Integrating the wireless power transfer (WPT) technology into the wireless communication system has been important for operational cost saving and power-hungry problem solving of electronic devices. In this paper, we propose a resonant beam simultaneous wireless information and power transfer (RB-SWIPT) system, which utilizes a gain medium and two retro-reflecting surfaces to enhance and retro-reflect energy, and allows devices to recharge their batteries and exchange information from the resonant beam wirelessly. To reveal the SWIPT mechanism and evaluate the SWIPT performance, we establish an analytical end-to-end (E\mathscr2E) transmission model based on a modular approach and the electromagnetic field propagation. Then, the intra-cavity power intensity distribution, transmission loss, output power, and E\mathscr2E efficiency can be obtained. The numerical evaluation illustrates that the exemplary RB-SWIPT system can provide about 4.20 W electric power and 12.41 bps/Hz spectral efficiency, and shorter transmission distance or larger retro-reflecting surface size can lead to higher E\mathscr2E efficiency. The RB-SWIPT presents a new way for high-power, long-range WPT, and high-rate communication.

中文翻译：

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使用谐振束进行同步无线信息和电力传输的端到端传输分析


将无线功率传输（WPT）技术集成到无线通信系统中对于节省运营成本和解决电子设备的耗电问题非常重要。在本文中，我们提出了一种谐振束同步无线信息和电力传输（RB-SWIPT）系统，该系统利用增益介质和两个回射表面来增强和回射能量，并允许设备对电池充电和交换能量。无线地从谐振束获取信息。为了揭示 SWIPT 机制并评估 SWIPT 性能，我们建立了基于模块化方法和电磁场传播的分析端到端（E\mathscr2E）传输模型。然后，可以获得腔内功率强度分布、传输损耗、输出功率和E\mathscr2E效率。数值评估表明，示例性RB-SWIPT系统可以提供约4.20W的电功率和12.41bps/Hz的频谱效率，并且更短的传输距离或更大的回射表面尺寸可以导致更高的E\mathscr2E效率。 RB-SWIPT 为高功率、远距离 WPT 和高速率通信提供了一种新方式。