H03F 1/3247
Using feedback acting on predistortion circuits
Official title: {using feedback acting on predistortion circuits (H03F1/3264 takes precedence)}
H03F1/3247 (Using feedback acting on predistortion circuits) appears on 1,805 US grants and 1,724 published applications in this corpus.
Search patents in H03F- Granted patents
- 1,805
- Published applications
- 1,724
- Assignees
- 474
- Inventors
- 2,501
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 6 | 0 |
| 1992 | 17 | 0 |
| 1993 | 5 | 0 |
| 1994 | 4 | 0 |
| 1995 | 9 | 0 |
| 1996 | 10 | 0 |
| 1997 | 9 | 0 |
| 1998 | 10 | 0 |
| 1999 | 26 | 0 |
| 2000 | 20 | 0 |
| 2001 | 29 | 11 |
| 2002 | 35 | 49 |
| 2003 | 35 | 49 |
| 2004 | 43 | 58 |
| 2005 | 44 | 85 |
| 2006 | 67 | 41 |
| 2007 | 51 | 57 |
| 2008 | 63 | 61 |
| 2009 | 41 | 49 |
| 2010 | 63 | 88 |
| 2011 | 75 | 74 |
| 2012 | 74 | 109 |
| 2013 | 125 | 106 |
| 2014 | 107 | 100 |
| 2015 | 124 | 101 |
| 2016 | 99 | 78 |
| 2017 | 95 | 77 |
| 2018 | 78 | 66 |
| 2019 | 65 | 53 |
| 2020 | 70 | 80 |
| 2021 | 60 | 59 |
| 2022 | 56 | 65 |
| 2023 | 41 | 66 |
| 2024 | 46 | 63 |
| 2025 | 54 | 44 |
| 2026 | 36 | 35 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
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)
- Transmission setting selection18 Aug 2026US 12,712,576 B2QUALCOMM Incorporated
- Constant VDS1 bias control for stacked transistor configuration11 Aug 2026US 12,706,571 B2pSemi Corporation
- 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.
- Information processing device, communication device, and information processing method10 Sep 2026US 2026/0269859 A11FINITY Inc.
- Digital pre-distortion calibration of a radio frequency power amplifier20 Aug 2026US 2026/0246487 A1Cypress Semiconductor Corporation
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
- 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
- Linear transmitter using predistortion283US 5,732,333 AGlenayre Electronics, Inc. · 1998
- Digital predistortion methods for wideband amplifiers282US 6,587,514 B1PMC-Sierra, Inc. · 2003