Development of a Compact Rectenna for Wireless Powering of a Head-mountable Deep Brain Stimulation Device
Design of a rectangular spiral planar inverted-F antenna (PIFA) at 915 MHz for wireless power transmission applications is proposed. The antenna and the 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 × 12.5 mm × 1.5 mm, resonance frequency of 915 MHz with a measured bandwidth of 15 MHz at return loss of −10 dB. A dielectric substrate of FR-4 of εr = 4.8 and δ = 0.015 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 Lsection impedance matching circuit is used between the PIFA and the 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.
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See complete bios of the authors in the full version of this article.
Mr. Hosain is pursuing a Ph.D. at Deakin University, Victoria, Australia. His current research interests include development of devices, and antennas and their applications to biomedical engineering, particularly deep brain stimulation.
Dr. Kouzani is an Associate professor with the School of Engineering, Deakin University. He has been involved in over $2 million research grants, and has published over 240 refereed papers. His current research interests include medical/biological microsystems, microfluidic lab-on-a-chip systems, bioinstrumentation, and biosensors and implants. He is the Leader of Deakin University’s BioMEMS Research Group.
Dr. Tye is an Assistant Professor of psychiatry and psychology, where she directs the Translational Neuroscience Laboratory, with a focus on developing valid preclinical models of treatment resistant depression and bipolar disorder for investigation of disease and therapeutic mechanisms, utilizing deep brain stimulation.
Dr. Abulseoud is an Assistant Professor of psychiatry with Mayo Medical School, with clinical practice in mood disorders and teaching activities in psychopharmacology. He is involved in basic, clinical, and translational research with a focus on studying the disease process and novel therapeutic strategies.
Dr. Amiet is currently the head of the Electromagnetic Signature Management Group in the Maritime Division of DSTO. His research interests include passive and active radar absorbing material development, and radar cross section reduction methods.
Dr. Galedhar worked at the Royal Melbourne Institute of Technology (RMIT) until 2012 investigating the electromagnetic behaviour of advanced fibre composites and conformal load bearing antenna structure (CLAS). His research interests are multi functional platforms, load bearing conformal Corbon fiber reinforced polymers (CFRP) antennas, small antennas and radio frequency identification (RFID) antennas.
Dr. Kaynak is an Associate Professor in mechanical engineering. Subjects he teaches include physics, statics, dynamics, stress analysis, fibre science, and materials science. His research interests are polymer coatings, functional textiles, and sensors. He is a regular reviewer for various international journals and a coinventor in a patent on conducting polymer coated wool.
Dr. Berk is a NHMRC Senior Principal research Fellow, and is Alfred Deakin Chair of Psychiatry at Deakin University, where he heads the IMPACT Strategic Research Centre. His major interests are in the discovery and implementation of novel therapies, and risk factors and prevention of psychiatric disorders.