H03L 7/1974
For fractional frequency division
Official title: {for fractional frequency division}
H03L7/1974 (For fractional frequency division) appears on 1,341 US grants and 1,107 published applications in this corpus.
Search patents in H03L- Granted patents
- 1,341
- Published applications
- 1,107
- Assignees
- 433
- Inventors
- 1,976
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 2 | 0 |
| 1985 | 3 | 0 |
| 1986 | 7 | 0 |
| 1987 | 4 | 0 |
| 1988 | 2 | 0 |
| 1989 | 3 | 0 |
| 1990 | 2 | 0 |
| 1991 | 9 | 0 |
| 1992 | 7 | 0 |
| 1993 | 5 | 0 |
| 1994 | 3 | 0 |
| 1995 | 4 | 0 |
| 1996 | 8 | 0 |
| 1997 | 6 | 0 |
| 1998 | 14 | 0 |
| 1999 | 12 | 0 |
| 2000 | 19 | 0 |
| 2001 | 19 | 9 |
| 2002 | 18 | 40 |
| 2003 | 36 | 37 |
| 2004 | 34 | 44 |
| 2005 | 32 | 45 |
| 2006 | 56 | 61 |
| 2007 | 44 | 56 |
| 2008 | 50 | 67 |
| 2009 | 64 | 65 |
| 2010 | 56 | 42 |
| 2011 | 68 | 49 |
| 2012 | 43 | 40 |
| 2013 | 62 | 39 |
| 2014 | 57 | 49 |
| 2015 | 58 | 36 |
| 2016 | 68 | 54 |
| 2017 | 57 | 35 |
| 2018 | 48 | 46 |
| 2019 | 57 | 47 |
| 2020 | 68 | 52 |
| 2021 | 52 | 37 |
| 2022 | 57 | 45 |
| 2023 | 38 | 36 |
| 2024 | 32 | 25 |
| 2025 | 24 | 28 |
| 2026 | 22 | 23 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Reducing non-linearity in a digital-to-time converter (DTC) when an input clock changes between lower and higher periods8 Sep 2026US 12,732,199 B2Ningbo Aura Semiconductor Co., Limited
- DTC linearization via mismatch-noise cancellation for digital fractional-N PLLs1 Sep 2026US 12,726,212 B2The Regents of the University of California
- High gain detector techniques for low bandwidth low noise phase-locked loops18 Aug 2026US 12,712,551 B2Texas Instruments Incorporated
- Gain calibration of digital-to-time converter (DTC) used in fractional frequency dividers18 Aug 2026US 12,712,553 B2Ningbo Aura Semiconductor Co., Limited
- Phase alignment system and method18 Aug 2026US 12,712,556 B2QUALCOMM Incorporated
- Clock generation apparatuses and methods24 Sep 2026US 2026/0291510 A1Intel Corporation
- System and method for phase alignment between multiple phase-locked loops circuits20 Aug 2026US 2026/0246470 A1Movandi Corporation
- Method and an apparatus for generating an output clock in a multi-loop pll system20 Aug 2026US 2026/0246473 A1Skyworks Solutions, Inc.
- Frequency-stable, low-noise timing signal generator having multiple mems resonators and nested-pll structure30 Jul 2026US 2026/0221977 A1
- Synchronized feed forward frequency decoder and scalable voltage controlled oscillator for fractional-n phase locked loop30 Jul 2026US 2026/0221978 A1Marvell Asia Pte Ltd
Most cited
By later US patents
- Digital compensation for wideband modulation of a phase locked loop frequency synthesizer313US 6,008,703 AMassachusetts Institute of Technology · 1999
- Dual-mode satellite/cellular phone with a frequency synthesizer224US 5,535,432 AEricsson GE Mobile Communications Inc. · 1996
- Method and apparatus for synchronizing auxiliary data and video data transmitted over a TMDS-like link170US 7,295,578 B12007
- Phase locked loop employing a fractional frequency synthesizer as a variable oscillator155US 6,710,951 B1Western Digital Technologies, Inc. · 2004
- Frequency synthesizer systems and methods for three-point modulation with a DC response147US 5,834,987 AErcisson Inc. · 1998