Gain compression compensation circuit of radio frequency power amplifier
US11837998B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 30, 2020 |
| Grant date | Dec 5, 2023 |
| Priority date | — |
| Expiry date | Jun 1, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03F2200/99
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A gain compression compensation circuit of a radio frequency power amplifier includes: a low-pass filtering module configured to receive a part of radio frequency signals output from a first power amplification transistor and to filter, from the part of radio frequency signals, radio frequency signals with a frequency above a fundamental wave to obtain a filtered signal; and a rectifying module configured to receive the filtered signal output by the low-pass filtering module and to rectify the filtered signal to obtain a rectified current; and to output the rectified current to a bias transistor and superimpose the rectified current with a bias current Ibias to flow into the bias transistor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.