G01S 3/46
Using antennas spaced apart and measuring phase or time difference between signals
Official title: using antennas spaced apart and measuring phase or time difference between signals therefrom, i.e. path-difference systems
G01S3/46 (Using antennas spaced apart and measuring phase or time difference between signals) appears on 1,055 US grants and 948 published applications in this corpus.
Search patents in G01S- Granted patents
- 1,055
- Published applications
- 948
- Assignees
- 491
- Inventors
- 2,091
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 7 | 0 |
| 1978 | 9 | 0 |
| 1979 | 8 | 0 |
| 1980 | 5 | 0 |
| 1981 | 6 | 0 |
| 1982 | 3 | 0 |
| 1983 | 6 | 0 |
| 1984 | 5 | 0 |
| 1985 | 4 | 0 |
| 1986 | 3 | 0 |
| 1987 | 8 | 0 |
| 1988 | 5 | 0 |
| 1989 | 7 | 0 |
| 1990 | 7 | 0 |
| 1991 | 6 | 0 |
| 1992 | 4 | 0 |
| 1993 | 7 | 0 |
| 1994 | 11 | 0 |
| 1995 | 12 | 0 |
| 1996 | 11 | 0 |
| 1997 | 10 | 0 |
| 1998 | 14 | 0 |
| 1999 | 13 | 0 |
| 2000 | 12 | 0 |
| 2001 | 25 | 1 |
| 2002 | 21 | 6 |
| 2003 | 10 | 23 |
| 2004 | 21 | 13 |
| 2005 | 13 | 16 |
| 2006 | 15 | 17 |
| 2007 | 10 | 15 |
| 2008 | 12 | 15 |
| 2009 | 12 | 17 |
| 2010 | 11 | 20 |
| 2011 | 18 | 24 |
| 2012 | 18 | 22 |
| 2013 | 17 | 16 |
| 2014 | 16 | 27 |
| 2015 | 25 | 25 |
| 2016 | 21 | 33 |
| 2017 | 31 | 30 |
| 2018 | 26 | 48 |
| 2019 | 60 | 60 |
| 2020 | 54 | 78 |
| 2021 | 74 | 108 |
| 2022 | 85 | 84 |
| 2023 | 72 | 88 |
| 2024 | 80 | 63 |
| 2025 | 74 | 62 |
| 2026 | 40 | 37 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Enhancing reconfigurable intelligent surface security with angle of arrival and angle of departure based full path integrity validation22 Sep 2026US 12,745,088 B2Dell Products L. P.
- MIMO sensor, method for determining direction-of-arrival approximation degree, and target information matching method15 Sep 2026US 12,736,623 B2Calterah Semiconductor Technology (Shanghai) Co., Ltd.
- Communication techniques using passive beacons15 Sep 2026US 12,739,593 B2Apple Inc.
- Precoding method and apparatus, user equipment, RIS array, base station and storage medium8 Sep 2026US 12,732,234 B2Beijing Xiaomi Mobile Software Co., Ltd.
- Autonomous moving apparatus25 Aug 2026US 12,717,345 B2Rohm Co., Ltd.
- Systems, methods and apparatus for determining object position17 Sep 2026US 2026/0276772 A1
- Unmanned vehicle recognition and threat management17 Sep 2026US 2026/0279204 A1Digital Global Systems, Inc.
- Reception device, reception method, and transmission/reception system27 Aug 2026US 2026/0254132 A1Sony Semiconductor Solutions Corporation
- A method for controlling a cover enhancing device controlling node, a method for controlling a coverage enhancing device, a coverage enhancing device controlling node, and a coverage enhancing device6 Aug 2026US 2026/0230841 A1Sony Group Corporation
- Method and apparatus for determining position of client, and processor30 Jul 2026US 2026/0222770 A1Tp-Link Corporation Limited
Most cited
By later US patents
- Cellular telephone location system707US 5,327,144 AAssociated RT, Inc. · 1994
- Estimating angle measurements for source tracking using a phased array system371US 9,989,633 B1Cypress Semiconductor Corporation · 2018
- Direction finding localization system258US 4,728,959 AVentana Sciences Inc. · 1988
- Apparatus and method for determining angles-of-arrival and polarization of incoming RF signals249US 5,936,575 AScience and Applied Technology, Inc. · 1999
- System for locating a source of bursty transmissions cross reference to related applications228US 5,608,410 AAssociated RT, Inc. · 1997