G01S 3/16
Using amplitude comparison of signals derived sequentially from receiving antennas or antenna
Official title: using amplitude comparison of signals derived sequentially from receiving antennas or antenna systems having differently-oriented directivity characteristics or from an antenna system having periodically-varied orientation of directivity characteristic
G01S3/16 (Using amplitude comparison of signals derived sequentially from receiving antennas or antenna) appears on 223 US grants and 196 published applications in this corpus.
Search patents in G01S- Granted patents
- 223
- Published applications
- 196
- Assignees
- 167
- Inventors
- 479
- Latest grant
- 11 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 3 | 0 |
| 1978 | 1 | 0 |
| 1979 | 2 | 0 |
| 1980 | 2 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 1 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 0 | 0 |
| 1989 | 3 | 0 |
| 1990 | 1 | 0 |
| 1991 | 3 | 0 |
| 1992 | 2 | 0 |
| 1993 | 3 | 0 |
| 1994 | 5 | 0 |
| 1995 | 2 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 4 | 0 |
| 1999 | 1 | 0 |
| 2000 | 1 | 0 |
| 2001 | 5 | 0 |
| 2002 | 5 | 3 |
| 2003 | 2 | 3 |
| 2004 | 4 | 3 |
| 2005 | 2 | 3 |
| 2006 | 2 | 7 |
| 2007 | 5 | 0 |
| 2008 | 2 | 5 |
| 2009 | 2 | 4 |
| 2010 | 4 | 7 |
| 2011 | 3 | 6 |
| 2012 | 4 | 3 |
| 2013 | 5 | 8 |
| 2014 | 4 | 8 |
| 2015 | 10 | 11 |
| 2016 | 4 | 6 |
| 2017 | 14 | 7 |
| 2018 | 12 | 22 |
| 2019 | 11 | 13 |
| 2020 | 18 | 13 |
| 2021 | 15 | 12 |
| 2022 | 7 | 12 |
| 2023 | 13 | 15 |
| 2024 | 13 | 9 |
| 2025 | 10 | 7 |
| 2026 | 6 | 9 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Drone encroachment avoidance monitor11 Aug 2026US 12,705,991 B2Mydefence A/S
- Radio wave arrival direction estimation device, radio wave arrival direction estimation method, and radio wave arrival direction estimation program16 Jun 2026US 12,656,442 B2NTT, Inc.
- Direction determining for over-the-air testing of a radio transceiver device19 May 2026US 12,631,709 B2Telefonaktiebolaget LM Ericsson (publ)
- Drone and controller detector, direction finder, and tracker28 Apr 2026US 12,613,300 B2Drone Go Home, LLC
- GPS spoofer direction finding and geolocation14 Apr 2026US 12,601,845 B2BAE Systems Information and Electronic Systems Integration Inc.
- System for detecting the position of a target located within a reference space20 Aug 2026US 2026/0243885 A1Adant Technologies, Inc.
- Antenna module for a receiver for mobile reception of signals of a global positioning satellite13 Aug 2026US 2026/0237888 A1FUBA Automotive Electronics GmbH
- System and method for auto detecting travel direction of authorized users through an access point of a security system25 Jun 2026US 2026/0179422 A1Honeywell International Inc.
- Determining a bearing to a radio beacon11 Jun 2026US 2026/0160847 A1Rockwell Collins, Inc.
- Direction Finding Using a Single Electrically-Small Electromagnetic Field Sensing Device7 May 2026US 2026/0126511 A1The United States of America as represented by the Secretary of the Navy
Most cited
By later US patents
- Passive secondary surveillance radar using signals of remote SSR and multiple antennas switched in synchronism with rotation of SSR beam227US 5,198,823 ALitchstreet Co. · 1993
- Optical warning system133US 5,057,820 AAirborne Research Associates, Inc. · 1991
- Apparatus for detecting moving ball87US 5,976,038 AToy Builders · 1999
- Lightning locating system78US 5,771,020 AAirborne Research Associates, Inc. · 1998
- Item finding using RF signalling67US 7,142,120 B2Symbol Technologies, Inc. · 2006