Radiation redirecting external case for portable communication device and antenna embedded in battery of portable communication device
US8208980B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 6, 2009 |
| Grant date | Jun 26, 2012 |
| Priority date | — |
| Expiry date | Jul 23, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K9/0056
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An advanced antenna or set of antennae for a wireless device is provided by embedding the antennae into the battery case or generally the largest surface area of a wireless phone. The antenna connections are made through the battery's connections to the wireless device. The antenna design can be compact and located in any area of the battery. The antenna design can be thin and flat, located at the back surface of the battery or the large rear surface of a wireless phone, facing away from the user. An RF shielding device can be embedded into the battery and configured in relation to the antenna such that the RF field intensity and the consequent specific absorption rate for the user is lowered while the outgoing signals of the wireless device remain fully adequate for the function of the wireless device. This feature is preserved for a multi-band operation because a digital phase shifter is used between two radiating antennae. An external case is used as a complement to the wireless phone to provide additional antennae, power and capability.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.