H04B 1/1638
Special circuits to enhance selectivity of receivers not otherwise provided for
Official title: {Special circuits to enhance selectivity of receivers not otherwise provided for (resonant circuits H03H)}
H04B1/1638 (Special circuits to enhance selectivity of receivers not otherwise provided for) appears on 173 US grants and 166 published applications in this corpus.
Search patents in H04B- Granted patents
- 173
- Published applications
- 166
- Assignees
- 115
- Inventors
- 401
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 0 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 0 | 0 |
| 1991 | 4 | 0 |
| 1992 | 3 | 0 |
| 1993 | 0 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 0 | 0 |
| 1999 | 0 | 0 |
| 2000 | 0 | 0 |
| 2001 | 1 | 0 |
| 2002 | 2 | 0 |
| 2003 | 1 | 0 |
| 2004 | 0 | 0 |
| 2005 | 0 | 2 |
| 2006 | 0 | 0 |
| 2007 | 0 | 0 |
| 2008 | 0 | 3 |
| 2009 | 1 | 4 |
| 2010 | 2 | 2 |
| 2011 | 2 | 6 |
| 2012 | 3 | 10 |
| 2013 | 10 | 13 |
| 2014 | 10 | 8 |
| 2015 | 15 | 10 |
| 2016 | 11 | 10 |
| 2017 | 9 | 10 |
| 2018 | 9 | 11 |
| 2019 | 14 | 8 |
| 2020 | 11 | 11 |
| 2021 | 10 | 10 |
| 2022 | 7 | 6 |
| 2023 | 12 | 15 |
| 2024 | 8 | 8 |
| 2025 | 6 | 7 |
| 2026 | 10 | 12 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- Synchronization architecture for inter-chiplet communication within three-dimensional integrated circuit27 Aug 2026US 2026/0254471 A1Taiwan Semiconductor Manufacturing Company.Ltd
- A local oscillator (lo) double edge-tuning iq imbalance calibration technique for modern-day transceivers13 Aug 2026US 2026/0238162 A1King Fahd University of Petroleum and Minerals
- Receiver circuits including asymmetric bandwidth compensation circuit9 Jul 2026US 2026/0197021 A1Samsung Electronics Co., Ltd.
Most cited
By later US patents
- Systems and methods for optimizing broadcasts215US 8,554,264 B12013
- AM radio receiver with switchable IF bandwidth207US 5,303,413 ARobert Bosch GmbH · 1994
- Single chip radio receiver with one off-chip filter91US 5,031,233 AAT&E Corporation · 1991
- Apparatus for monitoring television receivers57US 4,027,332 ATime and Frequency Technology Inc. · 1977
- Varying bandwidth digital signal detector31US 5,012,490 AAT&T Bell Laboratories · 1991