Closed-loop adaptive power control for adjusting bandwidth in a mobile handset transmitter
US8606311B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 7, 2009 |
| Grant date | Dec 10, 2013 |
| Priority date | — |
| Expiry date | Jul 26, 2030 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04W52/226
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A mobile handset is arranged with an adaptive power controller to controllably adjust transmit power. The adaptive power controller is coupled to a power amplifier module to form a closed feedback loop. The adaptive power control module includes a first shifter, a first sealer, an accumulator and a hold element. The first shifter and first sealer receive respective bandwidth control signals and an error signal. The first shifter and first sealer generate a modified error signal that is forwarded to and filtered by the accumulator and the hold element to generate a power control signal. The power control signal, which is generated the radio frequency subsystem of the handset can quickly and accurately track rapid changes in transmit power.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.