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首页> 外文期刊>International journal of RF and microwave computer-aided engineering >A triple-layer dual-bandpass frequency selective surface of third order response with equivalent circuit analysis
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A triple-layer dual-bandpass frequency selective surface of third order response with equivalent circuit analysis

机译：具有等效电路分析的三阶三层双带通频率选择表面

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摘要

A multilayered cascaded and polarization-dependent frequency selectivesurface (FSS) exhibiting dual bandpass frequency response is proposed in thisarticle. The FSS is composed of two metal-based square patch layers in the twoends and one aperture type layer in the middle, separated by two dielectricsubstrates. The FSS exhibits bandpass response of third order with two transmissionpoles in the 5-6 GHz band and one pole at 2.5 GHz. The passbands areseparated well enough with a transmission zero at 3.5 GHz leading to significantout-of-band rejection. The structure is ultrathin with the thickness on the order of0.01λ_0 with respect to the lowest resonating frequency. It is shown with parametricstudies how the poles can be tuned individually. Principle of operation of theFSS is explained with its equivalent circuit model. Transmission phase of the FSSvaries linearly with frequency in the upper band. Simulation result is verifiedexperimentally for the fabricated prototype.
机译：本文提出了一种具有双带通频率响应的多层级联且偏振相关的频率选择性表面（FSS）。 FSS由两端的两个基于金属的方形贴片层和中间的一个开口型层组成，由两个介电基板隔开。 FSS表现出三阶带通响应，在5-6 GHz频带中有两个传输极，在2.5 GHz时有一个极。通带之间的分离足够好，在3.5 GHz处的传输为零，从而导致明显的带外抑制。该结构是超薄的，相对于最低的谐振频率，其厚度约为0.01λ_0。参数研究显示了如何分别调整磁极。用等效电路模型解释了FSS的工作原理。 FSS的传输相位随上频带中的频率线性变化。仿真结果验证了所制造原型的有效性。

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