Method and apparatus for reducing spurious RF signals in RFID reader
US8315562B2 · kind B2 · utility
4Cited by
3References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 21, 2008 |
| Grant date | Nov 20, 2012 |
| Priority date | — |
| Expiry date | Mar 10, 2031 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/0008
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A method for improving RFID readers includes transmitting an outgoing RF signal to an antenna through a directional device, and generating a demodulated vector signal from an RF signal related to the RF signal received from the receiver. The method also includes setting the impedance of a controllable-variable-reflectance element with control-parameters from a memory circuit. The memory circuit includes a look up table having therein a corresponding relationship between the control-parameters and an error vector related to the demodulated vector signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.