Radio frequency energy harvesting from a feeding source in a passive deep brain stimulation device for murine preclinical research
Hosain, Md Kamal, Kouzani, Abbas Z., Tye, Susannah J., Samad, Mst Fateha, Kale, Rajas P, Bennet, Kevin E., Manciu, Felicia S. and Berk, Michael 2015, Radio frequency energy harvesting from a feeding source in a passive deep brain stimulation device for murine preclinical research, Medical engineering and physics, vol. 37, pp. 1020-1026, doi: 10.1016/j.medengphy.2015.07.003.
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Radio frequency energy harvesting from a feeding source in a passive deep brain stimulation device for murine preclinical research
This paper presents the development of an energy harvesting circuit for use with a head-mountable deep brain stimulation (DBS) device. It consists of a circular planar inverted-F antenna (PIFA) and a Schottky diode-based Cockcroft-Walton 4-voltage rectifier. The PIFA has the volume of π × 10(2) × 1.5 mm(3), resonance frequency of 915 MHz, and bandwidth of 16 MHz (909-925 MHz) at a return loss of -10 dB. The rectifier offers maximum efficiency of 78% for the input power of -5 dBm at a 5 kΩ load resistance. The developed rectenna operates efficiently at 915 MHz for the input power within -15 dBm to +5 dBm. For operating a DBS device, the DC voltage of 2 V is recorded from the rectenna terminal at a distance of 55 cm away from a 26.77 dBm transmitter in free space. An in-vitro test of the DBS device is presented.
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