Multi-antenna wireless device with power amplifiers having different characteristics
US8670797B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 4, 2011 |
| Grant date | Mar 11, 2014 |
| Priority date | — |
| Expiry date | Jan 5, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/0483
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A wireless device with power amplifiers having different characteristics to support transmission on multiple antennas is disclosed. These power amplifiers may have different gain, different maximum output power levels, etc. in order to meet requirements of different wireless systems. In an exemplary design, an apparatus includes first and second power amplifiers having different characteristics. The first power amplifier amplifies a first input signal and provides a first output signal for a first antenna. The second power amplifier amplifies the first input signal or a second input signal and provides a second output signal for a second antenna, e.g., in a MIMO mode or a transmit diversity mode. Only the first or second power amplifier amplifies another input signal and provides another output signal to the first antenna, e.g., in a CDMA mode or a GSM mode.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.