The concept of long-range microwave power transmission (MPT) has been driven by the desire to remotely power satellites, drones, or some mobile facilities. The advantage of long-range MPT is power transmission over a long distance without the need to deploy a wired power network. However, the overall efficiency, robustness, directional radiation (DR), and so on are still issues that limit the application and further research. In this framework, the key challenges in designing transmitters, DR, and receivers that can guarantee high efficiency and precise tracking for long-range MPT have been acknowledged. Owing to the complexity, the design of the MPT systems remains an open research question. Focusing on the existing constraints, this article not only elaborates on the current major research topics and discusses the development trends but also reviews the design approaches proposed in the state of the art for long-range MPT. This power transmission mechanism shows essential meanings of application in daily life, and the current research status and development prospects for MPT are also presented in this article.

中文翻译：

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远程无线微波功率传输：最新进展回顾

远程微波功率传输 (MPT) 的概念是由远程为卫星、无人机或某些移动设施供电的愿望推动的。远距离 MPT 的优势是远距离电力传输，无需部署有线电力网络。然而，整体效率、鲁棒性、定向辐射（DR）等仍然是限制应用和进一步研究的问题。在这个框架中，设计发射器、DR 和接收器以保证远程 MPT 的高效和精确跟踪的关键挑战已经得到承认。由于复杂性，MPT 系统的设计仍然是一个开放的研究问题。着眼于现有的限制，本文不仅阐述了当前的主要研究课题并讨论了发展趋势，而且还回顾了现有技术中提出的远程 MPT 设计方法。这种动力传递机制在日常生活中具有重要的应用意义，本文还介绍了MPT的研究现状和发展前景。