Broadband RCN-based RF-rectifier with a large range of power for harvesting ambient wireless energy


Muhammad, Surajo and Tiang, Jun Jiat and Wong, Sew Kin and Nebhen, Jamel and Smida, Amor and Waly, Mohamed Ibrahim and Iqbal, Amjad (2022) Broadband RCN-based RF-rectifier with a large range of power for harvesting ambient wireless energy. AEU - International Journal of Electronics and Communications, 152. p. 154228. ISSN 1434- 8411

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In this paper, a broadband RF-rectifier with a wide scale of RF input power levels, using FR-4 substrate, is proposed. A wideband resistance compression network (RCN) is applied to achieve the unique RF-rectifier design approach. The method improves the matching performance of the circuit over a broader range of the available input RF signals and frequency. The RF-rectifier circuit is configured in two sections. The two sections are configured using a modified L-section matching network (MN) through a series impedance transformer (ITx). A wideband RCN integrates the two RF-rectifier segments to a 50 transmission line (TL). The design provides a wider span of accessible RF power from −15 to 15 dBm via a 2 k load terminal. The proposed RF-rectifier achieved a simulated and measured fractional percentage bandwidth (FBW) of 38.5% and 38% from 1.780 to 2.620 GHz and 1.780 to 2.610 GHz, respectively. The maximum measured RF-to-DC PCE and output DC voltage () realized by the proposed RF harvester are 75.5% and 3.2 V, respectively. The design also reached a high PCE of 88.25% and 15.10%, respectively, from the quad-tone signals at 10 and −20 dBm RF input power. The proposed RF-rectifier’s ambient evaluation produces a of 0.322 V and also activated a low-power bq25504-674 evaluation module (EVM) at 0.682 V.

Item Type: Article
Uncontrolled Keywords: RF energy harvesting (RFEH), Impedance matching network (IMN), Resistance compression network (RCN), Power conversion efficiency (PCE), Broadband rectenna, Circular-slot antenna, Impedance transformer
Subjects: T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5101-6720 Telecommunication. Including telegraphy, telephone, radio, radar, television
Divisions: Faculty of Engineering (FOE)
Depositing User: Ms Nurul Iqtiani Ahmad
Date Deposited: 05 Jul 2022 01:58
Last Modified: 05 Jul 2022 03:02


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