H03F 1/3241
Using predistortion circuits
Official title: {using predistortion circuits (H03F1/3211, H03F1/3217 take precedence)}
H03F1/3241 (Using predistortion circuits) appears on 3,065 US grants and 2,768 published applications in this corpus.
Search patents in H03F- Granted patents
- 3,065
- Published applications
- 2,768
- Assignees
- 751
- Inventors
- 4,084
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 4 | 0 |
| 1979 | 3 | 0 |
| 1980 | 1 | 0 |
| 1981 | 4 | 0 |
| 1982 | 3 | 0 |
| 1983 | 7 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 8 | 0 |
| 1988 | 5 | 0 |
| 1989 | 11 | 0 |
| 1990 | 8 | 0 |
| 1991 | 17 | 0 |
| 1992 | 28 | 0 |
| 1993 | 20 | 0 |
| 1994 | 17 | 0 |
| 1995 | 14 | 0 |
| 1996 | 29 | 0 |
| 1997 | 27 | 0 |
| 1998 | 41 | 0 |
| 1999 | 47 | 0 |
| 2000 | 49 | 0 |
| 2001 | 66 | 17 |
| 2002 | 62 | 79 |
| 2003 | 65 | 85 |
| 2004 | 78 | 98 |
| 2005 | 71 | 123 |
| 2006 | 104 | 84 |
| 2007 | 82 | 111 |
| 2008 | 100 | 106 |
| 2009 | 78 | 91 |
| 2010 | 113 | 130 |
| 2011 | 119 | 91 |
| 2012 | 111 | 140 |
| 2013 | 158 | 153 |
| 2014 | 148 | 160 |
| 2015 | 190 | 177 |
| 2016 | 168 | 142 |
| 2017 | 173 | 120 |
| 2018 | 125 | 103 |
| 2019 | 114 | 98 |
| 2020 | 113 | 120 |
| 2021 | 97 | 104 |
| 2022 | 87 | 108 |
| 2023 | 60 | 94 |
| 2024 | 79 | 92 |
| 2025 | 88 | 84 |
| 2026 | 57 | 58 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03F 1/3247Using feedback acting on predistortion circuits1,805
- H03F 1/3258Based on polynomial terms437
- H03F 1/3282Acting on the phase and the amplitude of the input signal420
- H03F 1/3294Acting on the real and imaginary components of the input signal301
- H03F 1/3276Using the nonlinearity inherent to components224
- H03F 1/3252Using multiple parallel paths between input and output185
- H03F 1/3264In audio amplifiers142
Recent patents
- Apparatus and method for digital predistortion initialization of high-power amplifiers29 Sep 2026US 12,750,013 B2L3Harris Technologies, Inc.
- Digital signal compensation25 Aug 2026US 12,719,410 B2Telefonaktiebolaget LM Ericsson (publ)
- Systems and methods for multiband linearization architecture using kernel regression25 Aug 2026US 12,719,513 B2Telefonaktiebolaget LM Ericsson (publ)
- Neural volterra digital compensator with envelope neural network25 Aug 2026US 12,719,523 B2Analog Devices International Unlimited Company
- Transmission setting selection18 Aug 2026US 12,712,576 B2QUALCOMM Incorporated
- Methods and Apparatuses for Amplitude-Only Out-of-Band DPD1 Oct 2026US 2026/0303135 A1
- Power amplification and coupling circuit with transformer line24 Sep 2026US 2026/0291441 A1Jabil Inc.
- Apparatus and methods for delay calibration of load modulated power amplifiers and envelope trackers24 Sep 2026US 2026/0291446 A1Skyworks Solutions, Inc.
- Digital multi-band predistortion linearizer with subsampling feedback24 Sep 2026US 2026/0291532 A1Smart RF Inc.
- Adaptive array radio-frequency amplifiers10 Sep 2026US 2026/0269791 A1Skyworks Solutions, Inc.
Most cited
By later US patents
- Non-linear adaptive AM/AM and AM/PM pre-distortion compensation with time and temperature compensation for low power applications412US 7,215,716 B12007
- Waste energy control and management in power amplifier368US 5,568,088 AEricsson GE Mobile Communications Inc. · 1996
- Distortion compensation apparatus and distortion compensation method358US 9,397,619 B2Fujitsu Limited · 2016
- Method and apparatus for operating a radio-frequency power amplifier as a variable-class linear amplifier338US 6,043,707 AMotorola, Inc. · 2000
- Multi-mode amplifier system294US 7,043,213 B2Northrop Grumman Corporation · 2006