H03F 2201/3227
Adaptive predistortion based on amplitude, envelope or power level feedback from the
Official title: Adaptive predistortion based on amplitude, envelope or power level feedback from the output of the main amplifier
H03F2201/3227 (Adaptive predistortion based on amplitude, envelope or power level feedback from the) appears on 110 US grants and 122 published applications in this corpus.
Search patents in H03F- Granted patents
- 110
- Published applications
- 122
- Assignees
- 66
- Inventors
- 228
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 1 |
| 2003 | 0 | 1 |
| 2004 | 1 | 0 |
| 2005 | 0 | 4 |
| 2006 | 3 | 3 |
| 2007 | 1 | 2 |
| 2008 | 5 | 1 |
| 2009 | 0 | 1 |
| 2010 | 0 | 1 |
| 2011 | 1 | 2 |
| 2012 | 1 | 1 |
| 2013 | 0 | 5 |
| 2014 | 9 | 14 |
| 2015 | 13 | 20 |
| 2016 | 16 | 9 |
| 2017 | 12 | 8 |
| 2018 | 7 | 8 |
| 2019 | 2 | 2 |
| 2020 | 6 | 13 |
| 2021 | 9 | 7 |
| 2022 | 4 | 2 |
| 2023 | 5 | 6 |
| 2024 | 7 | 2 |
| 2025 | 0 | 5 |
| 2026 | 2 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Circuit and method for compensating non-linearities16 Jun 2026US 12,658,898 B2Fraunhofer-Gesellschaft zur Förderung der angewandten Forschung e. V.
- Apparatus and method for controlling non-linear effect of power amplifier24 Feb 2026US 12,562,699 B2Samsung Electronics Co., Ltd.
- Predistortion circuit, method for generating a predistorted baseband signal, control circuit for a predistortion circuit, method to determine parameters for a predistortion circuit, and apparatus and method for predistorting a baseband signal24 Dec 2024US 12,176,934 B2Apple Inc.
- Hearing device comprising an amplifier system for minimizing variation in an acoustical signal caused by variation in gain of an amplifier26 Nov 2024US 12,155,998 B2Oticon A/S
- Envelope tracking system with modeling of a power amplifier supply voltage filter30 Jul 2024US 12,051,999 B2Skyworks Solutions, Inc.
- Semi-parametric digital pre-distortion18 Jun 2026US 2026/0171994 A1Avago Technologies International Sales Pte. Limited
- Methods and apparatuses for perfoming digital predistortion using a combination model16 Apr 2026US 2026/0106637 A1Telefonaktiebolaget LM Ericsson (publ)
- Pre-distorter for compensating power amplifier non-linearities2 Apr 2026US 2026/0095199 A1Nokia Solutions and Networks Oy
- Digital pre-distortion coefficient estimating device and operating method thereof12 Feb 2026US 2026/0045919 A1Samsung Electronic Co., Ltd.
- Selective activation of amplifying devices of a power amplification system4 Dec 2025US 2025/0373204 A1Nokia Solutions and Networks Oy
Most cited
By later US patents
- Distortion compensation apparatus and distortion compensation method358US 9,397,619 B2Fujitsu Limited · 2016
- System and method for digital memorized predistortion for wireless communication89US 6,985,704 B22006
- Envelope tracking system for MIMO85US 8,803,603 B2Nujira Limited · 2014
- Modulation device with input signal modification for correction of amplifier nonlinearities60US 5,093,637 AMitsubishi Denki Kabushiki Kaisha · 1992
- Adaptive equalization system for nonlinearities54US 4,329,655 ANippon Telegraph & Telephone Public Corporation · 1982