H04L 27/01
Equalisers
Official title: Equalisers {(baseband equalizers at the transmitter end H04L25/03343; in analogue transmission systems H04B3/04, H04B7/005)}
H04L27/01 (Equalisers) appears on 777 US grants and 659 published applications in this corpus.
Search patents in H04L- Granted patents
- 777
- Published applications
- 659
- Assignees
- 263
- Inventors
- 1,199
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 4 | 0 |
| 1978 | 2 | 0 |
| 1979 | 3 | 0 |
| 1980 | 3 | 0 |
| 1981 | 4 | 0 |
| 1982 | 2 | 0 |
| 1983 | 5 | 0 |
| 1984 | 7 | 0 |
| 1985 | 1 | 0 |
| 1986 | 6 | 0 |
| 1987 | 8 | 0 |
| 1988 | 4 | 0 |
| 1989 | 6 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 5 | 0 |
| 1993 | 0 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 1 | 1 |
| 2002 | 5 | 1 |
| 2003 | 3 | 2 |
| 2004 | 1 | 2 |
| 2005 | 0 | 5 |
| 2006 | 6 | 9 |
| 2007 | 2 | 9 |
| 2008 | 6 | 9 |
| 2009 | 10 | 8 |
| 2010 | 5 | 25 |
| 2011 | 3 | 12 |
| 2012 | 23 | 10 |
| 2013 | 49 | 51 |
| 2014 | 66 | 99 |
| 2015 | 95 | 56 |
| 2016 | 52 | 38 |
| 2017 | 49 | 44 |
| 2018 | 45 | 50 |
| 2019 | 50 | 38 |
| 2020 | 46 | 33 |
| 2021 | 41 | 40 |
| 2022 | 41 | 39 |
| 2023 | 40 | 30 |
| 2024 | 31 | 28 |
| 2025 | 21 | 10 |
| 2026 | 11 | 10 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Equalizer with all-pass filter delay22 Sep 2026US 12,744,695 B2Cisco Technology, Inc.
- Method for communication in a communication network23 Jun 2026US 12,665,724 B2Wisig Networks Private Limited
- Serdes receiver with optimized CDR pulse shaping23 Jun 2026US 12,665,795 B2Taiwan Semiconductor Manufacturing Company.Ltd
- High-speed communication method and device based on duobinary signal23 Jun 2026US 12,665,796 B2Korea Advanced Institute of Science and Technology
- Digital signal symbol decision generation with corresponding confidence level16 Jun 2026US 12,659,200 B2Mellanox Technologies, Ltd.
- Receiver for background adaptation to plurality of parameters, method of operating receiver, and system including receiver24 Sep 2026US 2026/0291789 A1Gwangju Institute of Science and Technology
- Adaptive equalization circuit, adaptive equalization device, receiver, and adaptive equalization method30 Jul 2026US 2026/0222077 A1Ntt Innovative Devices Corporation
- Optical receiving apparatus and signal processing method23 Jul 2026US 2026/0213852 A1NTT, Inc.
- Hybrid receiver with learnable decider23 Jul 2026US 2026/0213876 A1Huawei Technologies Co., Ltd.
- Channel loss compensation circuit9 Jul 2026US 2026/0196993 A1Realtek Semiconductor Corp.
Most cited
By later US patents
- Method for equalizing a multicarrier signal in a multicarrier communication system431US 5,285,474 AThe Board of Trustees of the Leland Stanford Junior University · 1994
- Intelligent backhaul radio and antenna system311US 8,467,363 B2CBF Networks, Inc. · 2013
- Spectrally efficient FQPSK, FGMSK, and FQAM for enhanced performance CDMA, TDMA, GSM, OFDN, and other systems215US 6,470,055 B12002
- Method and apparatus for digitally equalizing a signal in a distributed antenna system207US 8,437,383 B2ADC Telecommunications, Inc. · 2013
- Intelligent backhaul radio174US 8,238,318 B1CBF Networks, Inc. · 2012