Control of power amplifiers in devices using transmit beamforming
US7899414B2 · kind B2 · utility
5Cited by
115References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 21, 2009 |
| Grant date | Mar 1, 2011 |
| Priority date | — |
| Expiry date | Jul 21, 2029 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B7/0669
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A radio transmitter and method controls efficiency of each of a plurality of power amplifiers that amplify a corresponding one of a plurality of radio frequency signals for a beamforming transmission by a corresponding one of a plurality of antennas. Each of the plurality of power amplifiers is controlled to operate with one or more operating parameters that optimize the efficiency for an output power level of corresponding ones of the radio frequency signals. Transmit weights for transmit signals are determined and updated on a per-packet basis.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.