H03F 2203/21112
A filter circuit being added at the input of a power amplifier
Official title: A filter circuit being added at the input of a power amplifier stage
H03F2203/21112 (A filter circuit being added at the input of a power amplifier) appears on 74 US grants and 78 published applications in this corpus.
Search patents in H03F- Granted patents
- 74
- Published applications
- 78
- Assignees
- 45
- Inventors
- 128
- Latest grant
- 22 Jul 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2002 | 0 | 1 |
| 2003 | 0 | 0 |
| 2004 | 3 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 1 |
| 2007 | 1 | 1 |
| 2008 | 1 | 2 |
| 2009 | 1 | 3 |
| 2010 | 2 | 2 |
| 2011 | 3 | 4 |
| 2012 | 4 | 3 |
| 2013 | 2 | 2 |
| 2014 | 1 | 2 |
| 2015 | 3 | 7 |
| 2016 | 7 | 11 |
| 2017 | 12 | 8 |
| 2018 | 7 | 6 |
| 2019 | 5 | 9 |
| 2020 | 7 | 4 |
| 2021 | 4 | 4 |
| 2022 | 4 | 4 |
| 2023 | 2 | 0 |
| 2024 | 3 | 1 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. 2026 runs to 8 Oct.
Recent patents
- Receiving module, packaging structure, printed circuit board, and electronic device22 Jul 2025US 12,368,412 B2Honor Device Co., Ltd.
- Audio processing circuit whose output stage has different configuration based on signal strength19 Nov 2024US 12,148,440 B2Realtek Semiconductor Corp.
- Semiconductor device24 Sep 2024US 12,101,067 B2Semiconductor Energy Laboratory Co.Ltd.
- Non-isolated single-inductor circuit for outputting positive and negative low-voltage power20 Aug 2024US 12,068,727 B2Guangdong Giwee Technology Co. Ltd.
- Analog front-end circuit capable of dynamically adjusting gain21 Feb 2023US 11,588,457 B2Realtek Semiconductor Corp.
- Amplification circuit27 Aug 2026US 2026/0254418 A1RichWave Technology Corp.
- Receiving module, packaging structure, printed circuit board, and electronic device4 Jul 2024US 2024/0223132 A1Honor Device Co., Ltd.
- Audio processing circuit27 Oct 2022US 2022/0343930 A1Realtek Semiconductor Corp.
- Semiconductor device21 Jul 2022US 2022/0231644 A1Semiconductor Energy Laboratory Co.Ltd.
- Analog front-end circuit capable of dynamically adjusting gain21 Jul 2022US 2022/0231646 A1Realtek Semiconductor Corp.
Most cited
By later US patents
- Radiofrequency amplifier30US 8,487,703 B2NXP B. V. · 2013
- RF power amplifying device and wireless communication terminal device26US 8,005,445 B2Renesas Electronics Corporation · 2011
- Low power distributed transmitter25US 7,184,490 B1ViXS Systems, Inc. · 2007
- Diversity receiver front end system with tunable output matching circuit21US 10,205,490 B2Skyworks Solutions, Inc. · 2019
- Hardware-efficient compensator for outphasing power amplifiers20US 9,595,920 B2Massachusette Institute of Technology · 2017