Amplification system with differential envelope-based bias
US10454429B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 15, 2018 |
| Grant date | Oct 22, 2019 |
| Priority date | — |
| Expiry date | Dec 15, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/7206
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Disclosed herein are amplification systems that are dynamically biased based on a signal indicative of differential envelope of an input radio-frequency (RF) signal being amplified. The amplification systems include a cascode amplifier configured to amplify the RF signal to generate an output RF signal when one of the transistors of the cascode amplifier is biased by a combination of the input RF signal and a biasing signal while the other transistor of the cascode amplifier is biased by a processed differential envelope signal. The cascode amplifier also receives a combination of a processed differential envelope signal and a supply voltage to generate the output RF signal. The biasing signal can improve or enhance the linearity of amplification systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.