Radio frequency switch and method for controlling the same, and radio frequency identification smart shelf system
US9117127B2 · kind B2 · utility
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18Claims
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Key dates
| Filing date | Sep 6, 2012 |
| Grant date | Aug 25, 2015 |
| Priority date | — |
| Expiry date | Jun 14, 2033 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K7/10356
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A radio frequency identification (RFID) smart shelf system manages a product through communication with an RFID tag that is attached to the product on a shelf, and includes an RFID reader, a plurality of reader antennas, and an RF switch that is connected between the RFID reader and the plurality of reader antennas. The RF switch periodically varies a phase difference between RF signals of a portion of a plurality of output connection ports that set a connection to each of the plurality of reader antennas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.