H03F 1/302
In bipolar transistor amplifiers
Official title: {in bipolar transistor amplifiers (H03F1/303, H03F1/305, H03F1/307 take precedence)}
H03F1/302 (In bipolar transistor amplifiers) appears on 692 US grants and 530 published applications in this corpus.
Search patents in H03F- Granted patents
- 692
- Published applications
- 530
- Assignees
- 243
- Inventors
- 1,007
- Latest grant
- 15 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 14 | 0 |
| 1977 | 8 | 0 |
| 1978 | 6 | 0 |
| 1979 | 0 | 0 |
| 1980 | 8 | 0 |
| 1981 | 8 | 0 |
| 1982 | 8 | 0 |
| 1983 | 3 | 0 |
| 1984 | 10 | 0 |
| 1985 | 3 | 0 |
| 1986 | 9 | 0 |
| 1987 | 1 | 0 |
| 1988 | 6 | 0 |
| 1989 | 3 | 0 |
| 1990 | 5 | 0 |
| 1991 | 3 | 0 |
| 1992 | 6 | 0 |
| 1993 | 6 | 0 |
| 1994 | 10 | 0 |
| 1995 | 9 | 0 |
| 1996 | 5 | 0 |
| 1997 | 13 | 0 |
| 1998 | 10 | 0 |
| 1999 | 13 | 0 |
| 2000 | 8 | 0 |
| 2001 | 17 | 8 |
| 2002 | 32 | 26 |
| 2003 | 20 | 28 |
| 2004 | 35 | 35 |
| 2005 | 26 | 25 |
| 2006 | 20 | 23 |
| 2007 | 18 | 10 |
| 2008 | 15 | 8 |
| 2009 | 17 | 15 |
| 2010 | 11 | 10 |
| 2011 | 8 | 8 |
| 2012 | 16 | 14 |
| 2013 | 8 | 6 |
| 2014 | 13 | 13 |
| 2015 | 10 | 8 |
| 2016 | 11 | 17 |
| 2017 | 19 | 23 |
| 2018 | 24 | 31 |
| 2019 | 31 | 31 |
| 2020 | 29 | 48 |
| 2021 | 43 | 37 |
| 2022 | 33 | 25 |
| 2023 | 16 | 15 |
| 2024 | 16 | 30 |
| 2025 | 16 | 18 |
| 2026 | 13 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Bias circuit and power amplifier circuit15 Sep 2026US 12,738,897 B2Murata Manufacturing Co., Ltd.
- Transmission circuit18 Aug 2026US 12,712,502 B2Murata Manufacturing Co., Ltd.
- Constant transconductance-resistance tracking circuit for complementary metal oxide semiconductor amplifiers18 Aug 2026US 12,712,504 B1Synopsys, Inc.
- Constant VDS1 bias control for stacked transistor configuration11 Aug 2026US 12,706,571 B2pSemi Corporation
- Power amplifier11 Aug 2026US 12,706,572 B2Murata Manufacturing Co., Ltd.
- Wideband amplifier with one-bit step attenuation1 Oct 2026US 2026/0303036 A1Northrop Grumman Systems Corporation
- Damping resonance element with double-sided dc feeding technique for dc to mm-wave high gain cascode single-ended/differential distributed amplifier17 Sep 2026US 2026/0280506 A1Ciena Corporation
- Doherty amplifier10 Sep 2026US 2026/0269789 A1Murata Manufacturing Co., Ltd.
- Bias circuit for class c amplifiers27 Aug 2026US 2026/0254419 A1QUALCOMM Incorporated
- Non-linear self-heating correction20 Aug 2026US 2026/0246431 A1MACOM Technology Solutions Holdings, Inc.
Most cited
By later US patents
- Dual mode amplifier with bias control205US 5,432,473 ANokia Mobile Phones Ltd. · 1995
- Apparatus and methods for envelope tracking202US 8,718,188 B2Skyworks Solutions, Inc. · 2014
- HBT power amplifier110US 5,629,648 ARF Micro Devices, Inc. · 1997
- RF power amplifier circuit with mismatch tolerance101US 8,183,917 B2Quantance, Inc. · 2012
- HBT power amplifier77US 5,608,353 ARF Micro Devices, Inc. · 1997