RFID reader and method for suppressing transmission leakage signal thereof
US8666323B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 25, 2010 |
| Grant date | Mar 4, 2014 |
| Priority date | — |
| Expiry date | May 8, 2032 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10346
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
Provided are an RFID reader and a method for suppressing transmission leakage signals thereof. The RFID reader includes a first loop, a second loop, and a digital signal processor. The first loop suppresses a first transmission leakage signal of an RX signal in response to a first leakage control signal. The second loop suppresses a second transmission leakage signal of the RX signal, received through the first loop, in response to a second leakage control signal. The digital signal processor generates the first leakage control signal and the second leakage control signal. The digital signal processor generates the first leakage control signal until the level of the first transmission leakage signal becomes equal to or lower than the level of a first reference transmission leakage signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.