Energy Harvesting – Access provider: imec (Holst Centre)

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Access Description
Technical Offering
Main Equipment
Typical Application
Case Study
Key Specifications

RF power transfer

Access Description
Access to Wireless Power Transfer design expertise for small receivers to charge wireless sensor nodes up to ten meters distance
Technical Offering
  • Transferring power requirements in WPT characteristics
  • Antenna selection, design, miniaturization and optimization
  • Rectifying circuit design and power conversion efficiency optimization
  • Overall WPT receiver optimization
  • WPT transmitter antenna design
Main Equipment
  • CST Microwave Studio full-wave electromagnetic simulation software
  • In-house developed diode analysis software
  • Several State of the Art Vector Network Analysers and Spectrum Analysers
  • Several State of the Art Signal Generators
Typical applications
Autonomous wireless sensor nodes – for home sensing and automation – are equipped with (super) capacitor power supplies. These capacitors are (semi-) continuously charged from a base station that is up to 10 meters distant from the node. One base station can power a multitude of sensor nodes within a 10 m radius.
Case Study
An SME or research team need to power a network of low-power wireless sensors but cannot use cabling or batteries. This can be due to retrofit specifications or harsh (industrial) environments. ENABLES will provide design and prototyping facilities for a radio wave powered solution.

Prof. dr. ir. Hubregt J. Visser

868 MHz / 915 MHz radio wave harvester 2.45 GHz radio wave harvester CST Microwave Studio full-wave electromagnetic simulation software
Key specifications
  • Most efficient, most compact harvester ever reported (2014)
  • 100 mW, during 1 ms, every 10 s
  • 6 cm × 12 cm
  • Smallest harvester
  • Shielding ground plane
  • 24 mm × 20 mm
  • Simulation software
  • Know-how in using in-house developed analysis tools for all components of WPT