H04L 27/36
Modulator circuits
Official title: Modulator circuits; Transmitter circuits
H04L27/36 (Modulator circuits) appears on 3,283 US grants and 3,167 published applications in this corpus.
Search patents in H04L- Granted patents
- 3,283
- Published applications
- 3,167
- Assignees
- 824
- Inventors
- 4,938
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 1 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 3 | 0 |
| 1982 | 3 | 0 |
| 1983 | 1 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 6 | 0 |
| 1987 | 6 | 0 |
| 1988 | 6 | 0 |
| 1989 | 8 | 0 |
| 1990 | 3 | 0 |
| 1991 | 8 | 0 |
| 1992 | 12 | 0 |
| 1993 | 7 | 0 |
| 1994 | 9 | 0 |
| 1995 | 12 | 0 |
| 1996 | 11 | 0 |
| 1997 | 13 | 0 |
| 1998 | 26 | 0 |
| 1999 | 30 | 0 |
| 2000 | 18 | 0 |
| 2001 | 24 | 17 |
| 2002 | 39 | 60 |
| 2003 | 35 | 67 |
| 2004 | 39 | 90 |
| 2005 | 38 | 83 |
| 2006 | 78 | 88 |
| 2007 | 79 | 122 |
| 2008 | 95 | 107 |
| 2009 | 97 | 114 |
| 2010 | 109 | 101 |
| 2011 | 123 | 110 |
| 2012 | 103 | 121 |
| 2013 | 171 | 144 |
| 2014 | 181 | 175 |
| 2015 | 196 | 217 |
| 2016 | 190 | 188 |
| 2017 | 204 | 157 |
| 2018 | 188 | 154 |
| 2019 | 184 | 209 |
| 2020 | 210 | 191 |
| 2021 | 159 | 133 |
| 2022 | 146 | 127 |
| 2023 | 124 | 129 |
| 2024 | 126 | 117 |
| 2025 | 89 | 92 |
| 2026 | 56 | 54 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04L 27/366Arrangements for compensating undesirable properties of the transmission path between the modulator1,250
- H04L 27/362Modulation using more than one carrier1,225
- H04L 27/361Modulation using a single or unspecified number of carriers375
- H04L 27/365Modulation using digital generation of the modulated carrier87
Recent patents
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- Approaches for APSK modulation15 Sep 2026US 12,739,157 B2Telefonaktiebolaget LM Ericsson (publ)
- OpenFEC error marking8 Sep 2026US 12,732,306 B2Ciena Corporation
- Pairing modulation8 Sep 2026US 12,732,403 B2Vestel Elektronik Sanayi Ve Ticaret A.S.
- Approximations in distribution matching procedures8 Oct 2026US 2026/0312859 A1QUALCOMM Incorporated
- Method for communication over time-based channels8 Oct 2026US 2026/0312860 A1
- Efficient soft demapping for multi antenna communication systems employing unequal qam1 Oct 2026US 2026/0303153 A1Avago Technologies International Sales Pte. Limited
- Method and apparatus for communication of signals1 Oct 2026US 2026/0303433 A1QUANTUMSINE OPERATING Pte Ltd
- Method and apparatus for communication of signals1 Oct 2026US 2026/0303434 A1QUANTUMSINE OPERATING Pte Ltd
Most cited
By later US patents
- Method and apparatus for multiple access between transceivers in wireless communications using OFDM spread spectrum691US 5,282,222 A1994
- Lower overhead method for data transmission using ATM and SCDMA over hybrid fiber coax cable plant683US 5,991,308 ATerayon Communication Systems, Inc. · 1999
- Apparatus and method for digital data transmission using orthogonal codes473US 6,356,555 B1Terayon Communications Systems, Inc. · 2002
- Non-linear adaptive AM/AM and AM/PM pre-distortion compensation with time and temperature compensation for low power applications412US 7,215,716 B12007
- Apparatus and method for digital data transmission over a CATV system using an ATM transport protocol and SCDMA345US 5,745,837 ATerayon Corporation · 1998