用于实现磁特性控制的无源时变波形选择超表面
Passive Time-Varying Waveform-Selective Metasurfaces for Attainment of Magnetic Property Control
AI总结：
本文提出一种无源时变波形选择超表面，通过引入电路加载层产生人工磁偶极矩，在相同频率下利用脉冲宽度变化实现对磁特性的控制，并经数值与实验验证。
摘要：
我们提出了一种加载电路的被动式超表面，即使在相同频率下，也能根据入射波形（特别是其脉冲宽度）表现出不同的响应。重要的是，迄今为止报道的时变波形选择超表面大多只能改变其电特性，而无法改变其磁特性；这严重限制了相应波阻抗和折射率的设计范围，从而阻碍了在天线、传感器、成像器、信号处理和无线通信等潜在应用方面的发展。在本研究中，我们发现无源时变波形选择超表面可以通过引入额外的电路加载层来产生人工磁偶极矩，从而实现磁特性控制；该磁矩仅在时域中设计好的脉冲持续时间内出现。我们提出的概念和结构通过数值仿真和实验得到了验证；因此，我们的结果可用于通过改变脉冲宽度作为额外的自由度，来解决共享相同频率分量的电磁及相关问题。
英文摘要：
We present circuit-loaded metasurfaces that behave differently in a passive manner even at the same frequency in accordance with the incoming waveform, specifically, its pulse width. Importantly, the time-varying waveform-selective metasurfaces reported thus far were mostly able to change their electric properties but not their magnetic properties; this severely limited the design range of their corresponding wave impedances and refractive indices and thus hindered the development of potential applications in antennas, sensors, imagers, signal processing, and wireless communications. In this study, passive time-varying waveform-selective metasurfaces were found to attain magnetic property control by introducing an additional circuit-loaded layer that generated an artificial magnetic dipole moment; this magnetic moment only occurred during the designed pulse duration in the time domain. Our proposed concept and structures were validated numerically and experimentally; thus, our results could be used to address electromagnetic and related issues sharing the same frequency component via the variation of the pulse width as an additional degree of freedom.
机构、总结、中文摘要均由AI分析而来，可能存在错误，请以论文正文为准。
