宽带通响应以及低剖面、高选择性特性.仿真结果显示设计的吸波型频率选择表面通带为1—3.5 GHz,吸波频段为6.6—11.6 GHz,通带与吸波频段的过渡带比为1.9.最后制作实物进行了实验验证,测试结果与仿真基本一致,充分验证了设计的有效性和正确性.展开更多
By applying meander-line for electrical loss and magnetic material for magnetic loss,we present a metamaterial absorber which is wide-spaced and dual-band(1.35—2.24 GHz and 10.37—12.37 GHz).The novelty of this study...By applying meander-line for electrical loss and magnetic material for magnetic loss,we present a metamaterial absorber which is wide-spaced and dual-band(1.35—2.24 GHz and 10.37—12.37 GHz).The novelty of this study mainly lies in a combination of two kinds of losses to consume electromagnetic energy,which can get better dual-band absorption.In the electrical loss layer,meander-line structures are printed on both surfaces of the substrate and the structure series with resistors.Considering the need for miniaturization,we connect eight metallic vias with these meander-line areas to form a compact 2.5-dimensional(2.5D)structure.The dimension of the unit cell is miniaturized to be 5.94 mm×5.94 mm,about 0.035λat the center frequency of the lower absorption band.In the magnetic loss layer,the 0.4 mm thick magnetic material is employed on a metallic ground plane.In addition,the complex permittivity and complex permeability of the magnetic material are given.Finally,we fabricate a prototype of the proposed absorber and obtain a measurement result which is in good agreement with the full-wave simulation result.展开更多
文摘By applying meander-line for electrical loss and magnetic material for magnetic loss,we present a metamaterial absorber which is wide-spaced and dual-band(1.35—2.24 GHz and 10.37—12.37 GHz).The novelty of this study mainly lies in a combination of two kinds of losses to consume electromagnetic energy,which can get better dual-band absorption.In the electrical loss layer,meander-line structures are printed on both surfaces of the substrate and the structure series with resistors.Considering the need for miniaturization,we connect eight metallic vias with these meander-line areas to form a compact 2.5-dimensional(2.5D)structure.The dimension of the unit cell is miniaturized to be 5.94 mm×5.94 mm,about 0.035λat the center frequency of the lower absorption band.In the magnetic loss layer,the 0.4 mm thick magnetic material is employed on a metallic ground plane.In addition,the complex permittivity and complex permeability of the magnetic material are given.Finally,we fabricate a prototype of the proposed absorber and obtain a measurement result which is in good agreement with the full-wave simulation result.
