H03F 2201/3218
The main amplifier or error amplifier being a feedforward amplifier
Official title: the main amplifier or error amplifier being a feedforward amplifier
H03F2201/3218 (The main amplifier or error amplifier being a feedforward amplifier) appears on 39 US grants and 21 published applications in this corpus.
Search patents in H03F- Granted patents
- 39
- Published applications
- 21
- Assignees
- 32
- Inventors
- 72
- Latest grant
- 3 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
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| 1988 | 1 | 0 |
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| 2001 | 2 | 2 |
| 2002 | 1 | 3 |
| 2003 | 2 | 1 |
| 2004 | 1 | 0 |
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| 2009 | 0 | 0 |
| 2010 | 0 | 1 |
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| 2012 | 1 | 0 |
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| 2016 | 1 | 3 |
| 2017 | 2 | 2 |
| 2018 | 3 | 2 |
| 2019 | 0 | 0 |
| 2020 | 3 | 1 |
| 2021 | 0 | 0 |
| 2022 | 0 | 2 |
| 2023 | 0 | 1 |
| 2024 | 0 | 2 |
| 2025 | 2 | 0 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Feedforward amplifier circuit, audio amplifier and audio playing device3 Mar 2026US 12,567,839 B2Guangzhou Topping Electronics and Technology Co., Ltd.
- Feedforward amplifier17 Jun 2025US 12,334,871 B2Telefonaktiebolaget LM Ericsson (publ)
- Compensation circuit and chip, method, apparatus, storage medium, and electronic device27 May 2025US 12,316,282 B2Sanechips Technology Co., Ltd.
- Feed-forward power amplifier with offline tuning capability8 Dec 2020US 10,862,438 B1Motorola Solutions, Inc.
- Extended operational bandwidth amplifiers with fractional instantaneous bandwidth feed forward correction3 Nov 2020US 10,826,440 B2Motorola Solutions, Inc.
- Feed-forward amplifier and method for transitioning between offline and online tuning states2 Jul 2026US 2026/0189195 A1
- Amplifier error correction circuit19 Sep 2024US 2024/0313709 A1Telefonaktiebolaget LM Ericsson (publ)
- Feedforward Amplifier Circuit, Audio Amplifier and Audio Playing Device11 Jul 2024US 2024/0235493 A1Guangzhou Topping Electronic and Technology Co., Ltd.
- A feedforward amplifier9 Mar 2023US 2023/0075926 A1Telefonaktiebolaget LM Ericsson (publ)
- Compensation circuit and chip, method, apparatus, storage medium, and electronic device8 Dec 2022US 2022/0393649 A1Zte Corporation
Most cited
By later US patents
- Feed-forward amplifier83US 6,392,483 B2Ntt Docomo, Inc. · 2002
- Linear amplifier control56US 5,386,198 ATelefonaktiebolaget L M Ericsson · 1995
- Low-distortion feed-forward amplifier49US 5,304,945 AAT&T Bell Laboratories · 1994
- Method and apparatus for feedforward power amplifying42US 5,444,418 AMotorola, Inc. · 1995
- Method and apparatus for signal processing using reference signals42US 5,576,659 ABritish Technology Group Limited · 1996