Multiple antenna energy harvesting
US7791557B2 · kind B2 · utility
26Cited by
13References
8Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 2, 2009 |
| Grant date | Sep 7, 2010 |
| Priority date | — |
| Expiry date | Apr 2, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/402
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
Energy harvesting circuits and associated methods are provided that employ multiple antennas to optimize the amount of energy that is harvested while at the same time making efficient use of tag space. In some embodiments, matching networks are chosen in a manner that optimizes the DC energy that is created from the harvesting process. In other embodiments, phase shifts are introduced into the received signals to allow the signals to be more efficiently combined after they are rectified.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.