H03F 1/3205
In field-effect transistor amplifiers
Official title: {in field-effect transistor amplifiers}
H03F1/3205 (In field-effect transistor amplifiers) appears on 675 US grants and 686 published applications in this corpus.
Search patents in H03F- Granted patents
- 675
- Published applications
- 686
- Assignees
- 275
- Inventors
- 1,212
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 1 | 0 |
| 1988 | 4 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 3 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 1 | 0 |
| 1998 | 4 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 1 |
| 2002 | 7 | 8 |
| 2003 | 9 | 8 |
| 2004 | 9 | 10 |
| 2005 | 8 | 11 |
| 2006 | 11 | 15 |
| 2007 | 9 | 33 |
| 2008 | 19 | 17 |
| 2009 | 23 | 22 |
| 2010 | 17 | 16 |
| 2011 | 26 | 14 |
| 2012 | 21 | 19 |
| 2013 | 20 | 23 |
| 2014 | 20 | 26 |
| 2015 | 39 | 33 |
| 2016 | 32 | 33 |
| 2017 | 42 | 49 |
| 2018 | 47 | 44 |
| 2019 | 50 | 46 |
| 2020 | 42 | 49 |
| 2021 | 39 | 37 |
| 2022 | 41 | 37 |
| 2023 | 20 | 41 |
| 2024 | 31 | 36 |
| 2025 | 30 | 36 |
| 2026 | 24 | 22 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Tunable effective inductance for multi-gain LNA with inductive source degeneration29 Sep 2026US 12,750,026 B2pSemi Corporation
- Broadband LNA structure using offset active coupled segments8 Sep 2026US 12,732,139 B2Qorvo US, Inc.
- Low noise amplifier with post distortion circuit25 Aug 2026US 12,719,414 B2Northrop Grumman Systems Corporation
- Intermodulation distortion mitigation25 Aug 2026US 12,719,425 B2Apple Inc.
- Field effect transistor (FET) transconductance device with varying gate lengths25 Aug 2026US 12,719,426 B2Qorvo US, Inc.
- Differential-to-single-ended active converter13 Aug 2026US 2026/0238207 A1QUALCOMM Incorporated
- Polar Amplifier with Dynamic Duty Cycling16 Jul 2026US 2026/0205070 A1Apple Inc.
- Variable gain low noise amplifier and method for controlling gain of variable gain low noise amplifier9 Jul 2026US 2026/0196977 A1Mediatek Inc.
- Amplification circuit for operation in multiple gain modes2 Jul 2026US 2026/0189194 A1RichWave Technology Corp.
- Second harmonic (hd2) and distortion compensation for a power amplifier25 Jun 2026US 2026/0180526 A1NXP USA, Inc.
Most cited
By later US patents
- High-frequency amplifier, transmitting device and receiving device216US 5,903,854 ASony Corporation · 1999
- Systems and methods of RF power transmission, modulation, and amplification, including transfer function embodiments90US 7,421,036 B2ParkerVision, Inc. · 2008
- Methods and apparatus for substantially reducing nonlinear distortion using multiple nonlinear devices83US 6,853,248 B2The University of North Carolina at Charlotte · 2005
- Method and apparatus for cancellation of third order intermodulation distortion and other nonlinearities79US 6,794,938 B2The University of North Carolina at Charlotte · 2004
- Methods and apparatus for using Taylor series expansion concepts to substantially reduce nonlinear distortion77US 6,853,247 B2The University of North Carolina at Charlotte · 2005