Amplifier circuit and method
US6933786B1 · kind B1 · utility
15Cited by
7References
20Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 15, 2002 |
| Grant date | Aug 23, 2005 |
| Priority date | — |
| Expiry date | May 15, 2022 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45702
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier system has a control circuit. An amplifier is coupled to the control circuit and has a controllable gain. A controllable input impedance circuit is coupled to the control circuit. When the gain of the amplifier is changed the controllable input impedance circuit's impedance is adjusted, so that the input impedance to the system remains essentially constant.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.