Flexible Liquid-Metal-Tuned Higher-Order Bandpass Frequency Selective Surfaces
Flexible Liquid-Metal-Tuned Higher-Order Bandpass Frequency Selective Surfaces
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DOI：
10.1109/apmc47863.2020.9331351
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发表时间：
2020-12
期刊：
影响因子：
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通讯作者：
Kevin Xu;Jun H. Choi
中科院分区：
文献类型：
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作者：
Kevin Xu;Jun H. Choi
本文提出了一种新的液体金属调谐高阶带通频率选择表面（FSS）的实现。所提出的多层周期性结构基于由厚度控制孔径耦合夹层分隔的谐振FSS层组成的拓扑结构。这些液态金属层与弹性体衬底结合使用，以实现机械柔性和流体可调的装置。电容调谐块集成到谐振FSS层中，以实现带通滤波器的工作频率范围的实时调谐。为了演示所提出的高阶液体金属调谐空间滤波器，使用全波电磁仿真设计并验证了工作在Ku波段的二阶和三阶带通FSS。
This paper presents a new implementation of liquid-metal-tuned higher-order bandpass frequency selective surfaces (FSSs). The proposed multi-layer periodic structures are based upon a topology consisting of resonant FSS layers separated by thickness-controlling aperture coupling interlayers. These liquid metal layers are used in combination with an elastomeric substrate to realize a mechanically flexible and fluidically tunable device. Capacitive tuning slugs are integrated into the resonant FSS layers to enable real-time tuning of the bandpass filter’s operating frequency range. To demonstrate the proposed higher-order liquid-metal-tuned spatial filters, both second-order and third-order bandpass FSSs, operating in the Ku-band, are designed and validated using full-wave electromagnetic simulation.