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Omron antenna technology improves RFID tag reading performance

Posted: 29 Mar 2006 ?? ?Print Version ?Bookmark and Share

Keywords:Omron? antenna technology? UHF-band? RFID?

Omron Corp. announced that it has developed a new electronic control antenna technology that is touted to be the first of its kind to be embedded in UHF-band RFID reader that can improve RFID tag reading performance.

UHF offers significantly greater communications range than other frequency bands. However, UHF tags are subject to multipath interference, an inherent problem of electromagnetic signals, which can make an RFID tag unreadable even if it is within the range of the reader.

In response, Omron developed the patent-pending antenna technology that can electronically control the electromagnetic field emitted from the reader. By adopting this technology for UHF RFID systems, said the company, they succeeded in reducing reflections, thus minimizing the degradation of system performance due to multipath interference.

While an electromagnetic wave from a conventional antenna propagates over a wide area as it travels in a given direction, Omron's new antenna technology allows a wave with directivity to propagate in any specific direction, with the direction of the propagation controllable from the reader. This makes it possible to direct the wave's direction of propagation so as to avoid objects in the vicinity of the beam that may cause signal reflections, explained the company. The result is reduced multipath interference, leading to improved tag read performance of UHF RFID readers.

Omron's new technology promises to deliver faster data transfer and more stable communications between the reader and RFID tag compared to conventional RFID systems. In addition, it lessens the need for adjustment in varied system installation conditions and minimizes impediments to system performance, said the press release.

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