论文标题
使用带有动态极化控制的分阶段阵列的近场聚焦
Near-field focusing using phased arrays with dynamic polarization control
论文作者
论文摘要
近场通信中的分阶段阵列使发射器可以将无线信号聚焦在接收器周围的小区域。通过仔细调整相移和从段阵列传输的信号的极化来实现适当的焦点。在本文中，我们研究了极化对近场聚焦的影响，并在这种情况下研究了动态极化控制（DPC）阶段阵列的使用。我们的研究表明，近场聚焦的最佳极化构型在天线阵列上的空间变化。这种空间变化激发了对DPC分阶段阵列的需求，该阵列允许在不同天线之间进行独立的极化控制。我们使用模拟显示，与传统的开关或双极化相比，近场中的DPC分阶段阵列达到了更高的接收信噪比。
Phased arrays in near-field communication allow the transmitter to focus wireless signals in a small region around the receiver. Proper focusing is achieved by carefully tuning the phase shifts and the polarization of the signals transmitted from the phased array. In this paper, we study the impact of polarization on near-field focusing and investigate the use of dynamic polarization control (DPC) phased arrays in this context. Our studies indicate that the optimal polarization configuration for near-field focusing varies spatially across the antenna array. Such a spatial variation motivates the need for DPC phased arrays which allow independent polarization control across different antennas. We show using simulations that DPC phased arrays in the near-field achieve a higher received signal-to-noise ratio than conventional switched- or dual-polarization phased arrays.
