RFID tags with enhanced range and bandwidth obtained by spatial antenna diversity
US8077044B2 · kind B2 · utility
14Cited by
4References
31Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 2, 2009 |
| Grant date | Dec 13, 2011 |
| Priority date | — |
| Expiry date | Jun 22, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/16
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Spatial antenna diversity is used with RFID tags to reduce sensitivity to multi-path fading. RFID tags can use a single multi-port chip or multiple multi-port chips. The ports of the chip or chips are coupled to separated feedpoints on one or more antennas.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.