Virginia Municipal League
Energy constraints are widely regarded as a fundamental limitation of wireless and mobile devices. For sensor networks, a limited lifetime due to battery constraint poses a performance bottleneck and barrier for large scale deployment. Recently, wireless power transfer has emerged as a promising technology to address energy and lifetime bottlenecks in a sensor network. In this paper, the authors give a review of the history of wireless power transfer and describe its recent developments. They show how such technologies can be applied to sensor networks and address their energy constraints.