Switching patch antenna
US7068224B2 · kind B2 · utility
3Cited by
5References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 12, 2004 |
| Grant date | Jun 27, 2006 |
| Priority date | — |
| Expiry date | Mar 12, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/045
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
According to an embodiment of the invention, a patch antenna includes a patch coupled to a ground plane. The ground plane includes a first and second strip line. When the first strip line is activated, the antenna generates a signal having a first polarization, and when the second strip line is activated, the antenna generates a second polarization. The first polarization may be a horizontal polarization, and the second polarization may be a vertical polarization. The antenna may be incorporated into a radio frequency identification (RFID) interrogator, which may be used to read RFID tags attached to individual items.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.