Compact dual-mode UHF RFID reader antenna systems and methods
US8319694B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 11, 2009 |
| Grant date | Nov 27, 2012 |
| Priority date | — |
| Expiry date | Apr 3, 2031 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q13/106
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
The present disclosure relates to compact, dual-mode ultra high frequency (UHF) radio frequency identification (RFID) reader antenna systems and methods capable of supporting both long range and short range applications. The present invention includes a dual-mode antenna design, a dual-mode RFID reader utilizing the dual-mode antenna design, and an associated usage method. The dual-mode antenna design may include a patch operating mode for long range applications and a slot operating mode for short range applications. Additionally, the dual-mode antenna design may include mechanisms to improve the patch operating mode bandwidth, circular polarization in the patch operating mode, and dual polarization in the slot operation mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.