Dual-feedback amplifier limiter
US10581383B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 17, 2015 |
| Grant date | Mar 3, 2020 |
| Priority date | — |
| Expiry date | Dec 17, 2035 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/474
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A method and apparatus for a dual-feedback, amplifier limiter for providing a conditioned radio-frequency signal. The dual-feedback, amplifier limiter includes an input that receives a radio-frequency signal and a stacked amplifier including an input node coupled to the input, an output node, a first transistor configured as a common-base amplifier, and a second transistor configured as a common-emitter amplifier. The dual-feedback, amplifier limiter further includes an output coupled to the output node of the stacked amplifier. The output provides the conditioned radio-frequency signal. The dual-feedback, amplifier limiter further includes a radio-frequency feedback circuit coupled to the stacked amplifier. The radio-frequency feedback circuit includes a passive radio-frequency dependent reactive element in series with a radio-frequency feedback circuit resistor. The dual-feedback, amplifier limiter further includes an envelope control feedback circuit coupled to the stacked amplifier and including a current mirror and a reactive element loop filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.