Development of a compact rectenna for wireless powering of a head-mountable deep brain stimulation device

Md Kamal Hosain, Abbas Z. Kouzani, Susannah J. Tye, Osama A. Abulseoud, Andrew Amiet, Amir Galehdar, Akif Kaynak, Michael Berk

Research output: Contribution to journalArticle

21 Scopus citations

Abstract

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 × 12.5 mm × 1.5 mm and 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 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.

Original languageEnglish (US)
Article number1500113
JournalIEEE Journal of Translational Engineering in Health and Medicine
Volume2
DOIs
StatePublished - 2014

Keywords

  • Feeds
  • Head
  • Impedance
  • Rectennas
  • Satellite broadcasting
  • Spirals

ASJC Scopus subject areas

  • Biomedical Engineering

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