H03F 1/0288
Using a main and one or several auxiliary peaking amplifiers whereby the
Official title: {using a main and one or several auxiliary peaking amplifiers whereby the load is connected to the main amplifier using an impedance inverter, e.g. Doherty amplifiers}
H03F1/0288 (Using a main and one or several auxiliary peaking amplifiers whereby the) appears on 1,108 US grants and 1,436 published applications in this corpus.
Search patents in H03F- Granted patents
- 1,108
- Published applications
- 1,436
- Assignees
- 291
- Inventors
- 1,548
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1991 | 2 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 3 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 3 | 0 |
| 1999 | 6 | 0 |
| 2000 | 4 | 0 |
| 2001 | 6 | 1 |
| 2002 | 8 | 4 |
| 2003 | 2 | 7 |
| 2004 | 6 | 19 |
| 2005 | 10 | 10 |
| 2006 | 17 | 23 |
| 2007 | 18 | 17 |
| 2008 | 18 | 19 |
| 2009 | 14 | 27 |
| 2010 | 23 | 27 |
| 2011 | 19 | 29 |
| 2012 | 27 | 34 |
| 2013 | 44 | 59 |
| 2014 | 47 | 71 |
| 2015 | 53 | 59 |
| 2016 | 64 | 87 |
| 2017 | 80 | 58 |
| 2018 | 73 | 84 |
| 2019 | 84 | 76 |
| 2020 | 83 | 83 |
| 2021 | 68 | 100 |
| 2022 | 62 | 88 |
| 2023 | 48 | 102 |
| 2024 | 66 | 121 |
| 2025 | 76 | 131 |
| 2026 | 73 | 100 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Doherty amplifier system6 Oct 2026US 12,756,363 B2Qorvo US, Inc.
- Group III nitride Doherty amplifier using different epitaxial structures29 Sep 2026US 12,750,010 B2MACOM Technology Solutions Holdings, Inc.
- Radio-frequency amplifiers with automatic bias compensation15 Sep 2026US 12,738,895 B2NXP B. V.
- Power amplifier device having dies with elongated bondpads connected through a device substrate15 Sep 2026US 12,738,906 B2NXP USA, Inc.
- RF power amplifiers and electronic device1 Sep 2026US 12,726,156 B2Smarter Microelectronics (Shanghai) Co., Ltd.
- Doherty power amplifiers with controllable capacitor for tuning harmonic termination and inverter8 Oct 2026US 2026/0312543 A1Skyworks Solutions, Inc.
- Power combined power amplifier1 Oct 2026US 2026/0303025 A1QUALCOMM Incorporated
- Wideband doherty power amplifier1 Oct 2026US 2026/0303026 A1Indian Institute of Technology Roorkee
- Doherty amplifier circuit1 Oct 2026US 2026/0303027 A1Murata Manufacturing Co., Ltd.
- Radio-frequency module, communication apparatus, and control method1 Oct 2026US 2026/0303028 A1Murata Manufacturing Co., Ltd.
Most cited
By later US patents
- Efficient parallel-stage power amplifier252US 5,872,481 AQUALCOMM Incorporated · 1999
- Multi-stage high efficiency linear power amplifier and method therefor219US 5,786,727 AMotorola, Inc. · 1998
- Bias circuit for a power amplifier179US 5,757,229 AMotorola, Inc. · 1998
- High efficiency power amplifier168US 5,880,633 AMotorola, Inc. · 1999
- Multi-mode multi-amplifier architecture158US 6,853,244 B2Northrop Grumman Corporation · 2005