Planar antenna for RFID reader and RFID PDA incorporating the same
US9692129B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 11, 2015 |
| Grant date | Jun 27, 2017 |
| Priority date | — |
| Expiry date | Oct 2, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/42
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A planar antenna comprising: a substrate (10) having opposed first (10A) and second (10B) flat faces; the first flat face comprising a first ground (12), a second ground (14), a feed track (16) there between and an antenna pattern (18) and the opposed second flat face comprising a third ground (20); the third ground being connected to first and second grounds for assuring the continuity of the ground plane with the feeding; and the antenna pattern forms a coil line disposed into the remaining surface of the first flat face and comprises two overlapped loops in such a way that the antenna pattern is substantially auto-complementary.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.