System and method for detecting the proximity of a body
US7053629B2 · kind B2 · utility
37Cited by
20References
39Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Sep 28, 2001 |
| Grant date | May 30, 2006 |
| Priority date | — |
| Expiry date | Sep 28, 2021 |
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.