Development of a Compact Rectenna for Wireless Powering of a Head-Mountable Deep Brain Stimulation Device
| Autor: | Abbas Z. Kouzani, Andrew Amiet, Amir Galehdar, Susannah J. Tye, Kamal Hosain, Osama A. Abulseoud, Michael Berk, Akif Kaynak |
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| Jazyk: | angličtina |
| Rok vydání: | 2014 |
| Předmět: |
lcsh:Medical technology
head mountable device passive device Biomedical Engineering Impedance matching lcsh:Computer applications to medicine. Medical informatics Article Deep brain stimulation rat Electrical impedance Physics Voltage doubler business.industry Pulse generator Transmitter Specific absorption rate General Medicine Rectenna specific absorption rate lcsh:R855-855.5 Return loss Optoelectronics lcsh:R858-859.7 planar inverted-F antenna business Telecommunications |
| Zdroj: | IEEE Journal of Translational Engineering in Health and Medicine, Vol 2, Pp 1-13 (2014) IEEE Journal of Translational Engineering in Health and Medicine |
| ISSN: | 2168-2372 |
| Popis: | Design of a rectangular spiral planar inverted-F antenna (PIFA) at 915 MHz for wireless power transmission applications is proposed. The antenna and rectifying circuitry form a rectenna, which can produce dc power from a distant radio frequency energy transmitter. The generated dc power is used to operate a low-power deep brain stimulation pulse generator. The proposed antenna has the dimensions of 10 mm \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} }{}$\times\,$ \end{document}12.5 mm \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} }{}$\times\,$ \end{document}1.5 mm and resonance frequency of 915 MHz with a measured bandwidth of 15 MHz at return loss of \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} }{}${-}{\rm 10}~{\rm dB}$ \end{document}. A dielectric substrate of FR-4 of \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} }{}$\varepsilon _{r}=4.8$ \end{document} and \documentclass[12pt]{minimal} \usepackage{amsmath} \usepackage{wasysym} \usepackage{amsfonts} \usepackage{amssymb} \usepackage{amsbsy} \usepackage{upgreek} \usepackage{mathrsfs} \setlength{\oddsidemargin}{-69pt} \begin{document} }{}$\delta=0.015$ \end{document} with thickness of 1.5 mm is used for both antenna and rectifier circuit simulation and fabrication because of its availability and low cost. An L-section impedance matching circuit is used between the PIFA and voltage doubler rectifier. The impedance matching circuit also works as a low-pass filter for elimination of higher order harmonics. Maximum dc voltage at the rectenna output is 7.5 V in free space and this rectenna can drive a deep brain stimulation pulse generator at a distance of 30 cm from a radio frequency energy transmitter, which transmits power of 26.77 dBm. A compact rectenna consisting of a rectangular antenna and a rectifier is presented for energy harvesting from a transmitter. The harvested energy is then used to operate a passive head-mountable deep brain stimulation device for murine preclinical research. The energy harvester enables the stimulator to operate indefinitely and eliminates the need for regular battery replacement. |
| Databáze: | OpenAIRE |
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