Waveform-Dependent Absorbing Metasurfaces
Waveform-Dependent Absorbing Metasurfaces
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DOI：
10.1103/physrevlett.111.245501
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发表时间：
2013-12-10
影响因子：
8.6
通讯作者：
Sievenpiper, Daniel F.
中科院分区：
文献类型：
--
作者：
Wakatsuchi, Hiroki;Kim, Sanghoon;Sievenpiper, Daniel F.
我们提出了第一次使用的波形相关的吸收超颖表面的高功率脉冲表面电流。这种新型的非线性超颖表面由包括二极管在内的电路元件组成，能够存储高功率脉冲能量，以在脉冲之间耗散能量，同时允许小信号的传播。有趣的是，吸收性能对于高功率脉冲而不是对于高功率连续波（CW）变化，因为所使用的电容器被完全充电。因此，波形依赖性使我们能够区分各种信号类型（即，CW或脉冲），甚至在相同的频率，这可能创造新的微波技术和应用。
We present the first use of a waveform-dependent absorbing metasurface for high-power pulsed surface currents. The new type of nonlinear metasurface, composed of circuit elements including diodes, is capable of storing high-power pulse energy to dissipate it between pulses, while allowing propagation of small signals. Interestingly, the absorbing performance varies for high-power pulses but not for high-power continuous waves (CW's), since the capacitors used are fully charged up. Thus, the waveform dependence enables us to distinguish various signal types (i.e., CW or pulse) even at the same frequency, which potentially creates new kinds of microwave technologies and applications.