Authors:
Florian Grante
;
Ghalid Abib
;
Muriel Muller
and
Nel Samama
Affiliation:
Département Electronique et Physique (EPh), Télécom SudParis, Institut Polytechnique de Paris, 19 Rue Marguerite Perey, 91120, Palaiseau, France
Keyword(s):
RF Electromagnetic Energy, Energy Harvesting, WiFi, Autonomous Sensor, Schottky Diode, RF/DC Rectifier, Boost, Energy Budget Analysis, Green IoT.
Abstract:
This paper presents a new approach to the sizing of a radio frequency energy harvesting system. Starting from a sensor node to define our system constraints such as its energy requirement or its supply voltage, an energy budget analysis protocol is developed to validate whether it is possible to power such a system with a Radio Frequency to Direct Current (RF/DC) converter. We study a converter capable of harvesting RF signals in the Industrial, Scientific and Medical (ISM) band at 2.45 GHz whose ambient power has been previously characterized. Finally, the duty cycle is determined, i.e., how long would it take the converter to recover the required energy in order to power the sensor node.