Supply modulator and wireless communication apparatus including the same
US11949384B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 6, 2021 |
| Grant date | Apr 2, 2024 |
| Priority date | — |
| Expiry date | Jul 1, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/451
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A supply modulator including a multiple output voltage regulator (MOVR) configured to output voltages in a discrete level-envelope tracking mode (DLETM) having different levels from each other respectively corresponding to reference output voltage signals, a switching regulator configured to output a switching regulator voltage, an output voltage being based on the switching regulator voltage and a selected voltage among the voltages in the DLETM and based on the switching regulator voltage in an average power tracking mode, a switching regulator controller configured to sense an output current of the MOVR to obtain a sensing value, and control the switching regulator based on the sensing value in the DLETM, a switch array comprising switches respectively corresponding to the voltages and configured to selectively connect the selected voltage to a power amplifier by performing a switching operation, and a switch controller configured to control the switching operation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.