Power generation circuit using electromagnetic wave
US7956593B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 3, 2005 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Jan 27, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/20
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A power generation circuit generates and stores electric power utilizing electromagnetic wave energy. The power generation circuit has one of an antenna or a coil that receives an electromagnetic wave. A rectifying circuit is formed on a silicon substrate and rectifies a signal from the antenna or the coil. A storage circuit stores an output power obtained from the rectifying circuit for driving a load. A MOS transistor has a source and a drain connected to an output of the storage circuit and the load, respectively, so that the load is connected to the storage circuit in accordance with a threshold voltage of the MOS transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.