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首页> 外文期刊>Microwaves, Antennas & Propagation, IET >Chiral frequency selective surfaces comprised of multiple conducting strips per unit cell
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Chiral frequency selective surfaces comprised of multiple conducting strips per unit cell

机译：手性频率选择表面，每个晶胞包含多个导电条

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摘要

The periodic structure based on an array of multiple conducting strips per unit cell on a chiral slab is investigated in this letter. Instead of a single strip, a unit cell is constructed by equal and unequal lengths of double or triple strips. In this case, the array is periodic, as opposed to the traditional individual elements. The co-polarised reflectance, co-polarised transmittance and cross-polarised transmittance of new types of frequency selective surfaces (FSS) comprised of perfectly conducting double or triple strips on a chiral slab are analysed theoretically for a plane wave at normal incidence. The analysis is based on the modal expansions and moment methods together with the Floquet theorem. The unknown current coefficients induced on the conducting elements are computed by using the subdomain overlapping piecewise sinusoidal basis functions. By using two or three conducting strips per unit cell, FSS can be operated in different frequency bands. The double and triple strips per unit cell on chiral slab produce double and triple resonances, respectively. The structure can be used in band-stop filter, multiband antenna applications and subreflector systems as well as the polarisation rotator. The computed result of free-standing strip FSS is compatible with the measured and calculated results in literature.
机译：本文研究了一种基于手性平板上每个晶胞由多个导电带组成的阵列的周期性结构。代替单个条带，单位单元由相等或不等长的双重或三重条带构成。在这种情况下，与传统的单个元素相反，阵列是周期性的。从理论上分析了垂直入射时平面波的新型频率选择表面（FSS）的同极化反射率，同极化透射率和交叉极化透射率，这些表面由手性平板上的完美导电双或三重条组成。该分析基于模态展开和矩量法以及Floquet定理。通过使用子域重叠的分段正弦基函数来计算在导电元件上感应的未知电流系数。通过在每个单位单元中使用两个或三个导电条，FSS可以在不同的频带中运行。手性平板上每单位细胞的双和三重条分别产生双和三重共振。该结构可用于带阻滤波器，多频带天线应用和子反射器系统以及偏振旋转器。独立式钢带FSS的计算结果与文献中的测量和计算结果兼容。

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  • 来源
    《Microwaves, Antennas & Propagation, IET》 |2014年第9期|621-626|共6页
  • 作者

    Delihacioglu K.;

  • 作者单位

    Electrical and Electronics Engineering Department, Kilis 7 Aral??k University, Kilis, Turkey|c|;

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