H04B 3/146
Using phase-frequency equalisers
Official title: {using phase-frequency equalisers}
H04B3/146 (Using phase-frequency equalisers) appears on 31 US grants and 17 published applications in this corpus.
Search patents in H04B- Granted patents
- 31
- Published applications
- 17
- Assignees
- 28
- Inventors
- 49
- Latest grant
- 3 Jun 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 1 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 2 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 1 | 0 |
| 2001 | 0 | 0 |
| 2002 | 0 | 1 |
| 2003 | 1 | 0 |
| 2004 | 1 | 1 |
| 2005 | 0 | 0 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 0 |
| 2009 | 1 | 0 |
| 2010 | 0 | 0 |
| 2011 | 0 | 0 |
| 2012 | 0 | 1 |
| 2013 | 0 | 0 |
| 2014 | 1 | 2 |
| 2015 | 1 | 1 |
| 2016 | 2 | 3 |
| 2017 | 3 | 3 |
| 2018 | 1 | 0 |
| 2019 | 1 | 2 |
| 2020 | 1 | 1 |
| 2021 | 1 | 0 |
| 2022 | 0 | 1 |
| 2023 | 1 | 0 |
| 2024 | 0 | 1 |
| 2025 | 1 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
Recent patents
- Differential transmission substrate and power-over-differential data communication device3 Jun 2025US 12,323,274 B2Hitachi Astemo, Ltd.
- Simplified frequency-domain filter adaptation window18 Apr 2023US 11,632,147 B2Marvell Asia Pte Ltd
- Methods and systems for use of common mode rejection (CMR) for echo cancellation in uplink communications2 Nov 2021US 11,165,464 B2MaxLinear, Inc.
- Differential pair group equalization system19 May 2020US 10,660,197 B2Dell Products L. P.
- System and method for modulating filter coefficients in a channelizer11 Jun 2019US 10,320,596 B2Raytheon Company
- Differential transmission substrate and power-over-differential data communication device11 Jul 2024US 2024/0235900 A1Hitachi Astemo, Ltd.
- Simplified frequency-domain filter adaptation window17 Feb 2022US 2022/0052725 A1Marvell Asia Pte Ltd
- Differential pair group equalization system23 Jan 2020US 2020/0029425 A1Dell Products L. P.
- Methods and systems for use of common mode rejection (cmr) for echo cancellation in uplink communications14 Nov 2019US 2019/0349026 A1MaxLinear, Inc.
- System and method for modulating filter coefficients in a channelizer4 Apr 2019US 2019/0104002 A1Raytheon Company
Most cited
By later US patents
- Amplifier for correcting group time delay of electrical signals and an intermediate frequency amplifier stage for radio equipment comprising an amplifier of this kind28US 4,559,503 AAlcatel Thomson Faiscequx Hertziens · 1985
- Linear phase filter with self-equalized group delay25US 4,395,688 AHarris Corporation · 1983
- Multi-variate system having an intelligent telecommunications interface with automatic adaptive delay distortion equalization (and related method)23US 5,555,285 AWestell, Inc. · 1996
- System and method for phase equalization21US 5,181,228 ALevel One Communications, Inc. · 1993
- Variable delay equalizer18US 3,967,220 ANippon Electric Co., Ltd. · 1976