论文标题
寄生元件时间调制,以增强有效的互联偶联:利用率以改善增益宽度
Parasitic Element Time-Modulation for Enhanced Effective Inter-Antenna Coupling: Utilization for Improved Gain-Bandwidth
论文作者
论文摘要
最近将时间变化作为波浪工程的额外自由度引入,这使得超越了线性时间不变(LTI)系统所期望的性能。在本文中,我们使用附加时间变化的散点子(寄生元素)介绍了天线间接时间调节的概念,该散射器(寄生元件)通过机源波系统产生了固有的反馈机制。与直接调制系统与其他元素接触的直接调制系统,在间接时间调制方案\ emph {no}原始LTI网络与时间变化的附加散射器之间的直接物理接触中,则需要在设计中提供额外的灵活性。使用间接时间调制,我们证明了远程天线元件之间的有效耦合增强,并且可能超过相同天线结构但没有时间调整的增益式宽度的可能性。
Time variation has been recently introduced as an additional degree of freedom for wave engineering, that enables going beyond the performances that are expected by linear time-invariant (LTI) systems. In this paper, we introduce the concept of indirect time-modulation of antennas using an add-on time-varying scatterer (parasitic element) that gives rise to an inherent feedback mechanism via the airborne wave system. As opposed to a direct modulated system where a time-dependent element is in contact with the other elements, in an indirect time modulation scheme \emph{no} direct physical contact between the original LTI network and the time-varying add-on scatterer is needed, thus leading to additional flexibility in the design. Using indirect time modulation we demonstrate enhanced effective coupling between remote antenna elements, and the possibility to outperform the gain-bandwidth achieved for the same antenna structure but without time-modulation.