H03F 3/45973
By using a feedback circuit
Official title: {by using a feedback circuit}
H03F3/45973 (By using a feedback circuit) appears on 377 US grants and 295 published applications in this corpus.
Search patents in H03F- Granted patents
- 377
- Published applications
- 295
- Assignees
- 213
- Inventors
- 726
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 0 | 0 |
| 1989 | 2 | 0 |
| 1990 | 3 | 0 |
| 1991 | 5 | 0 |
| 1992 | 6 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 3 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 6 | 0 |
| 2001 | 11 | 0 |
| 2002 | 12 | 19 |
| 2003 | 18 | 16 |
| 2004 | 26 | 21 |
| 2005 | 16 | 24 |
| 2006 | 29 | 26 |
| 2007 | 21 | 11 |
| 2008 | 19 | 16 |
| 2009 | 14 | 14 |
| 2010 | 11 | 3 |
| 2011 | 7 | 3 |
| 2012 | 5 | 7 |
| 2013 | 9 | 10 |
| 2014 | 11 | 7 |
| 2015 | 7 | 9 |
| 2016 | 9 | 6 |
| 2017 | 12 | 13 |
| 2018 | 13 | 10 |
| 2019 | 17 | 10 |
| 2020 | 10 | 14 |
| 2021 | 15 | 13 |
| 2022 | 15 | 11 |
| 2023 | 10 | 5 |
| 2024 | 5 | 13 |
| 2025 | 4 | 10 |
| 2026 | 9 | 4 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Methods and apparatus to determine a bias current of an amplifier29 Sep 2026US 12,750,024 B2Texas Instruments Incorporated
- Current sense amplifier circuit and trimming method of offset referred to input voltage22 Sep 2026US 12,744,501 B2Richtek Technology Corporation
- Charge injection-related and switching error-related offset reduction by local chopping of switched-capacitor circuits1 Sep 2026US 12,726,163 B1Cirrus Logic, Inc.
- Enhanced auto-zero circuit25 Aug 2026US 12,719,428 B2Analog Devices, Inc.
- DC offset calibration in an interdependent quadrature receiver7 Jul 2026US 12,676,580 B2Silicon Laboratories Inc.
- Measurement and compensation of amplifier input offset6 Aug 2026US 2026/0230052 A1Microchip Technology Incorporated
- Charge amplifier circuit for a capacitive sensing arrangement11 Jun 2026US 2026/0163541 A1EM Microelectronic-Marin SA
- Method of operating a differential amplifier arrangement, corresponding differential amplifier, integrated circuit and system30 Apr 2026US 2026/0121584 A1STMicroelectronics International N. V.
- Signal processing circuit16 Apr 2026US 2026/0106588 A1Fuji Electric Co., Ltd.
- Systems and Methods for Improved Neurophysiological Monitoring25 Dec 2025US 2025/0392273 A1Cadwell Laboratories, Inc.
Most cited
By later US patents
- Subthreshold CMOS amplifier with offset adaptation214US 4,935,702 ASynaptics Incorporated · 1990
- Differential DC offset compensation circuit181US 5,471,665 AMotorola, Inc. · 1995
- CMOS amplifier with offset adaptation153US 5,059,920 ASynaptics Incorporated · 1991
- CMOS amplifier with offset adaptation149US 5,068,622 ASynaptics Incorporated · 1991
- CMOS winner-take all circuit with offset adaptation135US 5,146,106 ASynaptics Incorporated · 1992