Efficient wideband envelope tracking power amplifier
US10056864B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 12, 2017 |
| Grant date | Aug 21, 2018 |
| Priority date | — |
| Expiry date | Jan 12, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/462
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A wideband envelope tracking power amplifier includes a plurality of low dropout voltage regulators (LDOs) including at least a first LDO and a second LDO. The wideband envelope tracking power amplifier also includes a single-input-multi-output (SIMO) voltage supply to output a plurality of voltage signals at different voltage levels, the voltage levels including a highest voltage level and one or more voltage levels lower than the highest voltage level. The SIMO voltage supply connects a first of the plurality of voltage signals at a first voltage level to the first LDO to form at least a portion of an envelope tracking voltage level signal, and connects a second of the plurality of voltage signals at a second voltage level less than or equal to the first voltage level to the second LDO to form at least another portion of the envelope tracking voltage level signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.