H03F 2203/45731
The lc comprising a transformer
Official title: the LC comprising a transformer
H03F2203/45731 (The lc comprising a transformer) appears on 253 US grants and 278 published applications in this corpus.
Search patents in H03F- Granted patents
- 253
- Published applications
- 278
- Assignees
- 135
- Inventors
- 519
- Latest grant
- 17 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 0 |
| 2003 | 0 | 1 |
| 2004 | 0 | 3 |
| 2005 | 1 | 7 |
| 2006 | 7 | 7 |
| 2007 | 6 | 5 |
| 2008 | 7 | 9 |
| 2009 | 5 | 10 |
| 2010 | 10 | 7 |
| 2011 | 6 | 11 |
| 2012 | 14 | 12 |
| 2013 | 14 | 12 |
| 2014 | 14 | 20 |
| 2015 | 15 | 15 |
| 2016 | 15 | 15 |
| 2017 | 13 | 8 |
| 2018 | 13 | 10 |
| 2019 | 21 | 16 |
| 2020 | 11 | 12 |
| 2021 | 15 | 19 |
| 2022 | 12 | 22 |
| 2023 | 10 | 13 |
| 2024 | 21 | 16 |
| 2025 | 17 | 18 |
| 2026 | 3 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Gain equalizer and method for controlling tunable gain of gain equalizer17 Mar 2026US 12,580,541 B2Mediatek Inc.
- Amplitude modulation transmission device20 Jan 2026US 12,531,516 B2Research & Business Foundation Sungkyunkwan University
- Compact transformer-based notch filter13 Jan 2026US 12,525,958 B2Newracom, Inc.
- Interstage matching network attenuator30 Dec 2025US 12,512,808 B2Intel Corporation
- Bias circuit and power amplifier9 Dec 2025US 12,494,751 B2Shanghai WUQI Microelectronics Co., Ltd.
- Rf amplifier16 Jul 2026US 2026/0205076 A1STMicroelectronics International N. V.
- Electronic amplifier25 Jun 2026US 2026/0180534 A1Renesas Electronics America Inc.
- System, method and apparatus for supporting multi-mode amplifier for multiple wireless communication protocols18 Jun 2026US 2026/0171981 A1Silicon Laboratories Inc.
- Power detection18 Jun 2026US 2026/0172064 A1Huawei Technologies Co., Ltd.
- Differential power amplifier28 May 2026US 2026/0149413 A1Murata Manufacturing Co., Ltd.
Most cited
By later US patents
- Systems and methods for power amplifiers with voltage boosting multi-primary transformers102US 7,880,547 B2Georgia Tech Research Corporation · 2011
- Optimization methods for amplifier with variable supply power99US 9,219,445 B2Peregrine Semiconductor Corporation · 2015
- RF power amplifiers with improved efficiency and output power74US 8,686,796 B2QUALCOMM Incorporated · 2014
- DAC based switching power amplifier70US 7,509,102 B2Broadcom Corporation · 2009
- Silicon-on-insulator high power amplifiers56US 8,368,469 B2Purdue Research Foundation · 2013