H03F 3/505
With field-effect devices
Official title: {with field-effect devices}
H03F3/505 (With field-effect devices) appears on 373 US grants and 317 published applications in this corpus.
Search patents in H03F- Granted patents
- 373
- Published applications
- 317
- Assignees
- 202
- Inventors
- 651
- Latest grant
- 12 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 3 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 6 | 0 |
| 1986 | 1 | 0 |
| 1987 | 3 | 0 |
| 1988 | 7 | 0 |
| 1989 | 1 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 4 | 0 |
| 1994 | 6 | 0 |
| 1995 | 8 | 0 |
| 1996 | 3 | 0 |
| 1997 | 6 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 7 | 1 |
| 2002 | 4 | 4 |
| 2003 | 10 | 10 |
| 2004 | 7 | 14 |
| 2005 | 6 | 9 |
| 2006 | 12 | 20 |
| 2007 | 15 | 15 |
| 2008 | 14 | 12 |
| 2009 | 13 | 14 |
| 2010 | 17 | 13 |
| 2011 | 12 | 13 |
| 2012 | 8 | 15 |
| 2013 | 13 | 9 |
| 2014 | 14 | 9 |
| 2015 | 7 | 11 |
| 2016 | 12 | 9 |
| 2017 | 15 | 12 |
| 2018 | 11 | 14 |
| 2019 | 17 | 10 |
| 2020 | 13 | 16 |
| 2021 | 14 | 11 |
| 2022 | 5 | 14 |
| 2023 | 13 | 19 |
| 2024 | 12 | 16 |
| 2025 | 14 | 14 |
| 2026 | 6 | 13 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Envelope tracking integrated circuit operable across wide modulation bandwidth12 May 2026US 12,627,269 B2Qorvo US, Inc.
- Bias circuit for stacked power amplifiers with a variable power supply5 May 2026US 12,620,942 B2Murata Manufacturing Co., Ltd.
- Low power voltage reference31 Mar 2026US 12,591,262 B2Nordic Semiconductor ASA
- Low distortion driver for analog-to-digital converter (ADC)24 Mar 2026US 12,587,203 B2Texas Instruments Incorporated
- Amplifier circuit and composite circuit20 Jan 2026US 12,531,530 B2Mitsubishi Electric Corporation
- Driver amplifier including parallel-integrated flipped voltage follower and source follower30 Jul 2026US 2026/0221170 A1QUALCOMM Incorporated
- Transimpedance amplifier with low supply voltage16 Jul 2026US 2026/0205079 A1Mediatek Inc.
- Amplifier circuit and mass spectrometer including same25 Jun 2026US 2026/0180524 A1Hitachi High-Tech Corporation
- Common source and source follower buffer to interface up-converter and driver amplifier25 Jun 2026US 2026/0180529 A1QUALCOMM Incorporated
- Integrated resistive element operative as sensing unit with improved sensing accuracy and electronic apparatus comprising the same11 Jun 2026US 2026/0163535 A1Monolithic Power Systems, Inc.
Most cited
By later US patents
- Parallel HV MOSFET high power stable amplifier119US 6,046,641 AENI Technologies, Inc. · 2000
- Gate-coupled field-effect transistor pair amplifier114US 4,518,926 AAT&T Bell Laboratories · 1985
- BiCMOS devices97US 5,856,695 AHarris Corporation · 1999
- Power loop control based envelope tracking79US 9,247,496 B2RF Micro Devices, Inc. · 2016
- Pseudo-envelope follower power management system with high frequency ripple current compensation70US 8,633,766 B2RF Micro Devices, Inc. · 2014