H03F 2200/252
Multiple switches coupled in the input circuit of an amplifier are controlled
Official title: Multiple switches coupled in the input circuit of an amplifier are controlled by a circuit, e.g. feedback circuitry being controlling the switch
H03F2200/252 (Multiple switches coupled in the input circuit of an amplifier are controlled) appears on 92 US grants and 92 published applications in this corpus.
Search patents in H03F- Granted patents
- 92
- Published applications
- 92
- Assignees
- 67
- Inventors
- 175
- Latest grant
- 16 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 1 | 0 |
| 2003 | 0 | 1 |
| 2004 | 2 | 5 |
| 2005 | 0 | 3 |
| 2006 | 6 | 5 |
| 2007 | 1 | 2 |
| 2008 | 3 | 9 |
| 2009 | 8 | 3 |
| 2010 | 5 | 4 |
| 2011 | 4 | 2 |
| 2012 | 1 | 2 |
| 2013 | 1 | 2 |
| 2014 | 3 | 0 |
| 2015 | 2 | 3 |
| 2016 | 4 | 6 |
| 2017 | 5 | 5 |
| 2018 | 5 | 6 |
| 2019 | 7 | 6 |
| 2020 | 8 | 5 |
| 2021 | 6 | 6 |
| 2022 | 5 | 6 |
| 2023 | 1 | 5 |
| 2024 | 8 | 4 |
| 2025 | 4 | 1 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Method for compensating for an internal voltage offset between two inputs of an amplifier16 Jun 2026US 12,658,867 B2STMicroelectronics (Alps) SAS
- Apparatus and method of power management using envelope stacking9 Dec 2025US 12,494,755 B2Qorvo Texas, LLC
- Source switched split LNA25 Nov 2025US 12,483,194 B2pSemi Corporation
- Amplifier circuit and sensor circuit5 Aug 2025US 12,381,526 B2Kabushiki Kaisha Toshiba
- Voice activity detection system and acoustic feature extraction circuit thereof25 Feb 2025US 12,236,976 B2Himax Technologies Limited
- Operational transconductance amplifier (ota) with separate cascode paths for reconfigurable input pairs23 Jul 2026US 2026/0213718 A1QUALCOMM Incorporated
- Variable gain arrangement18 Sep 2025US 2025/0293653 A1NXP B. V.
- Apparatus and method of power management using envelope stacking7 Nov 2024US 2024/0372517 A1Anokiwave, Inc.
- Source Switched Split LNA31 Oct 2024US 2024/0364269 A1pSemi Corporation
- Voice activity detection system and acoustic feature extraction circuit thereof22 Aug 2024US 2024/0282332 A1Himax Technologies Limited
Most cited
By later US patents
- Tunable microwave network using microelectromechanical switches81US 5,808,527 AHughes Electronics Corporation · 1998
- Chopper-stabilized instrumentation amplifier for impedance measurement81US 7,391,257 B1Medtronic, Inc. · 2008
- Chopper-stabilized instrumentation amplifier for impedance measurement73US 7,622,988 B2Medtronic, Inc. · 2009
- Multi-mode envelope tracking amplifier circuit71US 10,158,330 B1Qorvo US, Inc. · 2018
- Apparatus and method for a switched capacitor architecture for multi-band doherty power amplifiers70US 8,576,010 B2Samsung Electronics Co., Ltd. · 2013