A fully integrated CMOS tri-band ambient RF energy harvesting system for IoT devices

Yong, Jack Kee and Lian, Wen Xun and Ramiah, Harikrishnan and Churchill, Kishore Kumar Pakkirisami and Chong, Gabriel and Lai, Nai Shyan and Chen, Yong and Mak, Pui-In and Martins, Rui P. (2023) A fully integrated CMOS tri-band ambient RF energy harvesting system for IoT devices. IEEE Transactions on Circuits and Systems, 70 (12). pp. 4705-4718. ISSN 1549-8328, DOI https://doi.org/10.1109/TCSI.2023.3304664.

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Abstract

This article presents a fully integrated tri-band RF energy harvesting system (RFEH) in 65-nm CMOS technol-ogy. The system is designed to harvest ambient RF energies at 900 MHz, 1.9 GHz, and 2.4 GHz through a tri-band impedance matching network (IMN), cross-coupled differential-drive (CCDD) rectifier, and an output voltage monitoring circuit to limit the rectified output voltage to 3.3 V. The system achieves a power conversion efficiency (PCE) of over 30 % across all three frequency bands with a peak of 42.8 %. Furthermore, the system exhibits a peak sensitivity of-20 dBm at an output DC voltage of 1 V output.

Item Type: Article
Funders: Collaborative Research in Engineering, Science and Technology Centre [Grant no. IF059-2022, MG024-2022, PV026-2020, T05C2-19]
Uncontrolled Keywords: Radio frequency energy harvesting (RFEH); Tri-band; Multiband; Impedance matching network (IMN); Over-voltage limiter; CMOS
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering
Divisions: Faculty of Engineering > Department of Electrical Engineering
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 11 Oct 2025 13:15
Last Modified: 11 Oct 2025 13:15
URI: http://eprints.um.edu.my/id/eprint/48170

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