H03H 11/24
Frequency-independent attenuators
H03H11/24 (Frequency-independent attenuators) appears on 464 US grants and 315 published applications in this corpus.
Search patents in H03H- Granted patents
- 464
- Published applications
- 315
- Assignees
- 219
- Inventors
- 710
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 3 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 2 | 0 |
| 1981 | 3 | 0 |
| 1982 | 7 | 0 |
| 1983 | 4 | 0 |
| 1984 | 2 | 0 |
| 1985 | 8 | 0 |
| 1986 | 6 | 0 |
| 1987 | 11 | 0 |
| 1988 | 8 | 0 |
| 1989 | 7 | 0 |
| 1990 | 8 | 0 |
| 1991 | 8 | 0 |
| 1992 | 7 | 0 |
| 1993 | 3 | 0 |
| 1994 | 8 | 0 |
| 1995 | 8 | 0 |
| 1996 | 2 | 0 |
| 1997 | 4 | 0 |
| 1998 | 12 | 0 |
| 1999 | 9 | 0 |
| 2000 | 4 | 0 |
| 2001 | 11 | 4 |
| 2002 | 14 | 8 |
| 2003 | 11 | 10 |
| 2004 | 11 | 14 |
| 2005 | 7 | 8 |
| 2006 | 10 | 13 |
| 2007 | 12 | 11 |
| 2008 | 14 | 17 |
| 2009 | 9 | 14 |
| 2010 | 14 | 8 |
| 2011 | 8 | 15 |
| 2012 | 14 | 12 |
| 2013 | 9 | 9 |
| 2014 | 13 | 12 |
| 2015 | 10 | 12 |
| 2016 | 19 | 18 |
| 2017 | 16 | 15 |
| 2018 | 17 | 22 |
| 2019 | 19 | 14 |
| 2020 | 19 | 15 |
| 2021 | 11 | 4 |
| 2022 | 7 | 11 |
| 2023 | 8 | 19 |
| 2024 | 14 | 14 |
| 2025 | 12 | 9 |
| 2026 | 13 | 7 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Phase-shifting circuits and radio frequency microwave systems29 Sep 2026US 12,750,038 B2Etra Semiconductor (Suzhou) Co., Ltd.
- Fine trimming of a radio frequency gain by modulating the periphery of a radio frequency switch29 Sep 2026US 12,750,039 B2Skyworks Solutions, Inc.
- Circuit for attenuating signal received through antenna to improve SNR, electronic device including the same, and method for controlling the same22 Sep 2026US 12,744,515 B2Samsung Electronics Co., Ltd.
- Differential digital step attenuators with leakage cancellation8 Sep 2026US 12,732,149 B2BAE Systems Information and Electronic Systems Integration Inc.
- Tunable attenuator8 Sep 2026US 12,732,163 B2NXP B. V.
- Multi-level digital step attenuator and digital step attenuation device20 Aug 2026US 2026/0246452 A1Mediatek Inc.
- Glitch reduction in phase shifters30 Jul 2026US 2026/0221958 A1pSemi Corporation
- Variable attenuator, step attenuator, and test apparatus18 Jun 2026US 2026/0169033 A1Advantest Corporation
- Tunable resonator7 May 2026US 2026/0129963 A1Taiwan Semiconductor Manufacturing Company.Ltd
- Phase-shifting circuits and radio frequency microwave systems5 Mar 2026US 2026/0066879 A1Etra Semiconductor (Suzhou) Co., Ltd.
Most cited
By later US patents
- Digitally controlled element sizing220US 5,194,765 AAT&T Bell Laboratories · 1993
- Output circuit having transistor monitor for matching output impedance to load impedance204US 4,719,369 AHitachi, Ltd. · 1988
- Electronically reconfigurable digital pad attenuator using segmented field effect transistors90US 5,049,841 AGeneral Electric Company · 1991
- Attenuator circuit apparatus65US 5,448,207 ASony Corporation · 1995
- Digitally controlled element sizing62US 5,298,800 AAT&T Bell Laboratories · 1994