A multiband SSr diode RF rectifier with an improved frequency ratio for biomedical wireless applications


Muhammad, Surajo and Waly, Mohamed Ibrahim and AlJarallah, Nasser Ali and Ghayoula, Ridha and Negm, Ahmed S. and Smida, Amor and Iqbal, Amjad and Tiang, Jun Jiat and Roslee, Mardeni (2023) A multiband SSr diode RF rectifier with an improved frequency ratio for biomedical wireless applications. Scientific Reports, 13 (1). ISSN 2045-2322

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This paper described a four-band implantable RF rectifier with simplified circuit complexity. Each RF-rectifier cell is sequentially matched to the four operational frequencies to accomplish the proposed design. The proposed RF rectifier can harvest RF signals at 1.830, 2.100, and white space Wi-Fi bands between 2.38 to 2.68 GHz, respectively. At 2.100 GHz, the proposed RF harvester achieved a maximum (radio frequency direct current) RF-to-DC power conversion efficiency (PCE) of 73.00% and an output DC voltage VDC of 1.61 V for an RF power of 2 dBm. The outdoor performance of the rectenna shows a VDC of 0.440 V and drives a low-power bq25504-674 evaluation module (EVM) at 1.362 V. The dimension of the RF-rectifier on the FR-4 PCB board is 0.27λg × 0.29λg . The RF-rectifier demonstrates the capacity to effectively utilize the frequency domain by employing multi-band operation and exhibiting a good impedance bandwidth through a sequential matching technique. Thus, by effectively controlling the rectenna’s ambient performance, the proposed design holds the potential for powering a range of low-power biomedical implantable devices. (BIDs).

Item Type: Article
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: 04 Sep 2023 01:12
Last Modified: 04 Sep 2023 01:12
URII: http://shdl.mmu.edu.my/id/eprint/11630


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