H04L 27/265
Fourier transform demodulators
Official title: {Fourier transform demodulators, e.g. fast Fourier transform [FFT] or discrete Fourier transform [DFT] demodulators (H04L27/26524 takes precedence)}
H04L27/265 (Fourier transform demodulators) appears on 725 US grants and 812 published applications in this corpus.
Search patents in H04L- Granted patents
- 725
- Published applications
- 812
- Assignees
- 293
- Inventors
- 1,303
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 1 | 0 |
| 1995 | 1 | 0 |
| 1996 | 3 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 3 | 0 |
| 2000 | 2 | 0 |
| 2001 | 7 | 1 |
| 2002 | 8 | 16 |
| 2003 | 11 | 10 |
| 2004 | 5 | 9 |
| 2005 | 5 | 14 |
| 2006 | 17 | 20 |
| 2007 | 7 | 74 |
| 2008 | 27 | 55 |
| 2009 | 26 | 38 |
| 2010 | 28 | 21 |
| 2011 | 21 | 20 |
| 2012 | 39 | 25 |
| 2013 | 27 | 25 |
| 2014 | 31 | 41 |
| 2015 | 50 | 40 |
| 2016 | 34 | 50 |
| 2017 | 52 | 46 |
| 2018 | 56 | 56 |
| 2019 | 47 | 37 |
| 2020 | 52 | 45 |
| 2021 | 41 | 33 |
| 2022 | 31 | 24 |
| 2023 | 33 | 24 |
| 2024 | 21 | 23 |
| 2025 | 22 | 32 |
| 2026 | 10 | 33 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Signal transmission method and signal reception method of heterogeneous systems sharing frequency band6 Oct 2026US 12,756,613 B2Electronics and Telecommunications Research Institute
- Fast fourier transform data compression for vibration applications28 Jul 2026US 12,695,656 B2Honeywell International Inc.
- Reference signals for phase jump boundaries16 Jun 2026US 12,659,210 B2QUALCOMM Incorporated
- Detection of in-band interference16 Jun 2026US 12,659,211 B2Texas Instruments Incorporated
- Terminal device, base station apparatus, and communication method26 May 2026US 12,641,615 B2Sony Group Corporation
- Method and apparatus for determining precoding matrix in mobile communications24 Sep 2026US 2026/0291579 A1MediaTek Singapore Pte. Ltd.
- Detection of in-band interference17 Sep 2026US 2026/0280955 A1Texas Instruments Incorporated
- Communication method and apparatus10 Sep 2026US 2026/0270131 A1Huawei Technologies Co., Ltd.
- Communication apparatus and control method10 Sep 2026US 2026/0270900 A1Kabushiki Kaisha Toshiba
- Method and apparatus for compensating prach decimation filter for detection of prach preamble in wireless communication system10 Sep 2026US 2026/0271089 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Transport of payload information and control messages on multiple orthogonal carriers spread throughout substantially all of a frequency bandwith320US 6,275,990 B1ADC Telecommunications, Inc. · 2001
- Signal modulation method resistant to echo reflections and frequency offsets296US 9,083,595 B2Cohere Technologies, Inc. · 2015
- Multicarrier frequency hopping communications system274US 5,548,582 AU. S. Philips Corporation · 1996
- Channel selection for a hybrid fiber coax network264US 6,334,219 B1ADC Telecommunications, Inc. · 2001
- Dynamic bandwidth allocation220US 7,069,577 B2SDC Telecommunications, Inc. · 2006