Active cascode amplifier with an amplitude limiter
US6590456B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 17, 2001 |
| Grant date | Jul 8, 2003 |
| Priority date | — |
| Expiry date | Jul 17, 2021 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F1/223
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
An active cascode amplifier circuit which includes an active cascode amplifier and an amplitude limiter. The active cascode amplifier includes an input stage, an output stage and an auxiliary amplifier and receives in a voltage input signal and outputs a voltage output signal wherein the cascode amplifier amplifies the input voltage signal. The auxiliary amplifier is provided within the circuit to increase the gain of the cascode amplifier and has an associated output. When the input stage shuts off, due to a decrease in the input voltage signal, the amplitude limiter becomes active and holds the voltage at the output of the auxiliary amplifier to a preset voltage in order to decrease the recovery time for turning the output stage on when the input voltage increases and turns the input stage on.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.