H04L 2027/0069
Loop filters
Official title: {Loop filters}
H04L2027/0069 (Loop filters) appears on 154 US grants and 99 published applications in this corpus.
Search patents in H04L- Granted patents
- 154
- Published applications
- 99
- Assignees
- 92
- Inventors
- 291
- Latest grant
- 9 Jun 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 3 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 6 | 0 |
| 2000 | 7 | 0 |
| 2001 | 1 | 1 |
| 2002 | 2 | 2 |
| 2003 | 5 | 2 |
| 2004 | 6 | 5 |
| 2005 | 3 | 7 |
| 2006 | 5 | 2 |
| 2007 | 4 | 5 |
| 2008 | 3 | 8 |
| 2009 | 6 | 7 |
| 2010 | 7 | 12 |
| 2011 | 11 | 6 |
| 2012 | 11 | 9 |
| 2013 | 7 | 4 |
| 2014 | 8 | 4 |
| 2015 | 7 | 2 |
| 2016 | 5 | 3 |
| 2017 | 2 | 2 |
| 2018 | 6 | 4 |
| 2019 | 3 | 0 |
| 2020 | 3 | 4 |
| 2021 | 2 | 3 |
| 2022 | 5 | 2 |
| 2023 | 1 | 1 |
| 2024 | 1 | 1 |
| 2025 | 2 | 2 |
| 2026 | 1 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Linear prediction to suppress spurs in a digital phase-locked loop9 Jun 2026US 12,652,055 B2Skyworks Solutions, Inc.
- System and method for remote digital time transfer23 Sep 2025US 12,425,033 B2National Research Council of Canada
- Linear prediction to suppress spurs in a digital phase-locked loop7 Jan 2025US 12,191,866 B2
- Harmonic filters for polar modulators2 Apr 2024US 11,949,546 B2Eridan Communications, Inc.
- Method and apparatus for modulating/demodulating an FSK signal30 May 2023US 11,665,032 B2Korea Advanced Institute of Science and Technology
- Kalman filter based phase-locked loop with re-encoding based phase detector16 Apr 2026US 2026/0106782 A1Silicon Laboratories Inc.
- Linear prediction to suppress spurs in a digital phase-locked loop26 Jun 2025US 2025/0211241 A1Skyworks Solutions, Inc.
- Kalman filter based phase-locked loop for phase-shift keying or quadrature amplitude modulated signals13 Mar 2025US 2025/0088901 A1Silicon Laboratories Inc.
- System and method for remote digital time transfer13 Jun 2024US 2024/0195426 A1National Research Council of Canada
- Linear prediction to suppress spurs in a digital phase-locked loop30 Mar 2023US 2023/0094645 A1
Most cited
By later US patents
- Carrier recovery circuit for offset QPSK demodulators161US 4,871,975 ANEC Corporation · 1989
- Digital filter system, carrier reproduction circuit using the digital filter system, and demodulation circuit using the carrier reproduction circuit141US 5,999,574 AIcom Incorporated · 1999
- Single sideband quadricorrelator116US 4,470,145 AHughes Aircraft Company · 1984
- Programmable loop filter for carrier recovery in a radio receiver63US 6,018,556 ADSP Group Ltd. · 2000
- Receiver with enhanced clock and data recovery55US 8,929,496 B2Rambus Inc. · 2015