G01S 3/52
Using a receiving antenna moving, or appearing to move, in a cyclic
Official title: using a receiving antenna moving, or appearing to move, in a cyclic path to produce a Doppler variation of frequency of the received signal
G01S3/52 (Using a receiving antenna moving, or appearing to move, in a cyclic) appears on 56 US grants and 34 published applications in this corpus.
Search patents in G01S- Granted patents
- 56
- Published applications
- 34
- Assignees
- 39
- Inventors
- 98
- Latest grant
- 18 Nov 2025
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 2 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 1 | 0 |
| 1994 | 2 | 0 |
| 1995 | 0 | 0 |
| 1996 | 1 | 0 |
| 1997 | 0 | 0 |
| 1998 | 1 | 0 |
| 1999 | 2 | 0 |
| 2000 | 3 | 0 |
| 2001 | 2 | 0 |
| 2002 | 2 | 3 |
| 2003 | 2 | 2 |
| 2004 | 4 | 2 |
| 2005 | 0 | 3 |
| 2006 | 1 | 0 |
| 2007 | 1 | 7 |
| 2008 | 0 | 0 |
| 2009 | 6 | 3 |
| 2010 | 2 | 0 |
| 2011 | 2 | 4 |
| 2012 | 0 | 0 |
| 2013 | 0 | 0 |
| 2014 | 1 | 1 |
| 2015 | 0 | 2 |
| 2016 | 1 | 1 |
| 2017 | 2 | 0 |
| 2018 | 2 | 1 |
| 2019 | 1 | 0 |
| 2020 | 2 | 1 |
| 2021 | 0 | 1 |
| 2022 | 2 | 0 |
| 2023 | 0 | 2 |
| 2024 | 0 | 0 |
| 2025 | 1 | 0 |
| 2026 | 0 | 1 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Doppler-nulling and two-way timing and ranging (spatial awareness)18 Nov 2025US 12,474,431 B2Rockwell Collins, Inc.
- Beam direction selection for a radio communications device27 Sep 2022US 11,456,788 B2Telefonaktiebolaget LM Ericsson (publ)
- First communication device and methods thereby for initiating transmission based on an obtained set of correspondences22 Mar 2022US 11,283,499 B2Telefonaktiebolaget LM Ericsson (publ)
- Characterizing multipath delays in antenna array and synthetic aperture radar systems17 Nov 2020US 10,838,035 B2Massachusetts Institute of Technology
- Direction finding using signal power25 Feb 2020US 10,571,544 B2CRFS Limited
- Method and apparatus for determining at least one characteristic of a signal propagation path6 Aug 2026US 2026/0227482 A1Focal Point Positioning Limited
- Doppler-nulling and two-way timing and ranging (spatial awareness)14 Sep 2023US 2023/0288519 A1Rockwell Collins, Inc.
- Determining location information using cyclospectral detection23 Feb 2023US 2023/0058234 A1
- Beam direction selection for a radio communications device2 Sep 2021US 2021/0270927 A1Telefonaktiebolaget LM Ericsson (publ)
- First communication device and methods thereby for initiating transmission based on an obtained set of correspondences20 Feb 2020US 2020/0059280 A1Telefonaktiebolaget LM Ericsson (publ)
Most cited
By later US patents
- Location of the radio frequency emitting targets228US 6,339,396 B12002
- Location of radio frequency emitting targets216US 6,628,231 B2Lockheed Martin Corporation · 2003
- Article locator system185US 6,788,199 B2Eureka Technology Partners, LLC · 2004
- Phase arrays exploiting geometry phase and methods of creating such arrays77US 7,714,782 B22010
- Apparatus and method for locating an emitter using RF carrier or PRF measurement ratios40US 6,163,297 ALitton Systems, Inc. · 2000