H04B 2203/5425
Improving s/n by matching impedance, noise reduction, gain control
Official title: improving S/N by matching impedance, noise reduction, gain control
H04B2203/5425 (Improving s/n by matching impedance, noise reduction, gain control) appears on 487 US grants and 355 published applications in this corpus.
Search patents in H04B- Granted patents
- 487
- Published applications
- 355
- Assignees
- 267
- Inventors
- 748
- Latest grant
- 11 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 5 | 0 |
| 1978 | 6 | 0 |
| 1979 | 2 | 0 |
| 1980 | 1 | 0 |
| 1981 | 1 | 0 |
| 1982 | 5 | 0 |
| 1983 | 4 | 0 |
| 1984 | 4 | 0 |
| 1985 | 6 | 0 |
| 1986 | 8 | 0 |
| 1987 | 9 | 0 |
| 1988 | 4 | 0 |
| 1989 | 11 | 0 |
| 1990 | 6 | 0 |
| 1991 | 3 | 0 |
| 1992 | 3 | 0 |
| 1993 | 7 | 0 |
| 1994 | 4 | 0 |
| 1995 | 4 | 0 |
| 1996 | 8 | 0 |
| 1997 | 4 | 0 |
| 1998 | 9 | 0 |
| 1999 | 11 | 0 |
| 2000 | 9 | 0 |
| 2001 | 9 | 6 |
| 2002 | 12 | 14 |
| 2003 | 12 | 16 |
| 2004 | 12 | 21 |
| 2005 | 11 | 30 |
| 2006 | 24 | 20 |
| 2007 | 18 | 18 |
| 2008 | 10 | 17 |
| 2009 | 8 | 10 |
| 2010 | 14 | 11 |
| 2011 | 14 | 11 |
| 2012 | 21 | 24 |
| 2013 | 17 | 13 |
| 2014 | 16 | 17 |
| 2015 | 21 | 34 |
| 2016 | 27 | 20 |
| 2017 | 24 | 17 |
| 2018 | 22 | 19 |
| 2019 | 23 | 19 |
| 2020 | 16 | 7 |
| 2021 | 9 | 4 |
| 2022 | 4 | 4 |
| 2023 | 2 | 1 |
| 2024 | 3 | 1 |
| 2025 | 1 | 1 |
By publication year. Applications have been published since 2001.
Recent patents
- Mobile devices, mobile systems and operating methods thereof11 Nov 2025US 12,470,251 B2Samsung Electronics Co., Ltd.
- Method and apparatus for surveying remote sites via guided wave communications25 Jun 2024US 12,021,578 B2AT&T Intellectual Property I, L. P.
- Systems and methods for measuring characteristics of a welding cable with a low power transceiver27 Feb 2024US 11,911,858 B2Illinois Tool Works Inc.
- Method for communication between transceivers of module level devices within a photovaltaic module level monitoring system16 Jan 2024US 11,876,483 B2Fronius International GmbH
- Mobile devices, mobile systems and operating methods thereof19 Dec 2023US 11,848,690 B2Samsung Electronics Co., Ltd.
- Method and apparatus for controlling communication signal of photovoltaic power generation system30 Oct 2025US 2025/0337454 A1Hanwha Solutions Corporation
- Mobile devices, mobile systems and operating methods thereof29 Feb 2024US 2024/0072845 A1Samsung Electronics Co., Ltd.
- Adaptive filters in vehicle power line communication14 Dec 2023US 2023/0403045 A1GM Global Technology Operations LLC
- Dual cavity, low power, outdoor combination line amplifier package for cable telecommunication systems20 Oct 2022US 2022/0337287 A13Mu LLC
- Method for communication between transceivers of module level devices within a photovaltaic module level monitoring system6 Oct 2022US 2022/0317168 A1Fronius International GmbH
Most cited
By later US patents
- Highly reliable power line communications system552US 6,441,723 B1General Electric Company · 2002
- Transmission medium having multiple cores and methods for use therewith526US 9,490,869 B1AT&T Intellectual Property I, L. P. · 2016
- Repeater for transmission system for controlling and determining the status of electrical devices from remote locations513US 5,848,054 ALutron Electronics Co., Inc. · 1998
- Modem for pseudo noise communication on A.C. lines407US 4,835,517 AThe University of British Columbia · 1989
- Apparatus and method for implementing digital communications on a power line327US 6,278,357 B1Electric Power Research Institute, Inc. · 2001