A W-Band Rectenna Using On-Chip CMOS Switching Rectifier and On-PCB Tapered Slot Antenna Achieving 25% Effective-Power-Conversion Efficiency for Wireless Power Transfer

This paper presents a W-band rectenna unit, which incorporates an optimized CMOS switching rectifier and a print tapered slot antenna. The switching rectifier achieves a peak PCE of 45.8% at 94 GHz with improved reliability. The overall PCE of the rectenna unit up to 25% is achieved with 5.6 mW output dc power under 90 mW/cm2 incident power density.