Amplifier with active inductor
US7573332B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | Feb 28, 2008 |
| Grant date | Aug 11, 2009 |
| Priority date | — |
| Expiry date | Feb 28, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45652
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An amplifier comprises an amplifier stage and an active inductor. The amplifier stage has an input terminal and an output terminal. The active inductor comprises first and second resistors and first and second transistors. The first resistor has a first terminal coupled to the output terminal of the amplifier stage, and a second terminal. The second resistor has a first terminal coupled to the output terminal of the amplifier stage, and a second terminal. The first transistor has a first current electrode coupled to the second terminal of the first resistor, a control electrode coupled to receive a bias voltage, and a second current electrode. The second transistor has a first current electrode coupled to the second current electrode of the first transistor, a control electrode coupled to the second terminal of the second resistor, and a second current electrode coupled to a first power supply voltage terminal.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.