H03F 1/0233
By using a signal derived from the output signal
Official title: {by using a signal derived from the output signal, e.g. bootstrapping the voltage supply}
H03F1/0233 (By using a signal derived from the output signal) appears on 686 US grants and 694 published applications in this corpus.
Search patents in H03F- Granted patents
- 686
- Published applications
- 694
- Assignees
- 259
- Inventors
- 1,152
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 2 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 8 | 0 |
| 1996 | 6 | 0 |
| 1997 | 3 | 0 |
| 1998 | 6 | 0 |
| 1999 | 3 | 0 |
| 2000 | 8 | 0 |
| 2001 | 4 | 2 |
| 2002 | 4 | 5 |
| 2003 | 9 | 3 |
| 2004 | 9 | 11 |
| 2005 | 5 | 10 |
| 2006 | 11 | 18 |
| 2007 | 11 | 31 |
| 2008 | 11 | 9 |
| 2009 | 12 | 15 |
| 2010 | 13 | 13 |
| 2011 | 18 | 15 |
| 2012 | 20 | 18 |
| 2013 | 25 | 22 |
| 2014 | 27 | 39 |
| 2015 | 33 | 48 |
| 2016 | 49 | 33 |
| 2017 | 45 | 36 |
| 2018 | 41 | 28 |
| 2019 | 33 | 38 |
| 2020 | 38 | 47 |
| 2021 | 28 | 42 |
| 2022 | 33 | 59 |
| 2023 | 35 | 39 |
| 2024 | 43 | 48 |
| 2025 | 44 | 40 |
| 2026 | 23 | 25 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Receiver circuit, corresponding system and method29 Sep 2026US 12,750,009 B2STMicroelectronics International N. V.
- Transmit/receive (TRx) interface for Doherty operation22 Sep 2026US 12,744,495 B2QUALCOMM Incorporated
- Methods and apparatus to structure envelope detector circuitry for on-off keying modulation11 Aug 2026US 12,706,789 B2Texas Instruments Incorporated
- Power supply circuit for power amplifier and communication apparatus4 Aug 2026US 12,700,831 B2Huawei Technologies Co., Ltd.
- Power amplifier systems with frequency response compensation28 Jul 2026US 12,695,432 B2Skyworks Solutions, Inc.
- 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.
- Single-phase differential conversion circuit24 Sep 2026US 2026/0291440 A1NTT, Inc.
- Distributed power management circuit27 Aug 2026US 2026/0254411 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
- Current modulator with dynamic amplifier impedance compensation183US 6,566,944 B1Ericsson Inc. · 2003
- Method and apparatus for amplifying a signal177US 6,020,787 AMotorola, Inc. · 2000
- Class resonant-H electrosurgical generators156US 9,705,456 B2Covidien LP · 2017
- Method and system for providing power management in a radio frequency power amplifier using adaptive envelope tracking153US 6,914,487 B1National Semiconductor Corporation · 2005