H03F 1/345
Using hybrid or directional couplers
Official title: {using hybrid or directional couplers}
H03F1/345 (Using hybrid or directional couplers) appears on 72 US grants and 28 published applications in this corpus.
Search patents in H03F- Granted patents
- 72
- Published applications
- 28
- Assignees
- 45
- Inventors
- 136
- Latest grant
- 3 Aug 2021
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 1 | 0 |
| 1997 | 2 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 1 | 0 |
| 2001 | 4 | 1 |
| 2002 | 10 | 2 |
| 2003 | 1 | 1 |
| 2004 | 3 | 2 |
| 2005 | 3 | 1 |
| 2006 | 3 | 3 |
| 2007 | 2 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 1 |
| 2010 | 2 | 5 |
| 2011 | 3 | 1 |
| 2012 | 4 | 1 |
| 2013 | 1 | 1 |
| 2014 | 0 | 0 |
| 2015 | 3 | 2 |
| 2016 | 1 | 0 |
| 2017 | 1 | 1 |
| 2018 | 1 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 0 |
| 2021 | 1 | 1 |
| 2022 | 0 | 0 |
| 2023 | 0 | 0 |
| 2024 | 0 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Amplifier with adaptively-controlled local feedback loop3 Aug 2021US 11,082,019 B2Semiconductor Components Industries, LLC
- Control system for a power amplifier12 May 2020US 10,651,809 B2Astrium GmbH
- Control system for a power amplifier5 Jun 2018US 9,991,860 B2Astrium GmbH
- Control system for a power amplifier25 Apr 2017US 9,634,631 B2Astrium GmbH
- Systems and methods for a radio frequency transmitter with improved linearity and power out utilizing pre-distortion and a GaN (gallium nitride) power amplifier device27 Dec 2016US 9,531,412 B2Aviat U.S., Inc.
- Peak current reduction in comunication devices23 May 2024US 2024/0171130 A1Motorola Solutions, Inc.
- Amplifier with adaptively-controlled local feedback loop8 Jul 2021US 2021/0211109 A1Semiconductor Components Industries, LLC
- Control system for a power amplifier4 Oct 2018US 2018/0287578 A1Astrium GmbH
- Control system for a power amplifier10 Aug 2017US 2017/0230021 A1Astrium GmbH
- Systems and Methods for a Radio Frequency Transmitter with Improved Linearity and Power Out Utilizing Pre-Distortion and a GaN (Gallium Nitride) Power Amplifier Device20 Aug 2015US 2015/0236732 A1Aviat U.S., Inc.
Most cited
By later US patents
- Dual open and closed loop linear transmitter183US 6,606,483 B1Motorola, Inc. · 2003
- Linearized power amplifier177US 5,420,536 AVictoria University of Technology · 1995
- High efficiency power amplifier168US 5,880,633 AMotorola, Inc. · 1999
- Method and apparatus for detecting and compensating for undesired phase shift in a radio transceiver156US 5,894,496 AEricsson Inc. · 1999
- Method for a transmitter to compensate for varying loading without an isolator131US 5,423,082 AMotorola, Inc. · 1995