High-efficiency rectifier with extended input power range based on two parallel sub-rectifying circuits

Abstract

This paper presents a two-way rectifier with high efficiency over an extended range of input power. The proposed solution is based on a 2:1 power divider cascaded with two sub-rectifiers. The two sub-rectifying circuits are designed to obtain maximum RF-dc conversion efficiency at different input power levels. By combining the two subrectifiers using a power divider, the proposed rectifier has two peak power conversion efficiencies (PCEs) and thus the high-efficiency PCE range can be extended. Moreover, at the same input power levels, the proposed rectifier can maintain nearly the same or even higher PCE than the single one. For validation, the proposed rectifier is implemented and the results are presented.