论文标题
波形在相同频率下的元表面传感差异，功率水平降低
Metasurface Sensing Difference in Waveforms at the Same Frequency with Reduced Power Level
论文作者
论文摘要
我们从数值上演示了一种新型的波形选择性跨表面，该跨表面感知传入波形或脉冲宽度在相同频率下的差异。重要的是，所提出的结构包含精确的整流器电路，与旧类型结构中使用的普通Schottky二极管相比，它们以明显降低的输入功率水平来纠正诱导的电荷，这取决于多个设计参数，但主要取决于操作放大器的增益。结果，即使具有有限的信号强度，与现实的无线信号水平相当的信号强度有限，波形选择性的吸收机制也会出现。此外，与仅在0 dbm左右运行的常规结构相比，所提出的结构表现出显着宽的动态范围。因此，我们的研究为将波形选择性的概念应用于更实用的无线通信领域，以相同的频率控制不同的小信号。
We numerically demonstrate a new type of waveform-selective metasurface that senses the difference in incoming waveforms or pulse widths at the same frequency. Importantly, the proposed structure contains precise rectifier circuits that, compared to ordinary schottky diodes used within old types of structures, rectify induced electric charges at a markedly reduced input power level depending on several design parameters but mostly on the gain of operational amplifiers. As a result, a waveform-selective absorbing mechanism related to this turn-on voltage appears even with a limited signal strength that is comparable to realistic wireless signal levels. In addition, the proposed structure exhibits a noticeably wide dynamic range from -30 to 6 dBm, compared to a conventional structure that operated only around 0 dBm. Thus, our study opens up the door to apply the concept of waveform selectivity to a more practical field of wireless communications to control different small signals at the same frequency.
