论文标题
时空培养基充当完美的天线混合器 - 放大器收发器
Space-Time Medium Functions as a Perfect Antenna-Mixer-Amplifier Transceiver
论文作者
论文摘要
我们表明，时空变化的培养基可以充当前端收发器，即天线混合体示波器。这种独特的功能由与复杂的时空波向量相关的时空表面波赋予了跨膜时空介质。提出的结构引入了纯频率上下转换，并且具有非常弱的不希望的时间谐波。与最近提出的时空混合器相比，与增益相关的大频上/下转换率是可以实现的。此外，由于该结构无法基于时空调制和入射波之间的渐进式能量转变，因此它具有次波长厚度（Metasurface）。这种多功能，高效和紧凑的培养基有望在现代无线电信系统中找到各种应用。
We show that a space-time-varying medium can function as a front-end transceiver, i.e., an antenna-mixer-amplifier. Such a unique functionality is endowed by space-time surface waves associated with complex space-time wave vectors in a subluminal space-time medium. The proposed structure introduces pure frequency up- and down-conversions and with very weak undesired time harmonics. In contrast to other recently proposed space-time mixers, a large frequency up-/down conversion ratio, associated with gain is achievable. Furthermore, as the structure does not operate based on progressive energy transition between the space-time modulation and the incident wave, it possesses a subwavelength thickness (metasurface). Such a multi-functional, highly efficient and compact medium is expected to find various applications in modern wireless telecommunication systems.
