Dynamic impedance matching network for RF energy harvesting systems

In this paper, an RF energy harvesting system with an improved dynamic impedance matching network (DyIMN) is proposed. With this solution, the minimum RF input power required for circuit operation is -10 dBm, allowing a working distance of 1.5 m from an RF energy source of 30dBm. The system was fabricated on an FR4 substrate using off-the-shelf discrete components and it is able to convert RF energy to regulated DC voltage in order to power general-purpose electronic devices. The experimental results demonstrate the capability of the system to obtain an optimum impedance matching with a received RF power in the range -10 - +5dBm.

[1]  G. Marrocco,et al.  The art of UHF RFID antenna design: impedance-matching and size-reduction techniques , 2008, IEEE Antennas and Propagation Magazine.

[2]  Massimo Merenda,et al.  Battery-less smart RFID tag with sensor capabilities , 2012, 2012 IEEE International Conference on RFID-Technologies and Applications (RFID-TA).

[3]  Massimo Merenda,et al.  Remotely Powered Smart RFID Tag for Food Chain Monitoring , 2011 .

[4]  Jiming Chen,et al.  Energy provisioning in wireless rechargeable sensor networks , 2011, 2011 Proceedings IEEE INFOCOM.

[5]  D.J. Yeager,et al.  Wirelessly-Charged UHF Tags for Sensor Data Collection , 2008, 2008 IEEE International Conference on RFID.

[6]  Prusayon Nintanavongsa,et al.  Design Optimization and Implementation for RF Energy Harvesting Circuits , 2012, IEEE Journal on Emerging and Selected Topics in Circuits and Systems.

[7]  Danilo De Donno,et al.  An UHF RFID Energy-Harvesting System Enhanced by a DC-DC Charge Pump in Silicon-on-Insulator Technology , 2013, IEEE Microwave and Wireless Components Letters.

[8]  Franco Maloberti,et al.  Impedance-matched sensor-tag antenna design using genetic algorithm optimization , 2011, 2011 5th International Symposium on Medical Information and Communication Technology.

[9]  William C. Brown,et al.  The history of wireless power transmission , 1996 .