H04L 27/362
Modulation using more than one carrier
Official title: {Modulation using more than one carrier, e.g. with quadrature carriers, separately amplitude modulated (H04L27/366 takes precedence)}
H04L27/362 (Modulation using more than one carrier) appears on 1,225 US grants and 1,135 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,225
- Published applications
- 1,135
- Assignees
- 439
- Inventors
- 2,159
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 1 | 0 |
| 1978 | 2 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 3 | 0 |
| 1985 | 2 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 5 | 0 |
| 1989 | 6 | 0 |
| 1990 | 2 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 2 | 0 |
| 1994 | 4 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 16 | 0 |
| 1999 | 11 | 0 |
| 2000 | 6 | 0 |
| 2001 | 7 | 8 |
| 2002 | 16 | 12 |
| 2003 | 13 | 16 |
| 2004 | 8 | 33 |
| 2005 | 13 | 24 |
| 2006 | 25 | 27 |
| 2007 | 22 | 54 |
| 2008 | 25 | 43 |
| 2009 | 34 | 44 |
| 2010 | 56 | 34 |
| 2011 | 47 | 28 |
| 2012 | 33 | 39 |
| 2013 | 54 | 48 |
| 2014 | 51 | 67 |
| 2015 | 77 | 64 |
| 2016 | 67 | 80 |
| 2017 | 62 | 56 |
| 2018 | 70 | 57 |
| 2019 | 77 | 82 |
| 2020 | 75 | 75 |
| 2021 | 70 | 52 |
| 2022 | 73 | 61 |
| 2023 | 51 | 52 |
| 2024 | 53 | 39 |
| 2025 | 37 | 26 |
| 2026 | 15 | 14 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- OpenFEC error marking8 Sep 2026US 12,732,306 B2Ciena Corporation
- Signal transmission with improved counter intermodulation performance8 Sep 2026US 12,732,408 B2Spreadtrum Communications USA Inc.
- Wireless communication device and method for IQ calibration1 Sep 2026US 12,726,395 B2TP-Link Systems Inc.
- Embedded constellation25 Aug 2026US 12,719,731 B2QUALCOMM Incorproated
- Decoupling transmitter from loopback path IQMM with phase delay-elimination by rotation4 Aug 2026US 12,701,040 B2Texas Instruments Incorporated
- High-speed serial interface1 Oct 2026US 2026/0303435 A1MaxLinear, Inc.
- Linear modulator for signaling at thz frequencies17 Sep 2026US 2026/0280948 A1Attotude, Inc.
- Active reconfigurable intelligent surface apparatus including a bidirectional signal modulator27 Aug 2026US 2026/0254705 A1Foundation of Soongsil University-Industry Cooperation
- Dynamic duty cycle control for an estimator6 Aug 2026US 2026/0230186 A1Idea Sistemas Eletronicôs LTDA S.A.
- Interferometric pam modulation6 Aug 2026US 2026/0230368 A1MACOM Technology Solutions Holdings, Inc.
Most cited
By later US patents
- 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
- Apparatus and method for digital data transmission over a CATV system using an ATM transport protocol and SCDMA345US 5,745,837 ATerayon Corporation · 1998
- Apparatus and method for equalization in distributed digital data transmission systems321US 6,665,308 B1Terayon Communication Systems, Inc. · 2003
- Apparatus and method for digital data transmission over video cable using orthogonal cyclic codes277US 5,793,759 ATerayon Corporation · 1998