Strategy for Microwave Energy Harvesting From Ambient Field or a Feeding Source
- Resource Type
- Periodical
- Authors
- Marian, V.; Allard, B.; Vollaire, C.; Verdier, J.
- Source
- IEEE Transactions on Power Electronics IEEE Trans. Power Electron. Power Electronics, IEEE Transactions on. 27(11):4481-4491 Nov, 2012
- Subject
- Power, Energy and Industry Applications
Aerospace
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Computing and Processing
Engineered Materials, Dielectrics and Plasmas
Fields, Waves and Electromagnetics
General Topics for Engineers
Nuclear Engineering
Signal Processing and Analysis
Transportation
Rectennas
Schottky diodes
Wireless sensor networks
Energy exchange
Receiving antennas
Contactless energy supply
energy harvesting
rectenna
switch
- Language
- ISSN
- 0885-8993
1941-0107
Wireless energy transfer has been demonstrated using microwave electromagnetic support. Significant efficiencies are reported in the case of large dimension systems. Lots of embedded systems require a small power supply but with a large degree of integration where standard contactless energy transfer techniques suffer from poor efficiency. In such systems, RF input energy is rectified using rectenna circuits. The latter circuits are optimized for a given input RF power and cannot accommodate the two possible ways of energy transfer: the dedicated transfer (high power) or the harvesting of ambient energy (low power). This paper presents a novel rectenna architecture tunable for 900 MHz–2.45 GHz operation, able to process RF input power in the $-$30 to +30 dBm (dB miliwatt) range with a peak efficiency of 80%.