H03F 1/18
By use of distributed coupling , i.e. distributed amplifiers
Official title: by use of distributed coupling {, i.e. distributed amplifiers (distributed amplifiers using coupling networks with distributed constants H03F3/605)}
H03F1/18 (By use of distributed coupling , i.e. distributed amplifiers) appears on 73 US grants and 65 published applications in this corpus.
Search patents in H03F- Granted patents
- 73
- Published applications
- 65
- Assignees
- 60
- Inventors
- 143
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 4 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 1 |
| 2003 | 1 | 3 |
| 2004 | 5 | 3 |
| 2005 | 0 | 3 |
| 2006 | 0 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 1 |
| 2009 | 1 | 1 |
| 2010 | 1 | 2 |
| 2011 | 1 | 0 |
| 2012 | 1 | 2 |
| 2013 | 1 | 1 |
| 2014 | 3 | 1 |
| 2015 | 0 | 1 |
| 2016 | 1 | 3 |
| 2017 | 5 | 3 |
| 2018 | 5 | 5 |
| 2019 | 5 | 3 |
| 2020 | 5 | 4 |
| 2021 | 2 | 3 |
| 2022 | 1 | 5 |
| 2023 | 9 | 8 |
| 2024 | 4 | 6 |
| 2025 | 4 | 1 |
| 2026 | 0 | 2 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Broadband on-chip nested-loop alternating current (AC)-coupling systems and methods21 Oct 2025US 12,451,847 B2Analog Devices, Inc.
- Power amplifier10 Jun 2025US 12,328,104 B2University of Electronic Science and Technology of China
- Systems for and methods of wideband distributed amplification22 Apr 2025US 12,283,930 B2Avago Technologies International Sales Pte. Limited
- Systems and methods for general-purpose, high-performance transversal filter processing4 Feb 2025US 12,218,399 B2Georgia Tech Research Corporation
- DC coupled amplifier having pre-driver and bias control8 Oct 2024US 12,113,483 B2MACOM Technologies Solutions Holdings, Inc.
- Wideband distributed amplifier in a receiver2 Apr 2026US 2026/0095127 A1Avago Technologies International Sales Pte. Limited
- Amplifier circuit5 Feb 2026US 2026/0039265 A1Advantest Corporation
- Multi-stack power amplifier30 Jan 2025US 2025/0038715 A1Samsung Electronics Co., Ltd.
- Distributed power amplifier28 Nov 2024US 2024/0396501 A1NEC Corporation
- Distributed circuit and control method therefor11 Jul 2024US 2024/0235507 A9Nippon Telegraph and Telephone Corporation
Most cited
By later US patents
- High gain wideband driver amplifier104US 6,794,934 B2iTerra Communications, LLC · 2004
- Field emitter array integrated distributed amplifiers37US 4,987,377 AThe United States of America as represented by the Secretary of the Navy · 1991
- Envelope tracking amplifier circuit28US 10,181,826 B2Qorvo US, Inc. · 2019
- Field emitter array integrated distributed amplifiers27US 4,901,028 AThe United States of America as represented by the Secretary of the Navy · 1990
- Distributed level-shifting network for cascading broadband amplifiers27US 6,759,907 B2Centellax, Inc. · 2004