Apparatus and method for controlling operation of an amplifier device when supply voltage varies
US7061323B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 19, 2004 |
| Grant date | Jun 13, 2006 |
| Priority date | — |
| Expiry date | Nov 30, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45702
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An apparatus for controlling operation of an amplifier device when supply voltage provided to the amplifier device varies at an input voltage supply locus. The amplifier device has an operating parameter varying in generally direct proportion with the supply voltage. The apparatus includes: (a) a reference parameter supply providing a reference parameter; (b) a modeling circuit coupled with the input voltage supply locus that models the amplifier device; (c) a comparing circuit coupled with the modeling circuit and the reference parameter supply that compares a model operating parameter from the modeling circuit and the reference parameter and provides a control signal to the modeling circuit and the amplifier device in response to the comparing; the control signal alters operation of the modeling circuit and the amplifier device to reduce variance between the reference parameter and the model operating parameter from a predetermined relationship.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.