H03F 1/0227
Using supply converters
Official title: {using supply converters}
H03F1/0227 (Using supply converters) appears on 1,112 US grants and 1,217 published applications in this corpus.
Search patents in H03F- Granted patents
- 1,112
- Published applications
- 1,217
- Assignees
- 251
- Inventors
- 1,298
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 1 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 2 | 0 |
| 1993 | 2 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 5 | 2 |
| 2002 | 6 | 7 |
| 2003 | 10 | 7 |
| 2004 | 10 | 14 |
| 2005 | 6 | 13 |
| 2006 | 25 | 17 |
| 2007 | 13 | 25 |
| 2008 | 12 | 22 |
| 2009 | 10 | 16 |
| 2010 | 23 | 26 |
| 2011 | 32 | 30 |
| 2012 | 36 | 58 |
| 2013 | 29 | 63 |
| 2014 | 54 | 73 |
| 2015 | 86 | 80 |
| 2016 | 77 | 79 |
| 2017 | 94 | 67 |
| 2018 | 81 | 66 |
| 2019 | 69 | 62 |
| 2020 | 77 | 79 |
| 2021 | 55 | 73 |
| 2022 | 50 | 76 |
| 2023 | 56 | 86 |
| 2024 | 70 | 70 |
| 2025 | 60 | 61 |
| 2026 | 35 | 45 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Power amplifier6 Oct 2026US 12,756,362 B2Himax Technologies Limited
- Progressive envelope tracking with delay compensation15 Sep 2026US 12,738,894 B2Qorvo US, Inc.
- Power supply circuit, power supply method, audio power amplifier and integrated circuit18 Aug 2026US 12,712,493 B2
- Constant VDS1 bias control for stacked transistor configuration11 Aug 2026US 12,706,571 B2pSemi Corporation
- Power supply circuit for power amplifier and communication apparatus4 Aug 2026US 12,700,831 B2Huawei Technologies Co., Ltd.
- Apparatus and methods for delay calibration of load modulated power amplifiers and envelope trackers24 Sep 2026US 2026/0291446 A1Skyworks Solutions, Inc.
- Switching amplifiers24 Sep 2026US 2026/0291452 A1Cirrus Logic International Semiconductor Ltd.
- Tracker circuit and radio frequency circuit10 Sep 2026US 2026/0269787 A1Murata Manufacturing Co., Ltd.
- Tracker circuit10 Sep 2026US 2026/0269788 A1Murata Manufacturing Co., Ltd.
- Distributed power management circuit27 Aug 2026US 2026/0254411 A1Qorvo US, Inc.
Most cited
By later US patents
- 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
- Method, device, phone and base station for providing envelope-following for variable envelope radio frequency signals199US 6,141,541 AMotorola, Inc. · 2000
- Method and apparatus for linear amplification of a radio frequency signal198US 6,449,465 B1Motorola, Inc. · 2002