Low power large signal RF tuned buffer amplifier
US6781445B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Apr 13, 2001 |
| Grant date | Aug 24, 2004 |
| Priority date | — |
| Expiry date | Apr 13, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2203/45714
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for buffering RF signals. A method includes receiving an input signal, wherein the input signal alternates between a first polarity and a second polarity. From the input signal, a first current is generated, wherein the first current is proportional to the input signal when the input signal has the first polarity, and approximately equal to zero when the input signal has the second polarity, and a second current is generated, wherein the second current is proportional to the input signal when the input signal has the second polarity, and approximately equal to zero when the input signal has the first polarity. A third current is generated proportional to the first current, and a fourth current is generated proportional to the second current. The first and fourth currents are applied to a first terminal of an inductor; and the second and third currents are applied to a second terminal of the inductor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.