Rectifier Design Challenges Towards Beyond 5G/6G Implementation

Simultaneously wireless information and power transmission is a significant system in beyond 5G/6G system. That system employs modulated signals which have a wide dynamic power range. On a point of view of the wireless power transmission, rectifier, which converts RF signal into DC power, is a key device. Rectifier characteristics depend on nonlinearity of active devices used on it, resulting in the optimized performance on a certain input power range. The conversion efficiency of the rectifier widely varies when input power shifts from the optimal level. That is the main issue on the above system. This presentation summarizes various circuit design techniques, impact of various modulated signals on the rectifier performance, and optimal input waveform designs for the wide dynamic range rectifier. In addition, this paper compares the performances of those rectifiers to use the proposed novel Figure of Merit (FOM).