Near field communications apparatus
US9698871B2 · kind B2 · utility
0Cited by
11References
16Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 11, 2012 |
| Grant date | Jul 4, 2017 |
| Priority date | — |
| Expiry date | Sep 8, 2033 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B5/22
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A near field communications apparatus comprising a signal source, a transmit antenna and means for detecting a change in the input impedance of the transmit antenna to detect the presence of a device which is compatible with the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.