Mid-range wireless energy transfer using inductive resonance for wireless sensors

  • Authors:

  • Shahrzad Jalali Mazlouman;Alireza Mahanfar;Bozena Kaminska

  • Affiliations:

  • Simon Fraser University;Simon Fraser University;Simon Fraser University

  • Venue:
  • ICCD'09 Proceedings of the 2009 IEEE international conference on Computer design
  • Year:
  • 2009

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Abstract

Methods are suggested and tested to measure and optimize the wireless energy transfer efficiency for mid-range (10-100cm) inductive coils with relatively low profile using magnetic resonance. These coils can be used to provide energy for wireless sensors and battery-operated devices. It is shown that for every system, a resonance frequency can be identified where the wireless energy transfer efficiency is optimal. Several prototypes are developed and tested as a proof of validity of the proposed technique. It is also shown that by tuning to the optimum resonant frequency and designing proper matching circuitry, an efficiency of about 25% for moderate profiles can be achieved.