Wireless communication has become a standard solution to satisfy the ever-increasing demands of information transfer in our daily life. Furthermore, reconfigurable metasurfaces comprised of multiple tunable unitcells have drawn significant attention due to their superior electromagnetic performance, while the desired electromagnetic response can be controlled by computer. We therefore present a prototype of a wireless communication system based reconfigurable metasurface that works in the microwave frequency range. A 2-D periodical array of a reconfigurable metasurface is loaded with a varactor diode to effectively adjust the in-band transmission and reflection coefficients that maintain different far-field electromagnetic characteristics. The reconfigurable metasurface does not radiate electromagnetic waves and only carries information by adjusting its reflection and transmission coefficients. With this reconfigurable metasurface, a passive communication method can be realized.

无线通信已成为满足我们日常生活中不断增长的信息传输需求的标准解决方案。此外，由多个可调单位晶胞组成的可重构超颖表面由于其优越的电磁性能而引起了极大的关注，而所需的电磁响应可以由计算机控制。因此，我们提出了一种在微波频率范围内工作的，基于可重构超颖表面的无线通信系统原型。可重构超颖表面的二维周期性阵列装有变容二极管，以有效地调节带内传输和反射系数，从而保持不同的远场电磁特性。可重新配置的超颖表面不辐射电磁波，仅通过调整其反射系数和传输系数来承载信息。利用这种可重构的超表面，可以实现无源通信方法。