Compact Voltage Doubler Rectifier for RF Energy Harvesting in Wearable Biomedical Devices

The compact voltage doubler rectifier incorporates a rectangular square wave-shaped DC filter to smooth the rectified signal. With dimensions of 33 × 13 mm, it is well-suited for wearable biomedical devices. The rectifier demonstrates high sensitivity at low input power levels, effectively balancing size and power conversion efficiency (PCE), making it ideal for WBDs where both factors are crucial. This work contributes to the advancement of efficient RF energy harvesting (RFEH) solutions for wearable biomedical applications.