Electrically tunable miniaturized band-stop frequency selective surface on engineered substrate with embedded permalloy patterns
Electrically tunable miniaturized band-stop frequency selective surface on engineered substrate with embedded permalloy patterns
复制标题
工程基板上具有嵌入式坡莫合金图案的电可调小型带阻频率选择表面
作者：
Jinqun Ge;Guoan Wang
本文提出了一种微型化、电可调谐的带阻频率选择表面（FSS），其磁介电工程衬底具有较高的电可调谐有效磁导率。透视磁介质衬底采用多层100 nm厚的Permalloy （Py）薄膜嵌套在Roger RT/ durd 5880衬底上，每层Py薄膜层由15μm×20μm Py图案阵列组成，每个Py图案之间有10 μm的间隙，以抑制磁损耗。所提出的衬底的有效磁导率的可调性是通过施加直流电流通过Py图案下的图案金偏压线产生的静态磁场来实现的。对工程基板进行了实现和研究，结果表明，嵌入单层图案化Py的基板的等效磁导率为1.14，可调性为3.3%；嵌入十层图案化Py的基板的等效磁导率为2.398，可调性为15.8%。在实现的工程基板上设计了磁性FSS，以证明其小型化和可调性的有效性。与普通介电基片上的非磁性FSS相比，所设计的FSS尺寸减小了16.02%，工作频率在直流电流下可在2.450GHz ~ 2.672GHz范围内连续调谐。本文提出了一种微型化、电可调谐的带阻频率选择表面（FSS），其磁介电工程衬底具有较高的电可调谐有效磁导率。透视磁介质衬底采用多层100 nm厚的Permalloy （Py）薄膜嵌套在Roger RT/ durd 5880衬底上，每层Py薄膜层由15μm×20μm Py图案阵列组成，每个Py图案之间有10 μm的间隙，以抑制磁损耗。所提出的衬底的有效磁导率的可调性是通过施加直流电流通过Py图案下的图案金偏压线产生的静态磁场来实现的。对工程基板进行了实现和研究，结果表明，嵌入单层图案Py的基板的等效磁导率为1.14，可调性为3.3%；嵌入十层图案Py的基板的等效磁导率提高了。
This paper presents a miniaturized and electrically tunable band-stop frequency selective surface (FSS) with magneto-dielectric engineered substrate which has high and electrically tunable effective permeability. The perspective magneto-dielectric substrate is implemented with multiple layers of 100 nm thick patterned Permalloy (Py) thin film embedded in Roger RT/Duriod 5880 substrate, and each Py thin film layer consists of an array of 15μm×20μm Py patterns with 10 μm gaps among them to suppress the magnetic loss. The tunability of effective permeability for the proposed substrate is achieved by the static magnetic field produced from the applied DC current through the patterned gold bias lines beneath Py patterns. The engineered substrate has been implemented and studied, results show that the substrate embedded with a single layer of patterned Py has an equivalent permeability of 1.14 with tunability of 3.3%, and the substrate embedded with ten layers of patterned Py has an increased equivalent permeability of 2.398 and tunability of 15.8%. A magnetic FSS is designed on the implemented engineered substrate to demonstrate the efficacy of miniaturization and tunability. Compared to non-magnetic FSS on normal dielectric substrate, the size of the designed FSS has been reduced by 16.02%, and the operating frequency of the proposed FSS is continuously tunable from 2.450GHz to 2.672GHz with DC current.This paper presents a miniaturized and electrically tunable band-stop frequency selective surface (FSS) with magneto-dielectric engineered substrate which has high and electrically tunable effective permeability. The perspective magneto-dielectric substrate is implemented with multiple layers of 100 nm thick patterned Permalloy (Py) thin film embedded in Roger RT/Duriod 5880 substrate, and each Py thin film layer consists of an array of 15μm×20μm Py patterns with 10 μm gaps among them to suppress the magnetic loss. The tunability of effective permeability for the proposed substrate is achieved by the static magnetic field produced from the applied DC current through the patterned gold bias lines beneath Py patterns. The engineered substrate has been implemented and studied, results show that the substrate embedded with a single layer of patterned Py has an equivalent permeability of 1.14 with tunability of 3.3%, and the substrate embedded with ten layers of patterned Py has an increased equivalent permeab...