Multi‐Band Tunable Chiral Metamaterial for Asymmetric Transmission and Absorption of Linearly Polarized Electromagnetic Waves,Advanced Theory and Simulations

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Multi‐Band Tunable Chiral Metamaterial for Asymmetric Transmission and Absorption of Linearly Polarized Electromagnetic Waves
Advanced Theory and Simulations ( IF 2.9 ) Pub Date : 2020-10-11 , DOI: 10.1002/adts.202000179
Chen Xi Huang ₁ , Jing Jing Zhang ₁ , Lin Wu ₂ , Cheng Zhang ₃ , Jin Yang ₁ , Liu Xi Yang ₁ , Jun Chen Ke ₁ , Lin Bai ₁ , Qiang Cheng ₁ , Tie Jun Cui ₁

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Due to the importance of chiral materials in realizing many exotic phenomena, a chiral metamaterial incorporated with active components of PIN diodes for the flexible control of asymmetric transmission (AT) of linearly polarized electromagnetic (EM) waves at microwave frequency is proposed. A transfer‐matrix approach and full‐wave simulations for cascading anisotropic impedance sheets is applied to analyse the physical mechanism of the structure, enabling the device with optimal multi‐band AT effect. The experimental results demonstrate that the robust real‐time controls of polarization conversion and AT effect for the linearly polarized waves can be achieved by altering the applied biasing voltage, giving rise to the tunability in three frequency bands of 9–10.5 GHz, 11–11.8 GHz, and 12.2–12.8 GHz. Furthermore, the tunable absorption can also be achieved, making it a good candidate in intelligent EM systems.

中文翻译：

多波段可调谐手性超材料，用于线性极化电磁波的不对称传输和吸收

由于手性材料在实现许多奇异现象中的重要性，因此提出了一种手性超材料，该材料与PIN二极管的有源组件相结合，可以灵活地控制微波频率下线性极化电磁（EM）波的不对称传输（AT）。级联各向异性阻抗片的传递矩阵方法和全波仿真被用于分析结构的物理机制，使器件具有最佳的多频带AT效应。实验结果表明，可以通过改变施加的偏置电压来实现对线性极化波的极化转换和AT效应的强大实时控制，从而在9–10.5 GHz，11–11.8的三个频带中产生了可调谐性GHz和12.2–12.8 GHz。此外，

更新日期：2020-12-07

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