3.3V DC Output At-16dBm Sensitivity And 77% PCE Rectifier For RF Energy Harvesting

• Main Authors: Wong, Yan Chiew, Asli, Astrie Nurasyeila Fifie
• Format: Article
• Language: English
• Published: Institute Of Advanced Engineering And Science (IAES) 2019
• Subjects: T Technology (General); TK Electrical engineering. Electronics Nuclear engineering
• Online Access: http://eprints.utem.edu.my/id/eprint/24064/2/IJPEDS%20-%201570484267.pdf; http://eprints.utem.edu.my/id/eprint/24064/; http://ijpeds.iaescore.com/index.php/IJPEDS/article/view/19233; http://doi.org/10.11591/ijpeds.v10.i3.pp1398-1409
• Institution: Universiti Teknikal Malaysia Melaka

This paper presents a high voltage conversion at high sensitivity RF energy harvesting system for IoT applications. The harvesting system comprises bulk-to-source (BTMOS) differential-drive based rectifier to produce a high efficiency RF energy harvesting system. Low-pass upward impedance matching network is applied at the rectifier input to increase the sensitivity and output voltage. Dual-oxide-thickness transistors are used in the rectifier circuit to maintain the power efficiency at each stage of the rectifier. The system is designed using 0.18μm Silterra RF in deep n-well process technology and achieves 4.07V output at -16dBm sensitivity without the need of complex auxiliary control circuit and DC-DC charge-pump circuit. The system is targeted for urban environment.