System and method for detecting the proximity of a body
US7511513B2 · kind B2 · utility
12Cited by
22References
10Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Feb 16, 2006 |
| Grant date | Mar 31, 2009 |
| Priority date | — |
| Expiry date | Mar 29, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/3838
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A system and method for sensing the proximity of an electronic device, in particular, a radio frequency mobile communication device such as a mobile telephone, wireless modem equipped portable computer, or the like to a body employs an antenna capable of altering its impedance for changing the amount of radio frequency electromagnetic energy reflected by the antenna when the antenna is in proximity to the body. The radio frequency electromagnetic energy reflected by the antenna is measured and used for determining proximity of the antenna to the body.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.