Variable gain amplifier with gain-based compensation
US10263582B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 23, 2018 |
| Grant date | Apr 16, 2019 |
| Priority date | — |
| Expiry date | Feb 23, 2038 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G3/3031
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present disclosure describes variable gain amplifiers with gain-based compensation. In some embodiments, a variable gain amplifier (VGA) includes a gain stage, an output stage, a compensation stage, and a capacitor coupled between respective outputs of the gain stage and compensation stage. A gain of the VGA is configured, based on a gain setting, to amplify signals received by the variable gain amplifier. A gain of the compensation stage is configured, based on the gain setting, to alter an effective capacitance of the capacitor, which is applied to the output of the gain stage for compensation of the VGA. By altering the effective capacitance based on the gain setting of the VGA, compensation capacitance is adjusted continuously with changes in the gain setting and at a similar resolution. In various embodiments, the continuous adjustment of the compensation capacitance across different gain levels prevents discontinuities in amplifier compensation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.