H03F 2203/21131
The input bias voltage of a power amplifier being controlled
Official title: the input bias voltage of a power amplifier being controlled, e.g. by a potentiometer or an emitter follower
H03F2203/21131 (The input bias voltage of a power amplifier being controlled) appears on 67 US grants and 72 published applications in this corpus.
Search patents in H03F- Granted patents
- 67
- Published applications
- 72
- Assignees
- 34
- Inventors
- 82
- Latest grant
- 25 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 0 | 0 |
| 2010 | 0 | 0 |
| 2011 | 2 | 11 |
| 2012 | 1 | 1 |
| 2013 | 7 | 3 |
| 2014 | 2 | 2 |
| 2015 | 6 | 12 |
| 2016 | 7 | 9 |
| 2017 | 11 | 8 |
| 2018 | 9 | 5 |
| 2019 | 3 | 5 |
| 2020 | 3 | 6 |
| 2021 | 7 | 5 |
| 2022 | 1 | 2 |
| 2023 | 1 | 0 |
| 2024 | 3 | 2 |
| 2025 | 3 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Multiple-mode RF power amplifiers25 Nov 2025US 12,483,196 B2NXP USA, Inc.
- Open loop process and temperature independent bias circuit for stacked device amplifiers1 Jul 2025US 12,348,193 B2The Boeing Company
- Bias circuit and power amplifier circuit22 Apr 2025US 12,283,925 B2Telefonaktiebolaget LM Ericsson (publ)
- Radio-frequency power-amplifying element21 May 2024US 11,990,873 B2Murata Manufacturing Co., Ltd.
- Bias circuit and power amplifier circuit21 May 2024US 11,990,875 B2Telefonaktiebolaget LM Ericsson (publ)
- Open loop process and temperature independent bias circuit for stacked device amplifiers23 Oct 2025US 2025/0330129 A1The Boeing Company
- Bias circuit and power amplifier circuit8 Aug 2024US 2024/0267011 A1Telefonaktiebolaget LM Ericsson (publ)
- Multiple-mode rf power amplifiers27 Jun 2024US 2024/0213926 A1NXP USA, Inc.
- Open loop process and temperature independent bias circuit for stacked device amplifiers22 Sep 2022US 2022/0302881 A1The Boeing Company
- Bias circuit and power amplifier circuit21 Apr 2022US 2022/0123697 A1Telefonaktiebolaget LM Ericsson (publ)
Most cited
By later US patents
- Apparatus and method for enabled switch detection133US 8,008,970 B1Skyworks Solutions, Inc. · 2011
- Methods for directional coupler termination impedance control38US 9,014,647 B2Skyworks Solutions, Inc. · 2015
- Radio frequency amplifiers35US 6,052,032 ANokia Mobile Phones Ltd. · 2000
- Apparatus and method for directional coupling33US 8,417,196 B2Skyworks Solutions, Inc. · 2013
- Apparatus and methods for power amplifier biasing19US 10,003,308 B2Skyworks Solutions, Inc. · 2018