Mobile wireless communications device having diversity antenna system and related methods
US8106838B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 5, 2009 |
| Grant date | Jan 31, 2012 |
| Priority date | — |
| Expiry date | Jan 16, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01Q21/30
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A mobile wireless communications device has a portable handheld housing. A circuit board is carried by the portable handheld housing. RP circuitry is carried by the circuit board. A diversity antenna and main antenna are carried by the portable handheld housing and coupled to the RF circuitry and operative together. The RF circuitry tunes the diversity antenna into a diversity communications frequency band to achieve a diversity mode of operation with the main antenna and tunes the diversity antenna into a non-diversity communications frequency band when cross-coupling has occurred from the diversity antenna to the main antenna when operating in the diversity communications frequency band. A switch is carried by the portable handheld housing and connected to the RF circuitry and coupled between the diversity and main antennae and disconnects the diversity antenna when operating in the non-diversity band to prevent cross-coupling from the diversity antenna to the main antenna.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.