H03D 3/02
Demodulation of angle-, frequency- or phase- modulated oscillations: by detecting phase difference
Official title: by detecting phase difference between two signals obtained from input signal (H03D3/28 - H03D3/32 take precedence; {muting in frequency-modulation receivers H03G3/28}; limiting arrangements H03G11/00)
H03D3/02 (Demodulation of angle-, frequency- or phase- modulated oscillations: by detecting phase difference) appears on 498 US grants and 149 published applications in this corpus.
Search patents in H03D- Granted patents
- 498
- Published applications
- 149
- Assignees
- 237
- Inventors
- 722
- Latest grant
- 29 Oct 2024
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 26 | 0 |
| 1977 | 15 | 0 |
| 1978 | 14 | 0 |
| 1979 | 7 | 0 |
| 1980 | 9 | 0 |
| 1981 | 16 | 0 |
| 1982 | 6 | 0 |
| 1983 | 8 | 0 |
| 1984 | 18 | 0 |
| 1985 | 17 | 0 |
| 1986 | 18 | 0 |
| 1987 | 12 | 0 |
| 1988 | 8 | 0 |
| 1989 | 13 | 0 |
| 1990 | 8 | 0 |
| 1991 | 8 | 0 |
| 1992 | 12 | 0 |
| 1993 | 12 | 0 |
| 1994 | 11 | 0 |
| 1995 | 22 | 0 |
| 1996 | 11 | 0 |
| 1997 | 19 | 0 |
| 1998 | 15 | 0 |
| 1999 | 12 | 0 |
| 2000 | 15 | 0 |
| 2001 | 8 | 10 |
| 2002 | 5 | 11 |
| 2003 | 10 | 12 |
| 2004 | 9 | 8 |
| 2005 | 9 | 10 |
| 2006 | 6 | 6 |
| 2007 | 8 | 5 |
| 2008 | 11 | 11 |
| 2009 | 5 | 7 |
| 2010 | 8 | 3 |
| 2011 | 7 | 6 |
| 2012 | 8 | 3 |
| 2013 | 6 | 0 |
| 2014 | 9 | 5 |
| 2015 | 5 | 6 |
| 2016 | 4 | 3 |
| 2017 | 6 | 6 |
| 2018 | 4 | 10 |
| 2019 | 11 | 9 |
| 2020 | 9 | 5 |
| 2021 | 3 | 3 |
| 2022 | 7 | 8 |
| 2023 | 4 | 2 |
| 2024 | 4 | 0 |
By publication year. Applications have been published since 2001.
Subgroups
Granted patents
- H03D 3/24Modifications of demodulators to reject or remove amplitude variations by means of220
- H03D 3/04By counting or integrating cycles of oscillations69
- H03D 3/06By combining signals additively or in product demodulators69
- H03D 3/18By means of synchronous gating arrangements63
- H03D 3/22By means of active elements with more than two electrodes to which48
Recent patents
- System and method for phase locked loop (PLL) based removal of modulated interference29 Oct 2024US 12,132,446 B1Rockwell Collins, Inc.
- Filter that minimizes in-band noise and maximizes detection sensitivity of exponentially-modulated signals23 Jul 2024US 12,047,049 B2Dynaspot Corp.
- Method and control unit for demodulation2 Apr 2024US 11,946,949 B2Technische UniversitäT Wien
- Demodulator and wireless receiver including the same9 Jan 2024US 11,870,394 B2Sony Semiconductor Solutions Corporation
- Phase demodulator with negative feedback loop5 Dec 2023US 11,837,996 B2Electronics and Telecommunications Research Institute
- Physiological signal detection system12 Oct 2023US 2023/0327606 A1National Taiwan University of Science and Technology
- Filter that minimizes in-band noise and maximizes detection sensitivity of exponentially-modulated signals29 Jun 2023US 2023/0208401 A1Dynaspot Corp.
- Phase demodulator with negative feedback loop22 Sep 2022US 2022/0302909 A1Electronics and Telecommunications Research Institute
- Frequency-voltage conversion circuit, semiconductor device, and memory system15 Sep 2022US 2022/0293196 A1Kioxia Corporation
- Accelerated channel scanning with a two-point-modulated phase-locked loop4 Aug 2022US 2022/0247355 A1QUALCOMM Incorporated
Most cited
By later US patents
- Adaptive data rate modem346US 5,541,955 APericle Communications Company · 1996
- Phase lock loop multitone interference canceling system199US 4,027,264 AThe United States of America as represented by the Secretary of the Army · 1977
- Multiple reuse of an FM band195US 4,992,747 A1991
- Multiple reuse of an FM band186US 4,859,958 A1989
- Method and apparatus for the cancellation of interference in electrical systems185US 5,541,959 A1996