Radio frequency energy harvesting from a feeding source in a passive deep brain stimulation device for murine preclinical research

Med Eng Phys. 2015 Oct;37(10):1020-6. doi: 10.1016/j.medengphy.2015.07.003. Epub 2015 Aug 28.

Abstract

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.

Keywords: Deep brain stimulation; Radio frequency energy harvesting; Rectenna.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Deep Brain Stimulation / instrumentation*
  • Electrical Equipment and Supplies*
  • Equipment Design
  • Head
  • Mice
  • Models, Animal
  • Radio Waves*