Radio frequency power amplifier circuit and gain control method
US11757419B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 29, 2020 |
| Grant date | Sep 12, 2023 |
| Priority date | — |
| Expiry date | May 20, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03G2201/307
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A radio frequency power amplifier circuit includes a controllable attenuation circuit, an input matching circuit, a drive amplification circuit, an inter-stage matching circuit, a power amplification circuit and an output matching circuit connected in sequence, and respectively configured to switch between a negative gain mode and a non-negative gain mode of the radio frequency power amplifier circuit based on a mode control signal, match the impedance between the controllable attenuation circuit and the drive amplification circuit, amplify a signal, configured to match the impedance between the drive amplification circuit and the power amplification circuit, amplify a signal, and match the impedance between the radio frequency power amplifier circuit and a post-stage circuit. A feedback circuit is connected across the drive amplification circuit, and is configured to adjust a gain.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.