H03F 3/602
Combinations of several amplifiers
Official title: {Combinations of several amplifiers}
H03F3/602 (Combinations of several amplifiers) appears on 1,284 US grants and 1,127 published applications in this corpus.
Search patents in H03F- Granted patents
- 1,284
- Published applications
- 1,127
- Assignees
- 441
- Inventors
- 2,115
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 9 | 0 |
| 1982 | 1 | 0 |
| 1983 | 6 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 2 | 0 |
| 1987 | 11 | 0 |
| 1988 | 8 | 0 |
| 1989 | 6 | 0 |
| 1990 | 9 | 0 |
| 1991 | 14 | 0 |
| 1992 | 23 | 0 |
| 1993 | 15 | 0 |
| 1994 | 7 | 0 |
| 1995 | 10 | 0 |
| 1996 | 10 | 0 |
| 1997 | 15 | 0 |
| 1998 | 20 | 0 |
| 1999 | 27 | 0 |
| 2000 | 25 | 0 |
| 2001 | 32 | 8 |
| 2002 | 23 | 30 |
| 2003 | 27 | 34 |
| 2004 | 42 | 48 |
| 2005 | 27 | 28 |
| 2006 | 42 | 51 |
| 2007 | 46 | 35 |
| 2008 | 35 | 48 |
| 2009 | 43 | 45 |
| 2010 | 44 | 42 |
| 2011 | 36 | 37 |
| 2012 | 39 | 57 |
| 2013 | 36 | 60 |
| 2014 | 69 | 50 |
| 2015 | 68 | 49 |
| 2016 | 50 | 57 |
| 2017 | 52 | 38 |
| 2018 | 44 | 53 |
| 2019 | 49 | 37 |
| 2020 | 48 | 45 |
| 2021 | 39 | 57 |
| 2022 | 41 | 38 |
| 2023 | 28 | 43 |
| 2024 | 18 | 46 |
| 2025 | 34 | 52 |
| 2026 | 35 | 39 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Doherty amplifier system6 Oct 2026US 12,756,363 B2Qorvo US, Inc.
- Method for supplying a laser or plasma with power, and plasma or laser system29 Sep 2026US 12,749,653 B2Trumpf HüTtinger GmbH + Co. KG
- Stacked coaxial cavity combiner for combining a plurality of amplifiers, the combiner having an outer conductor wall and plural inner conductor blocks18 Aug 2026US 12,712,507 B2Korea Institute of Fusion Energy
- RF amplifier11 Aug 2026US 12,706,575 B2Infineon Technologies AG
- Power amplifier4 Aug 2026US 12,700,833 B2Murata Manufacturing Co., Ltd.
- Multistage amplifier8 Oct 2026US 2026/0312542 A1NTT, Inc.
- Power amplifier using coupler and electronic device including the same24 Sep 2026US 2026/0291443 A1Research & Business Foundation Sungkyunkwan University
- Planar solid state power amplifier architecture with integrated waveguide transitions, heat sink and combiner17 Sep 2026US 2026/0280505 A1Qorvo US, Inc.
- Semiconductor device and method thereof3 Sep 2026US 2026/0261247 A1Renesas Electronics Corporation
- Doherty power amplifier and electronic device comprising same20 Aug 2026US 2026/0246429 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Waste energy control and management in power amplifier368US 5,568,088 AEricsson GE Mobile Communications Inc. · 1996
- High efficiency bi-directional spatial power combiner amplifier305US 5,214,394 ARockwell International Corporation · 1993
- Efficient parallel-stage power amplifier252US 5,872,481 AQUALCOMM Incorporated · 1999
- Modular microwave power combiner211US 4,175,257 AUnited Technologies Corporation · 1979
- Power amplifier output module for dual-mode digital systems195US 5,973,568 AMotorola, Inc. · 1999