Remotely powered contactless card
US10432023B2 · kind B2 · utility
2Cited by
2References
16Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 11, 2016 |
| Grant date | Oct 1, 2019 |
| Priority date | — |
| Expiry date | Jun 8, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH02J50/80
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A contactless card is powered by an antenna connected to the input of a rectifier. An output of the rectifier is coupled to a processing unit that consumes a first current output from the rectifier. A current regulation circuit is connected to the output of the rectifier. The current regulation circuit operates to absorb a second current from the output of the rectifier such that a sum of the first and second currents is a constant current.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.