Current reuse type field effect transistor amplifier
US11012036B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Mar 28, 2017 |
| Grant date | May 18, 2021 |
| Priority date | — |
| Expiry date | Mar 28, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/451
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A current reuse type FET amplifier according to the present invention has a capacitance provided between a drain of a first FET in a first stage and a gate of a second FET in a next stage, electrically separates a gate voltage of the second FET from a drain voltage of the first FET, and includes a control circuit controlling the gate voltage of the first FET and the gate voltage of the second FET so that a variation of a drain current of the second FET and a variation of a drain voltage of the first FET are reduced in accordance with a variation of a saturation current Idss of the FET. Furthermore, the current reuse type FET amplifier according to the present invention uses only a depression mode FET to provide a circuit configuration operable with a positive single power source.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.