Multiple antenna diversity on mobile telephone handsets, PDAs and other electrically small radio platforms
US7245259B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 9, 2004 |
| Grant date | Jul 17, 2007 |
| Priority date | — |
| Expiry date | Feb 9, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q9/0435
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
There is disclosed an antenna device including a dielectric substrate having a first, upper surface and a second, lower surface, a conductive groundplane on the second surface or located between the first and second surfaces. At least two conductive feedlines are formed on the first surface and extend from feed points to predetermined radiating points at edge or corner parts of the first surface. The groundplane does not extend under the radiating points. The groundplane is configured as to extend between the radiating points and the feedlines are widened at the radiating points and/or are provided with discrete dielectric elements at the radiating points. The antenna device provides broadband performance and good diversity within a small space.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.