H03F 3/604
Using fet's
Official title: {using FET's}
H03F3/604 (Using fet's) appears on 330 US grants and 264 published applications in this corpus.
Search patents in H03F- Granted patents
- 330
- Published applications
- 264
- Assignees
- 164
- Inventors
- 597
- Latest grant
- 23 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 5 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 5 | 0 |
| 1998 | 6 | 0 |
| 1999 | 12 | 0 |
| 2000 | 11 | 0 |
| 2001 | 11 | 2 |
| 2002 | 9 | 15 |
| 2003 | 5 | 8 |
| 2004 | 11 | 6 |
| 2005 | 7 | 9 |
| 2006 | 9 | 21 |
| 2007 | 14 | 7 |
| 2008 | 13 | 15 |
| 2009 | 9 | 10 |
| 2010 | 16 | 12 |
| 2011 | 11 | 8 |
| 2012 | 12 | 7 |
| 2013 | 13 | 5 |
| 2014 | 7 | 7 |
| 2015 | 8 | 13 |
| 2016 | 9 | 9 |
| 2017 | 12 | 15 |
| 2018 | 12 | 14 |
| 2019 | 12 | 7 |
| 2020 | 12 | 11 |
| 2021 | 9 | 15 |
| 2022 | 12 | 11 |
| 2023 | 7 | 12 |
| 2024 | 6 | 10 |
| 2025 | 8 | 12 |
| 2026 | 9 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Power reconfigurable power amplifier23 Jun 2026US 12,665,559 B2Qorvo US, Inc.
- Apparatus and methods for amplifier linearization9 Jun 2026US 12,652,004 B2Skyworks Solutions, Inc.
- RF amplifier circuit arrangement and electronic device5 May 2026US 12,620,948 B2Rohde & Schwarz GmbH & Co.KG
- Amplifier circuit arrangement and electronic device5 May 2026US 12,620,949 B2Rohde & Schwarz GmbH & Co.KG
- Doherty amplifier5 May 2026US 12,622,281 B2Mitsubishi Electric Corporation
- Multistage amplifier8 Oct 2026US 2026/0312542 A1NTT, Inc.
- Power amplification system, radio frequency transmission system, and signal transmission apparatus4 Jun 2026US 2026/0155799 A1
- Doherty power amplifier with harmonic frequency resonance circuit coupled to a reconfigurable impedance inverter circuit26 Mar 2026US 2026/0088770 A1NXP USA, Inc.
- Amplifying circuit11 Dec 2025US 2025/0379551 A1Sumitomo Electric Industries, Ltd.
- Doherty amplifier, output network, and design method of doherty amplifier27 Nov 2025US 2025/0364950 A1Suzhou Watech Electronics Co., Ltd.
Most cited
By later US patents
- High power high impedance microwave devices for power applications154US 6,137,367 AAMCOM Communications, Inc. · 2000
- Power amplifier having monitoring and circuit protection104US 6,188,277 B1Harris Corporation · 2001
- Systems and methods for power amplifiers with voltage boosting multi-primary transformers102US 7,880,547 B2Georgia Tech Research Corporation · 2011
- Variable power amplifier98US 4,439,744 ARCA Corporation · 1984
- High frequency power amplifier with high efficiency and low distortion95US 5,264,807 AFujitsu Limited · 1993