Antenna, tag communication apparatus, tag communication system, scanning adjusting method for tag communication apparatus and computer readable medium
US7724140B2 · kind B2 · utility
4Cited by
12References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 30, 2005 |
| Grant date | May 25, 2010 |
| Priority date | — |
| Expiry date | May 12, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/30
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
An RFID reader/writer performs a radio communication with an RFID tag. An antenna for tag communication used in the RFID reader/writer is a beam scanning antenna that can perform scanning with the beam of a transmitted radio wave. The beam has a high directivity in a certain scanning direction. The scanning with the beam is performed so that a plane including the certain scanning direction intersects with a floor surface as a reflecting surface on which the strongest reflected wave is generated.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.