RFID-Tag-System und RFID-Lese-/-Schreibgerät

Details

Veröffentlichungs-Nr.

EP2639878

Aktenzeichen

EP13158729

Anmeldetag

12. März 2013

Veröffentlichung

19. Dezember 2018

Erteilung

19. Dezember 2018

Rechtsraum

EP

IPC

H01Q1/22G06K7/10H01Q9/04

Abstract

An aspect of the present invention provides an RFID tag system in which a null point is hardly generated. The RFID tag system includes an RFID tag and an RFID reader/writer. The RFID reader/writer includes a transmission circuit that transmits a circularly-polarized radio wave to the RFID tag, a receiving circuit that separately receives horizontal and vertical polarization components of a return wave from the RFID tag; and a received signal combination part that logically combines signals separately received by the receiving circuit. The received signal combination part includes an optimum combination part that combines the horizontal polarization component and the vertical polarization component such that an S/N ratio of the received signal is enhanced compared with the case that the horizontal polarization component and the vertical polarization component are separately received.

Anmelder

Firma

OMRON Corporation

Land

🇯🇵 Japan

Fachgebiete