H04B 1/1676
Of the sum or difference signal
Official title: {of the sum or difference signal}
H04B1/1676 (Of the sum or difference signal) appears on 55 US grants and 40 published applications in this corpus.
Search patents in H04B- Granted patents
- 55
- Published applications
- 40
- Assignees
- 46
- Inventors
- 106
- Latest grant
- 24 Mar 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1980 | 3 | 0 |
| 1981 | 0 | 0 |
| 1982 | 1 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 2 | 0 |
| 1987 | 3 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 1 | 0 |
| 1993 | 1 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 1 | 0 |
| 1998 | 0 | 0 |
| 1999 | 2 | 0 |
| 2000 | 0 | 0 |
| 2001 | 0 | 1 |
| 2002 | 0 | 2 |
| 2003 | 0 | 3 |
| 2004 | 1 | 0 |
| 2005 | 0 | 0 |
| 2006 | 2 | 3 |
| 2007 | 3 | 2 |
| 2008 | 0 | 0 |
| 2009 | 0 | 1 |
| 2010 | 3 | 1 |
| 2011 | 1 | 2 |
| 2012 | 0 | 1 |
| 2013 | 2 | 6 |
| 2014 | 0 | 2 |
| 2015 | 5 | 0 |
| 2016 | 4 | 2 |
| 2017 | 0 | 1 |
| 2018 | 2 | 1 |
| 2019 | 0 | 0 |
| 2020 | 1 | 2 |
| 2021 | 1 | 4 |
| 2022 | 2 | 1 |
| 2023 | 2 | 3 |
| 2024 | 2 | 2 |
| 2025 | 1 | 0 |
| 2026 | 1 | 0 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Full duplex adaptive array24 Mar 2026US 12,587,352 B2TM IP Holdings, LLC
- Determining LO leakage and quadrature error parameters of an RF front end29 Jul 2025US 12,375,115 B2Analog Devices, Inc.
- Receiver circuitry having a transistor pair for input voltage clipping23 Jan 2024US 11,881,884 B2Xilinx, Inc.
- Digital radio frequency transmitter and wireless communication device including the same9 Jan 2024US 11,870,471 B2Samsung Electronics Co., Ltd.
- Method of demodulation of a stereophonic signal28 Feb 2023US 11,595,068 B2Continental Automotive France
- Digital cancellation of cim3 distortion for digital transmitters10 Oct 2024US 2024/0340030 A1Avago Technologies International Sales Pte. Limited
- Full duplex adaptive array8 Aug 2024US 2024/0267195 A1TM IP Holdings, LLC
- Receiver circuitry having a transistor pair for input voltage clipping21 Sep 2023US 2023/0299802 A1Xilinx, Inc.
- Digital radio frequency transmitter and wireless communication device including the same25 May 2023US 2023/0163790 A1Samsung Electronics Co., Ltd.
- Determining lo leakage and quadrature error parameters of an rf front end25 May 2023US 2023/0163798 A1Analog Devices, Inc.
Most cited
By later US patents
- Noise suppressing apparatus capable of preventing deterioration in high frequency signal characteristic after noise suppression and in balanced signal transmitting system32US 5,982,901 AMatsushita Electric Industrial Co., Ltd. · 1999
- Noise reduction apparatus in an FM stereo tuner30US 5,067,157 APioneer Electronic Corporation · 1991
- Systems and methods for independent and control-isolated audio processing (ICIAP)19US 9,351,077 B1L-3 Communications Integrated Systems L.P. · 2016
- Prediction-based FM stereo radio noise reduction16US 9,191,045 B2Dolby International AB · 2015
- Noise reduction apparatus in an FM stereo tuner15US 5,253,299 APioneer Electronic Corporation · 1993