Various methods have been proposed to control the electromagnetic fields in the near-or far-field region, one of which is to use antenna arrays. This paper reviews a technique, called the method of maximum power transmission efficiency (MMPTE), for the design of antenna arrays and wireless power transmission (WPT) systems. The method is motivated by the fact that all wireless systems aim to maximize the power transmission efficiency (PTE) between the transmitter and receiver and the PTE can thus be considered as a performance index for the design of WPT system and antenna as well. The MMPTE makes use of the PTE as the performance index to be optimized, and reduces a field synthesis problem into a circuit analysis problem, and is therefore easy to master and implement. It overcomes all the challenges associated with conventional array design methods, and is applicable to the design of any type of antenna array in any environment. This paper summarizes the basic theory of MMPTE and demonstrates MMPTE through a number of near- and far-field applications, including focused antennas, smart antennas, shaped beam antennas, end-fire antennas, multi-beam antennas, polarization-reconfigurable antennas, and wireless power transmission systems.

中文翻译：

---

天线阵列设计的最大功率传输效率方法

已经提出了各种方法来控制近场或远场区域中的电磁场，其中一种方法是使用天线阵列。本文概述了一种用于天线阵列和无线功率传输（WPT）系统设计的技术，称为最大功率传输效率（MMPTE）。该方法受到以下事实的启发：所有无线系统旨在最大化发送器和接收器之间的功率传输效率（PTE），因此PTE可以被视为WPT系统和天线设计的性能指标。MMPTE利用PTE作为要优化的性能指标，并将场综合问题简化为电路分析问题，因此易于掌握和实施。它克服了与常规阵列设计方法相关的所有挑战，并且适用于在任何环境下设计任何类型的天线。本文总结了MMPTE的基本理论，并通过许多近场和远场应用对MMPTE进行了演示，包括聚焦天线，智能天线，异形波束天线，端射天线，多波束天线，极化可重配置天线以及无线电力传输系统。