H04B 17/21
For calibration
Official title: for calibration; for correcting measurements
H04B17/21 (For calibration) appears on 1,306 US grants and 1,397 published applications in this corpus.
Search patents in H04B- Granted patents
- 1,306
- Published applications
- 1,397
- Assignees
- 507
- Inventors
- 2,961
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 0 | 0 |
| 1995 | 4 | 0 |
| 1996 | 2 | 0 |
| 1997 | 2 | 0 |
| 1998 | 4 | 0 |
| 1999 | 9 | 0 |
| 2000 | 6 | 0 |
| 2001 | 4 | 5 |
| 2002 | 2 | 6 |
| 2003 | 11 | 14 |
| 2004 | 10 | 23 |
| 2005 | 8 | 31 |
| 2006 | 20 | 26 |
| 2007 | 21 | 23 |
| 2008 | 18 | 31 |
| 2009 | 18 | 26 |
| 2010 | 34 | 49 |
| 2011 | 35 | 34 |
| 2012 | 42 | 48 |
| 2013 | 48 | 51 |
| 2014 | 67 | 64 |
| 2015 | 70 | 92 |
| 2016 | 88 | 68 |
| 2017 | 81 | 61 |
| 2018 | 72 | 68 |
| 2019 | 64 | 68 |
| 2020 | 90 | 89 |
| 2021 | 88 | 83 |
| 2022 | 79 | 70 |
| 2023 | 79 | 84 |
| 2024 | 68 | 93 |
| 2025 | 91 | 104 |
| 2026 | 65 | 86 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Systems, methods, and devices for automatic signal detection with temporal feature extraction within a spectrum29 Sep 2026US 12,750,705 B2Digital Global Systems, Inc.
- Calibration of transmit antenna chains and receive antenna chains of an antenna system15 Sep 2026US 12,739,042 B2Telefonaktiebolaget LM Ericsson (publ)
- Multi-array coherent RF timestamping and phase alignment with run-time clock phase error correction8 Sep 2026US 12,732,195 B1Raytheon Company
- Power-efficient antenna array control architecture8 Sep 2026US 12,732,244 B2CesiumAstro, Inc.
- Combined radio altimeter and doppler radar with surface-mountable antenna array and loop-back calibration8 Sep 2026US 12,732,285 B2The Boeing Company
- Methods and apparatus for image rejection calibration1 Oct 2026US 2026/0303143 A1Silicon Laboratories Inc.
- System and method for calibration using local oscillator (lo) phase shift1 Oct 2026US 2026/0303227 A1QUALCOMM Incorporated
- Device localization with channel sounding and passive signaling1 Oct 2026US 2026/0303228 A1
- Artificial intelligence-aided channel estimation1 Oct 2026US 2026/0303240 A1Samsung Electronics Co., Ltd.
- Systems and methods for remote monitoring care using wireless sensing technologies24 Sep 2026US 2026/0287704 A1Aerial Technologies Inc.
Most cited
By later US patents
- Method and apparatus for interference mitigation utilizing antenna pattern adjustments261US 9,271,185 B2ISCO International, LLC · 2016
- Spectrally efficient high capacity wireless communication systems with spatio-temporal processing259US 5,828,658 AArrayComm, Inc. · 1998
- Spectrally efficient high capacity wireless communication systems220US 5,592,490 AArrayComm, Inc. · 1997
- Calibration methods and structures in wireless communications systems201US 7,392,015 B1CalAmp Corp. · 2008
- Systems and methods for compensating for transmission phasing errors in a communications system using a receive signal188US 7,970,365 B2Harris Corporation · 2011