H03F 1/347
Using transformers
Official title: {using transformers}
H03F1/347 (Using transformers) appears on 119 US grants and 127 published applications in this corpus.
Search patents in H03F- Granted patents
- 119
- Published applications
- 127
- Assignees
- 80
- Inventors
- 238
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 2 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 2 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 3 | 1 |
| 2002 | 1 | 0 |
| 2003 | 0 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 1 |
| 2006 | 1 | 0 |
| 2007 | 0 | 6 |
| 2008 | 2 | 0 |
| 2009 | 4 | 2 |
| 2010 | 2 | 1 |
| 2011 | 3 | 5 |
| 2012 | 0 | 2 |
| 2013 | 5 | 4 |
| 2014 | 4 | 3 |
| 2015 | 1 | 1 |
| 2016 | 3 | 7 |
| 2017 | 8 | 9 |
| 2018 | 5 | 5 |
| 2019 | 10 | 10 |
| 2020 | 7 | 7 |
| 2021 | 7 | 6 |
| 2022 | 5 | 17 |
| 2023 | 3 | 6 |
| 2024 | 15 | 9 |
| 2025 | 8 | 18 |
| 2026 | 3 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Pseudo bi-directional amplifier25 Aug 2026US 12,719,423 B2QUALCOMM Incorporated
- Low noise amplifier and receiver using same in wireless communication system18 Aug 2026US 12,712,574 B2Samsung Electronics Co., Ltd.
- Circuit10 Feb 2026US 12,549,140 B2NXP B. V.
- Low noise amplifier incorporating Sutardja transformer4 Nov 2025US 12,463,604 B2
- System and method for adjusting amplifier bias current based on input signal envelope tracking23 Sep 2025US 12,424,976 B2QuantalRF AG
- Apparatus and techniques for jammer signal filtering27 Aug 2026US 2026/0254440 A1QUALCOMM Incorporated
- Power amplifier circuits with dual-polarity2 Jul 2026US 2026/0189190 A1Telefonaktiebolaget LM Ericsson (publ)
- Rf amplifier and rf receiver having the same18 Jun 2026US 2026/0171982 A1Electronics and Telecommunications Research Institute
- Noise-cancellation amplifier12 Mar 2026US 2026/0074658 A1NXP B. V.
- Low noise amplifier incorporating sutardja transformer26 Feb 2026US 2026/0058617 A1
Most cited
By later US patents
- Area efficient concurrent matching transceiver78US 8,626,084 B2QUALCOMM Incorporated · 2014
- Feedback cascode amplifier42US 5,015,968 APacific Monolithics · 1991
- Front end systems and related devices, integrated circuits, modules, and methods37US 10,276,521 B2Skyworks Solutions, Inc. · 2019
- Directive, broadband, high gain, active antenna system37US 7,936,311 B2Omereen Wireless, LLC · 2011
- High-gain low noise figure complementary metal oxide semiconductor amplifier with low current consumption27US 9,735,737 B2Skyworks Solutions, Inc. · 2017