论文标题
脉搏驱动的自我恢复的元元素
Pulse-Driven Self-Reconfigurable Meta-Antennas
论文作者
论文摘要
由于软件和硬件的最新发展，无线通信和感知已显着提高。尽管已经提出了各种调制方案来通过利用几个自由度来有效使用有限的频率资源，但天线性能基本上仅受频率的控制。在这里，我们提出了一种基于元信息的新天线设计概念，以响应电磁脉冲的时间宽度来操纵天线性能。我们在数值上和实验上表明，通过使用一组充满集团电路的空间布置的跨侧，可以通过入射脉冲宽度来重新配置普通的全向天线，以表现出数百万种或数十亿个循环的定向特性，超出了传统性能。我们证明，提出的概念可以用于同时入射和相互通信下的感测，选择性接收，作为基于脉冲宽度扩展现有频率资源的第一步。
Wireless communications and sensing have notably advanced thanks to the recent developments in both software and hardware. Although various modulation schemes have been proposed to efficiently use the limited frequency resources by exploiting several degrees of freedom, antenna performance is essentially governed by frequency only. Here, we present a new antenna design concept based on metasurfaces to manipulate antenna performances in response to the time width of electromagnetic pulses. We numerically and experimentally show that by using a proper set of spatially arranged metasurfaces loaded with lumped circuits, ordinary omnidirectional antennas can be reconfigured by the incident pulse width to exhibit directional characteristics varying over hundreds of milliseconds or billions of cycles, far beyond conventional performance. We demonstrate that the proposed concept can be applied for sensing, selective reception under simultaneous incidence and mutual communications as the first step to expand existing frequency resources based on pulse width.
