Portable and foldable radio terminal with multiple frequency antenna
US8131331B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 24, 2008 |
| Grant date | Mar 6, 2012 |
| Priority date | — |
| Expiry date | Feb 25, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04M1/0214
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A foldable portable radio device adapted to a plurality of frequency bands has a good antenna performance in all the use frequency bands even in both open and folded states. In the foldable portable radio device, a control section (24) controls switching means (20) to connect a sub-matching circuit (19) and a first circuit element (21) when a first use frequency band is used and further when the foldable portable radio device is in the open state and to connect the sub-matching circuit (19) and a second circuit element (22) when a first use frequency band is used and further when the foldable portable radio device is in the closed state, or when a second use frequency band is used irrespective of the open/closed state of the foldable portable radio device.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.