Churchill, Kishore Kumar Pakkirisami and Ramiah, Harikrishnan and Chong, Gabriel and Chen, Yong and Mak, Pui-In and Martins, Rui P. (2022) A fully-integrated ambient RF energy harvesting system with 423-mu W output power. Sensors, 22 (12). ISSN 1424-8220, DOI https://doi.org/10.3390/s22124415.
Full text not available from this repository.Abstract
This paper proposes a 2.4-GHz fully-integrated single-frequency multi-channel RF energy harvesting (RFEH) system with increased harvested power density. The RFEH can produce an output power of similar to 423-mu W in harvesting ambient RF energy. The front-end consists of an on-chip impedance matching network with a stacked rectifier concurrently matched to a 50 omega input source. The circuit mitigates the ``dead-zone'' by enhancing the pumping efficiency, achieved through the increase of V-gs drivability of the proposed internal gate boosting 6-stage low-input voltage charge pump and the 5-stage shared-auxiliary-biasing ring-voltage-controlled-oscillator (VCO) integrated to improve the start-up. The RFEH system, simulated in 180-nm complementary metal-oxide-semiconductor (CMOS), occupies an active area of 1.02 mm(2). Post-layout simulations show a peak power conversion efficiency(PCE) of 21.15%, driving a 3.3-k omega load at an input power of 0 dBm and sensitivity of -14.1 dBm corresponding to an output voltage, V-out,V-RFEH of 1.25 V.
| Item Type: | Article |
|---|---|
| Funders: | Macau Science and Technology Development Fund (FDCT) through the SKL Fund SKL-AMSV(UM)-2020-2022, Macau Science and Technology Development Fund (FDCT) through the SKL Fund IF071-2020, Macau Science and Technology Development Fund (FDCT) through the SKL Fund RK002-2021 |
| Uncontrolled Keywords: | RF energy harvesting (RFEH); CMOS; RF-DC; DC-DC; Charge pump; Clock generator; Ring-VCO; Shared-dynamic-biasing |
| Subjects: | Q Science > QD Chemistry T Technology > TA Engineering (General). Civil engineering (General) |
| Divisions: | Faculty of Engineering > Department of Electrical Engineering |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 17 Oct 2023 02:26 |
| Last Modified: | 17 Oct 2023 02:29 |
| URI: | http://eprints.um.edu.my/id/eprint/41948 |
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