Apparatus and a method for amplifying a transmit signal
US9450553B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 11, 2015 |
| Grant date | Sep 20, 2016 |
| Priority date | — |
| Expiry date | Feb 11, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/102
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus for amplifying a transmit signal includes a power amplifier module arranged within a transmit path to be coupled to an antenna module. The power amplifier module is configured to amplify a transmit signal. Further, the apparatus includes a coupling module arranged between the power amplifier module and the antenna module. The coupling module is configured to provide a reverse feedback signal substantially generated by a part of the amplified transmit signal reflected by the antenna module. Further, the apparatus includes a determining module configured to determine a delay information on a delay between the transmit path and an envelope tracking path based on at least the reverse feedback signal. Additionally, the apparatus includes a power supply module arranged within the envelope tracking path configured to vary a power supply of the power amplifier module based on a transmit signal envelope information with a temporal alignment depending on the delay information.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.