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

Muhammad S 1 , Waly MI 2 , AlJarallah NA 3 , Ghayoula R 4 , Negm AS 5 , Smida A 6 Show all authors , Iqbal A 7 , Tiang JJ 1 , Roslee M 1

Affiliations 

  • 1 Faculty of Engineering, Centre For Wireless Technology (CWT), Multimedia University, Cyberjaya, 63100, Malaysia
  • 2 Department of Medical Equipment Technology, College of Applied Medical Science, Majmaah University, Al Majmaah, 11952, Saudi Arabia. m.waly@mu.edu.sa
  • 3 Department of Business Administration, Majmaah University, 11952, Majmaah, Saudi Arabia
  • 4 Department of Electrical and Computer Engineering, Laval University, Quebec City, QC, G1V0A6, Canada
  • 5 Consultant, Saudi Consolidated Engineering Company Healthcare Technology Management Administration, King Fahad Medical City, Riyadh, Saudi Arabia
  • 6 Department of Medical Equipment Technology, College of Applied Medical Science, Majmaah University, Al Majmaah, 11952, Saudi Arabia
  • 7 Institut National de la Recherche Scientifique (INRS), Montréal, QC, H5A1K6, Canada. aiqbal@ieee.org
Sci Rep, 2023 Aug 15;13(1):13246.
PMID: 37582883 DOI: 10.1038/s41598-023-40486-x

Abstract

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 [Formula: see text] of 1.61 V for an RF power of 2 dBm. The outdoor performance of the rectenna shows a [Formula: see text] 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 0.27[Formula: see text] [Formula: see text] 0.29[Formula: see text]. 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).

* Title and MeSH Headings from MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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