H04L 27/227
Using coherent demodulation
Official title: using coherent demodulation
H04L27/227 (Using coherent demodulation) appears on 1,180 US grants and 587 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,180
- Published applications
- 587
- Assignees
- 455
- Inventors
- 1,873
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 20 | 0 |
| 1977 | 12 | 0 |
| 1978 | 20 | 0 |
| 1979 | 8 | 0 |
| 1980 | 16 | 0 |
| 1981 | 13 | 0 |
| 1982 | 23 | 0 |
| 1983 | 12 | 0 |
| 1984 | 18 | 0 |
| 1985 | 22 | 0 |
| 1986 | 21 | 0 |
| 1987 | 31 | 0 |
| 1988 | 13 | 0 |
| 1989 | 30 | 0 |
| 1990 | 21 | 0 |
| 1991 | 13 | 0 |
| 1992 | 17 | 0 |
| 1993 | 18 | 0 |
| 1994 | 13 | 0 |
| 1995 | 12 | 0 |
| 1996 | 20 | 0 |
| 1997 | 28 | 0 |
| 1998 | 31 | 0 |
| 1999 | 30 | 0 |
| 2000 | 22 | 0 |
| 2001 | 24 | 11 |
| 2002 | 26 | 19 |
| 2003 | 29 | 23 |
| 2004 | 31 | 27 |
| 2005 | 21 | 25 |
| 2006 | 23 | 22 |
| 2007 | 25 | 26 |
| 2008 | 19 | 23 |
| 2009 | 20 | 17 |
| 2010 | 30 | 18 |
| 2011 | 23 | 22 |
| 2012 | 21 | 23 |
| 2013 | 34 | 28 |
| 2014 | 51 | 37 |
| 2015 | 42 | 44 |
| 2016 | 36 | 30 |
| 2017 | 47 | 44 |
| 2018 | 45 | 29 |
| 2019 | 36 | 28 |
| 2020 | 34 | 26 |
| 2021 | 26 | 23 |
| 2022 | 10 | 8 |
| 2023 | 13 | 9 |
| 2024 | 13 | 14 |
| 2025 | 11 | 8 |
| 2026 | 6 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Multi-layer transmission and reception method in 1-bit quantization system, and apparatus therefor8 Sep 2026US 12,732,404 B2LG Electronics Inc.
- Multi-gigabit per second frequency-shift keying (FSK) transceiver28 Apr 2026US 12,615,174 B2The Regents of the University of California
- Joint index modulation and multiple input multiple output (MIMO) sensing in joint communication and sensing (JCS) systems17 Mar 2026US 12,580,803 B2QUALCOMM Incorporated
- Systems and methods for processing variable coding and modulation (VCM) based communication signals using feedforward carrier and timing recovery10 Mar 2026US 12,574,272 B2Kratos Integral Holdings, LLC
- Communication apparatus and communication method24 Feb 2026US 12,562,817 B2NTT, Inc.
- Phase-based demodulation in wireless power transfer systems14 May 2026US 2026/0135412 A1STMicroelectronics International N. V.
- Radio frequency (rf) communications system having rf nodes that determine a despreading sequence and phase and timing offsets for frequency agility5 Mar 2026US 2026/0067139 A1L3Harris Technologies, Inc.
- Electronic circuit for delivering signals in quadrature5 Feb 2026US 2026/0039520 A1STMicroelectronics France
- Joint index modulation and multiple input multiple output (mimo) sensing in joint communication and sensing (jcs) systems25 Sep 2025US 2025/0300874 A1QUALCOMM Incorporated
- 50 gb/s pam4 bi-directional plastic waveguide link having carrier synchronization using pi-based costas loop19 Jun 2025US 2025/0202510 A1Point2 Technology, Inc.
Most cited
By later US patents
- Apparatus for providing communication services and methods thereof469US 9,520,945 B2AT&T Intellectual Property I, L. P. · 2016
- Method and apparatus for generating and collecting viewing statistics for remote terminals in a cable television system432US 5,251,324 AScientific-Atlanta, Inc. · 1993
- System for data channel level control272US 5,155,590 AScientific-Atlanta, Inc. · 1992
- Automatic frequency selection in a bi-directional cable television system258US 5,225,902 AScientific-Atlanta, Inc. · 1993
- Cable television radio frequency data processor211US 5,142,690 AScientific-Atlanta, Inc. · 1992