H03F 3/42
Amplifiers with two or more amplifying elements having their dc paths in
Official title: Amplifiers with two or more amplifying elements having their DC paths in series with the load, the control electrode of each element being excited by at least part of the input signal, e.g. so-called totem-pole amplifiers
H03F3/42 (Amplifiers with two or more amplifying elements having their dc paths in) appears on 94 US grants and 56 published applications in this corpus.
Search patents in H03F- Granted patents
- 94
- Published applications
- 56
- Assignees
- 67
- Inventors
- 170
- Latest grant
- 9 Jul 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 2 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 2 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 1 | 2 |
| 2003 | 1 | 2 |
| 2004 | 2 | 1 |
| 2005 | 2 | 6 |
| 2006 | 4 | 5 |
| 2007 | 2 | 1 |
| 2008 | 5 | 3 |
| 2009 | 3 | 4 |
| 2010 | 3 | 2 |
| 2011 | 6 | 5 |
| 2012 | 4 | 4 |
| 2013 | 5 | 2 |
| 2014 | 2 | 1 |
| 2015 | 1 | 0 |
| 2016 | 0 | 0 |
| 2017 | 0 | 1 |
| 2018 | 2 | 5 |
| 2019 | 2 | 4 |
| 2020 | 6 | 4 |
| 2021 | 2 | 2 |
| 2022 | 0 | 1 |
| 2023 | 0 | 0 |
| 2024 | 2 | 0 |
| 2025 | 0 | 1 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Semiconductor devices having unit cell transistors with smoothed turn-on behavior and improved linearity9 Jul 2024US 12,034,072 B2MACOM Technology Solutions Holdings, Inc.
- Single structure CASCODE device and method of manufacturing same2 Jul 2024US 12,027,599 B2Postech Research and Business Development Foundation
- Semiconductor devices having a plurality of unit cell transistors that have smoothed turn-on behavior and improved linearity13 Apr 2021US 10,978,583 B2Cree, Inc.
- Power amplifier and method of operating the power amplifier2 Mar 2021US 10,938,359 B1Beken Corporation
- Oscillator circuit using comparator29 Dec 2020US 10,879,858 B2Fuji Electric Co., Ltd.
- Linear power source circuit13 Mar 2025US 2025/0088154 A1Rohm Co., Ltd.
- Single structure cascode device and method of manufacturing same17 Mar 2022US 2022/0085781 A1Postech Research and Business Development Foundation
- Semiconductor devices having a plurality of unit cell transistors that have smoothed turn-on behavior and improved linearity24 Jun 2021US 2021/0193825 A1Cree, Inc.
- Power amplifier and method of operating the power amplifier18 Feb 2021US 2021/0050827 A1Beken Corporation
- Self-Biased Amplifier for Use with a Low-Power Crystal Oscillator11 Jun 2020US 2020/0186086 A1United Microelectronics Corp.
Most cited
By later US patents
- High power high impedance microwave devices for power applications154US 6,137,367 AAMCOM Communications, Inc. · 2000
- Stacked linear power amplifier with capacitor feedback and resistor isolation135US 8,487,706 B2Peregrine Semiconductor Corporation · 2013
- High-voltage circuit for insulated gate field-effect transistor109US 4,317,055 AHitachi, Ltd. · 1982
- Duplexer circuit apparatus provided with amplifier and impedance matching inductor102US 6,066,993 AMitsubishi Denki Kabushiki Kaisha · 2000
- Stacked RF power amplifier84US 7,053,718 B2Silicon Laboratories Inc. · 2006