Amplifier circuit
US7612611B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 2008 |
| Grant date | Nov 3, 2009 |
| Priority date | — |
| Expiry date | Mar 28, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/492
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier circuit for amplifying a high-frequency input signal comprises an amplifier stage, which amplifies the high-frequency input signal as a function of an operating point of the amplifier stage and generates an operating point-dependent signal, an observer stage, which replicates the amplifier stage and generates an observation signal, a regulator, which is supplied with the operating point-dependent signal and the observation signal, and an control element, which influences the operating point of the amplifier stage and is driven by the regulator, whereby the regulator drives the control element in such a way that the operating point of the amplifier stage is substantially independent of a level of the high-frequency input signal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.