Method of transporting radio frequency power to energize radio frequency identification transponders
US5850181A · kind A · utility
107Cited by
5References
30Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Apr 3, 1996 |
| Grant date | Dec 15, 1998 |
| Priority date | — |
| Expiry date | Apr 3, 2016 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/0008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
An apparatus and a method of transporting energy from a base station to energize a remote RF transponder having an energy store is described, comprising transporting power in pulses of frequencies chosen from a randomly ordered list of frequencies, wherein the time between pulses when little power is transmitted is less than the time taken for the remote transponder to deplete the energy store.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.