What question did this study set out to answer?

The research aims to design a CMOS rectifier for efficient power transfer in wireless systems.

January 21, 2026Electronics0 citationsOpen Access

Design of a CMOS Self-Bootstrapping Rectifier with Latch-Up Protection for Wireless Power Harvesting Systems

MSMuh‐Tian ShiueNational Central University YLYu-Fan LoNational Central University CGCihun-Siyong Alex GongNational Central University

Key Points

The research aims to design a CMOS rectifier for efficient power transfer in wireless systems.
Developed a bootstrap-comparator rectifier circuit
Utilized a 0.18 µm manufacturing process
Operated with a 2 MHz, 3.3 V sine wave input signal
Achieved a maximum voltage conversion efficiency of 89.02% at 8kΩ load
Secured a maximum power conversion efficiency of 84.73% at 500Ω load
Temperature rise during operation was minimal, between 0.22–0.45°C.

Abstract

This study, based on the specifications of implantable medical devices for wireless power transfer, presents a bootstrap-comparator rectifier circuit design characterized by high voltage conversion efficiency, high power conversion efficiency, and improved reliability. The design is implemented using a 0.18 µm process to achieve superior VCE and PCE performance. The input signal is a 2 MHz, 3.3 V sine wave, producing an output voltage of 2.94 V with a maximum operating current of 5 mA. At an output load of RL=8kΩ, the maximum voltage conversion efficiency (VCE) reaches 89.02%, while the maximum power conversion efficiency (PCE) is 84.73% at RL=500Ω. The temperature rise (ΔT) is 0.22–0.45∘C.

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