H03F 1/0216
Continuous control
Official title: {Continuous control}
H03F1/0216 (Continuous control) appears on 2,537 US grants and 2,648 published applications in this corpus.
Search patents in H03F- Granted patents
- 2,537
- Published applications
- 2,648
- Assignees
- 574
- Inventors
- 3,197
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 2 | 0 |
| 1984 | 7 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 4 | 0 |
| 1988 | 4 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 8 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 12 | 0 |
| 1996 | 13 | 0 |
| 1997 | 4 | 0 |
| 1998 | 13 | 0 |
| 1999 | 18 | 0 |
| 2000 | 30 | 0 |
| 2001 | 15 | 6 |
| 2002 | 23 | 21 |
| 2003 | 29 | 14 |
| 2004 | 30 | 36 |
| 2005 | 20 | 41 |
| 2006 | 46 | 46 |
| 2007 | 36 | 61 |
| 2008 | 35 | 48 |
| 2009 | 32 | 49 |
| 2010 | 54 | 56 |
| 2011 | 57 | 61 |
| 2012 | 80 | 107 |
| 2013 | 83 | 120 |
| 2014 | 119 | 131 |
| 2015 | 148 | 172 |
| 2016 | 176 | 163 |
| 2017 | 185 | 152 |
| 2018 | 179 | 156 |
| 2019 | 151 | 140 |
| 2020 | 162 | 178 |
| 2021 | 117 | 147 |
| 2022 | 121 | 170 |
| 2023 | 123 | 179 |
| 2024 | 133 | 160 |
| 2025 | 139 | 132 |
| 2026 | 97 | 102 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Power amplifier6 Oct 2026US 12,756,362 B2Himax Technologies Limited
- Receiver circuit, corresponding system and method29 Sep 2026US 12,750,009 B2STMicroelectronics International N. V.
- Amplifier with temperature dependent gain and temperature compensated bandwidth29 Sep 2026US 12,750,011 B2STMicroelectronics International N. V.
- Transmit/receive (TRx) interface for Doherty operation22 Sep 2026US 12,744,495 B2QUALCOMM Incorporated
- Progressive envelope tracking with delay compensation15 Sep 2026US 12,738,894 B2Qorvo US, Inc.
- Audio envelope tracking for controlling a tracking power supply8 Oct 2026US 2026/0312540 A1Harman Becker Automotive Systems GmbH
- High-frequency power supply device8 Oct 2026US 2026/0312541 A1Kyosan Electric Mfg. Co., Ltd.
- Multistage amplifier8 Oct 2026US 2026/0312542 A1NTT, Inc.
- Power amplifier systems with load control8 Oct 2026US 2026/0312548 A1Skyworks Solutions, Inc.
- Adaptive biasing in a power amplifier circuit1 Oct 2026US 2026/0303023 A1Qorvo US, Inc.
Most cited
By later US patents
- 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
- Power- conserving drive-modulation method for envelope-elimination-and-restoration (EER) transmitters243US 6,256,482 B12001
- Buck or boost power converter211US 6,348,781 B1Motorola, Inc. · 2002
- Apparatus and methods for envelope tracking202US 8,718,188 B2Skyworks Solutions, Inc. · 2014