H03H 11/0427
Filters using a single transconductance amplifier
Official title: {Filters using a single transconductance amplifier; Filters derived from a single transconductor filter, e.g. by element substitution, cascading, parallel connection (H03H11/0433 - H03H11/0472 take precedence)}
H03H11/0427 (Filters using a single transconductance amplifier) appears on 14 US grants and 15 published applications in this corpus.
Search patents in H03H- Granted patents
- 14
- Published applications
- 15
- Assignees
- 13
- Inventors
- 33
- Latest grant
- 21 Oct 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 1 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
| 2011 | 2 | 1 |
| 2012 | 0 | 1 |
| 2013 | 0 | 2 |
| 2014 | 1 | 1 |
| 2015 | 2 | 1 |
| 2016 | 1 | 1 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 2 | 1 |
| 2021 | 0 | 1 |
| 2022 | 1 | 1 |
| 2023 | 1 | 1 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Filter21 Oct 2025US 12,451,868 B2Novelda AS
- Polyphase filter with interphase coupling18 Apr 2023US 11,632,098 B2QUALCOMM Incorporated
- Enhanced discrete-time feedforward equalizer27 Dec 2022US 11,539,555 B2Texas Instruments Incorporated
- Source follower-based sallen-key architecture15 Sep 2020US 10,778,189 B1Analog Devices, Inc.
- Current-mode filtering using current steering21 Apr 2020US 10,630,328 B2QUALCOMM Incorporated
- Filter28 Sep 2023US 2023/0308082 A1Novelda AS
- Polyphase Filter with Interphase Coupling29 Sep 2022US 2022/0311423 A1QUALCOMM Incorporated
- Enhanced discrete-time feedforward equalizer30 Dec 2021US 2021/0409246 A1Texas Instruments Incorporated
- Current-Mode Filtering Using Current Steering13 Feb 2020US 2020/0052729 A1QUALCOMM Incorporated
- Reconfigurable radio frequency (rf) bandstop / intermediate frequency (if) bandpass filter15 Feb 2018US 2018/0048293 A1QUALCOMM Incorporated
Most cited
By later US patents
- Combined filter and transconductance amplifier48US 8,957,728 B2RF Micro Devices, Inc. · 2015
- Current-input current-output reconfigurable passive reconstruction filter10US 7,902,917 B2Broadcom Corporation · 2011
- Transconductor element for high speed GM-C integrated filters8US 5,570,049 AExar Corporation · 1996
- Reconfigurable radio frequency (RF) bandstop/intermediate frequency (IF) bandpass filter5US 9,991,875 B2QUALCOMM Incorporated · 2018
- Source follower-based sallen-key architecture2US 10,778,189 B1Analog Devices, Inc. · 2020