Design Method of High Efficiency Rectenna for Microwave Power Transmission

A rectenna is an essential component of a microwave power transmission system. For highly efficient rectenna design, extracting the diode’s maximum rectification efficiency is crucial. This study proposes the calculation method of the theoretical efficiency of the diode and summarizes how to design a rectenna. In this paper, we calculated the theoretical efficiency of a GaAs Schottky barrier diode. The calculation result shows that the maximum rectification efficiency reaches 96.4% with the fundamental frequency of 920 MHz, the input power of 30.4 dBm, and the load resistance of 800 Ω, respectively.