A wideband electromagnetic micro power generator for wireless microsystems

Sari I., Balkan T., KÜLAH H.

14th International Conference on Solid-State Sensors, Actuators and Microsystems/21st European Conference on Solid-State Transducers, Lyon, France, 10 - 14 June 2007 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1109/sensor.2007.4300122
  • City: Lyon
  • Country: France
  • Keywords: micro power generation, electromagnetic power generation, energy scavenging, energy harvesting, frequency sweeper
  • Middle East Technical University Affiliated: Yes

Abstract

This paper presents a wideband electromagnetic (EM) vibration-to-electrical power generator which can efficiently scavenge energy and generate steady power over a predetermined frequency range. Power is generated by means of electromagnetic induction using a magnet and coils on top of resonating cantilever beams. The reported generator covers a wide band of external vibration frequency by implementing a number of serially connected cantilevers in different lengths. The device generates 0.5 mu W continuous power with 20 mV voltage between 3.3 and 3.6 kHz of external vibration.