H03D 1/00
Demodulation of amplitude-modulated oscillations
Official title: Demodulation of amplitude-modulated oscillations (H03D5/00, H03D9/00, H03D11/00 take precedence)
H03D1/00 (Demodulation of amplitude-modulated oscillations) appears on 791 US grants and 310 published applications in this corpus.
Search patents in H03D- Granted patents
- 791
- Published applications
- 310
- Assignees
- 350
- Inventors
- 1,154
- Latest grant
- 19 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 26 | 0 |
| 1977 | 18 | 0 |
| 1978 | 13 | 0 |
| 1979 | 29 | 0 |
| 1980 | 9 | 0 |
| 1981 | 20 | 0 |
| 1982 | 17 | 0 |
| 1983 | 18 | 0 |
| 1984 | 18 | 0 |
| 1985 | 15 | 0 |
| 1986 | 21 | 0 |
| 1987 | 20 | 0 |
| 1988 | 18 | 0 |
| 1989 | 27 | 0 |
| 1990 | 19 | 0 |
| 1991 | 12 | 0 |
| 1992 | 16 | 0 |
| 1993 | 12 | 0 |
| 1994 | 19 | 0 |
| 1995 | 15 | 0 |
| 1996 | 16 | 0 |
| 1997 | 27 | 0 |
| 1998 | 21 | 0 |
| 1999 | 12 | 0 |
| 2000 | 6 | 0 |
| 2001 | 12 | 1 |
| 2002 | 12 | 10 |
| 2003 | 16 | 12 |
| 2004 | 13 | 12 |
| 2005 | 9 | 7 |
| 2006 | 13 | 23 |
| 2007 | 13 | 9 |
| 2008 | 6 | 19 |
| 2009 | 14 | 14 |
| 2010 | 21 | 18 |
| 2011 | 14 | 13 |
| 2012 | 26 | 17 |
| 2013 | 20 | 20 |
| 2014 | 22 | 22 |
| 2015 | 20 | 13 |
| 2016 | 23 | 12 |
| 2017 | 12 | 12 |
| 2018 | 10 | 11 |
| 2019 | 13 | 12 |
| 2020 | 11 | 6 |
| 2021 | 10 | 10 |
| 2022 | 9 | 10 |
| 2023 | 7 | 7 |
| 2024 | 7 | 9 |
| 2025 | 10 | 8 |
| 2026 | 4 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03D 1/22Homodyne or synchrodyne circuits463
- H03D 1/14Demodulation of amplitude-modulated oscillations: by means of non-linear elements having more than113
- H03D 1/02Details97
- H03D 1/08Demodulation of amplitude-modulated oscillations: by means of non-linear two-pole elements87
- H03D 1/26Demodulation of amplitude-modulated oscillations: by means of transit-time tubes0
- H03D 1/28Demodulation of amplitude-modulated oscillations: by deflecting an electron beam in a discharge0
Recent patents
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- Measurement method with synchronous subsampling30 Dec 2025US 12,509,032 B2Safran Electronics & Defense
- Wireless power reception device and wireless communication method3 Sep 2026US 2026/0261150 A1Dolby Hybrid Technologies, LLC
- Fully differential cmos demodulator23 Apr 2026US 2026/0112998 A1NXP USA, Inc.
- Digital envelope detector circuit, corresponding system-on-chip and method of operation26 Mar 2026US 2026/0088762 A1STMicroelectronics International N. V.
- Multi-path radio frequency system using local oscillation signals with frequencies having non-integer multiple relationship that are generated from same reference oscillation signal and associated local oscillation signal generation method7 Aug 2025US 2025/0253829 A1Mediatek Inc.
- Isolation communications channel using direct demodulation and data-edge encoding31 Jul 2025US 2025/0247066 A1Skyworks Solutions, Inc.
Most cited
By later US patents
- Digital radio frequency receiver350US 4,893,316 AMotorola, Inc. · 1990
- Method and apparatus for the cancellation of interference in electrical systems185US 5,541,959 A1996
- Phase and gain error control system for use in an I/Q direct conversion receiver160US 5,249,203 ARockwell International Corporation · 1993
- Universal platform for software defined radio148US 6,823,181 B1Sony Corporation · 2004
- Signal transmission system and a transmitter and a receiver for use in the system138US 4,768,187 AU. S. Philips Corporation · 1988