Power amplifying apparatus
US9748901B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2015 |
| Grant date | Aug 29, 2017 |
| Priority date | — |
| Expiry date | Jun 16, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/546
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A power amplifying apparatus includes a radio frequency (RF) power amplifier, a supply modulating unit, a phase shifting unit, and an envelope shaping unit. The RF power amplifier receives an input RF signal and outputs an amplified RF signal. The supply modulating unit provides the RF power amplifier with a supply voltage which varies with an original envelope of the input RF signal. The phase shifting unit receives a control signal and shifts a phase of the input RF signal to be inputted to the RF power amplifier by a shift amount which varies with the control signal. The envelope shaping unit receives the original envelope and provides the phase shifting unit with the control signal which varies with the original envelope.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.