Polarized RFID antenna with spatial diversity
US8174391B2 · kind B2 · utility
5Cited by
4References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 2, 2008 |
| Grant date | May 8, 2012 |
| Priority date | — |
| Expiry date | Sep 8, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q3/02
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A system, apparatus, and techniques for interrogating a Radio Frequency Identification (RFID) tag are disclosed. The system includes an RFID reader that includes a pivotable polarized antenna for reading a reader/tag link. The antenna moves at a specific frequency over a specific distance resulting in reader/tag links being moved out of a null region of the reader. Advantageously, by pivoting the antenna, the antenna apparatus minimizes signal fading and improves signal quality from tags.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.