H03D 1/04
Modifications of demodulators to reduce interference by undesired signals
H03D1/04 (Modifications of demodulators to reduce interference by undesired signals) appears on 49 US grants and 27 published applications in this corpus.
Search patents in H03D- Granted patents
- 49
- Published applications
- 27
- Assignees
- 34
- Inventors
- 92
- Latest grant
- 15 Mar 2022
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 1 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 1 | 0 |
| 1995 | 0 | 0 |
| 1996 | 4 | 0 |
| 1997 | 1 | 0 |
| 1998 | 1 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 2 | 0 |
| 2002 | 0 | 0 |
| 2003 | 1 | 0 |
| 2004 | 1 | 2 |
| 2005 | 0 | 0 |
| 2006 | 1 | 3 |
| 2007 | 0 | 1 |
| 2008 | 0 | 2 |
| 2009 | 1 | 0 |
| 2010 | 4 | 4 |
| 2011 | 0 | 1 |
| 2012 | 2 | 2 |
| 2013 | 5 | 3 |
| 2014 | 3 | 2 |
| 2015 | 4 | 2 |
| 2016 | 3 | 0 |
| 2017 | 1 | 0 |
| 2018 | 0 | 2 |
| 2019 | 2 | 2 |
| 2020 | 2 | 0 |
| 2021 | 0 | 1 |
| 2022 | 1 | 0 |
By publication year. Applications have been published since 2001.
Recent patents
- Processing amplitude modulation signals with noise estimation15 Mar 2022US 11,277,287 B2NXP B. V.
- Passive mixer with reduced second order intermodulation3 Nov 2020US 10,826,433 B2Telefonaktiebolaget LM Ericsson (publ)
- Filter circuit21 Apr 2020US 10,630,262 B2QUALCOMM Incorporated
- Passive mixer with reduced second order intermodulation10 Sep 2019US 10,411,650 B2Telefonaktiebolaget LM Ericsson (publ)
- Spur cancellation system for modems5 Feb 2019US 10,200,070 B2Cypress Semiconductor Corporation
- Processing amplitude modulation signals with noise estimation30 Sep 2021US 2021/0306188 A1NXP B. V.
- Passive mixer with reduced second order intermodulation12 Dec 2019US 2019/0379327 A1Telefonaktiebolaget LM Ericsson (publ)
- Filter circuit24 Jan 2019US 2019/0028087 A1QUALCOMM Incorporated
- Spur cancellation system for modems19 Jul 2018US 2018/0205402 A1Cypress Semiconductor Corporation
- Passive mixer with reduced second order intermodulation15 Mar 2018US 2018/0076769 A1Telefonaktiebolaget LM Ericsson (publ)
Most cited
By later US patents
- Method and apparatus for the cancellation of interference in electrical systems185US 5,541,959 A1996
- Synchronous demodulator110US 5,015,963 AThe United States of America as represented by the Administrator of the National Aeronautics and Space Administration · 1991
- Apparatus and method for reducing harmonic interference generated by a clock signal34US 5,263,055 AMotorola, Inc. · 1993
- Variable time delay control structure for channel matching23US 8,094,764 B2BAE Systems Information and Electronic Systems Integration Inc. · 2012
- Coherent AM demodulator using a weighted LSB/USB sum for interference mitigation15US 7,127,008 B2iBiquity Digital Corporation · 2006