H04B 1/44
Transmit/receive switching
H04B1/44 (Transmit/receive switching) appears on 2,590 US grants and 2,599 published applications in this corpus.
Search patents in H04B- Granted patents
- 2,590
- Published applications
- 2,599
- Assignees
- 760
- Inventors
- 4,477
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 5 | 0 |
| 1977 | 6 | 0 |
| 1978 | 10 | 0 |
| 1979 | 6 | 0 |
| 1980 | 2 | 0 |
| 1981 | 2 | 0 |
| 1982 | 6 | 0 |
| 1983 | 5 | 0 |
| 1984 | 3 | 0 |
| 1985 | 7 | 0 |
| 1986 | 0 | 0 |
| 1987 | 10 | 0 |
| 1988 | 3 | 0 |
| 1989 | 4 | 0 |
| 1990 | 5 | 0 |
| 1991 | 7 | 0 |
| 1992 | 6 | 0 |
| 1993 | 19 | 0 |
| 1994 | 17 | 0 |
| 1995 | 16 | 0 |
| 1996 | 17 | 0 |
| 1997 | 16 | 0 |
| 1998 | 28 | 0 |
| 1999 | 32 | 0 |
| 2000 | 26 | 0 |
| 2001 | 25 | 8 |
| 2002 | 29 | 29 |
| 2003 | 19 | 34 |
| 2004 | 25 | 70 |
| 2005 | 20 | 73 |
| 2006 | 62 | 54 |
| 2007 | 42 | 38 |
| 2008 | 32 | 57 |
| 2009 | 35 | 53 |
| 2010 | 49 | 62 |
| 2011 | 46 | 50 |
| 2012 | 65 | 74 |
| 2013 | 62 | 116 |
| 2014 | 81 | 129 |
| 2015 | 125 | 125 |
| 2016 | 159 | 151 |
| 2017 | 142 | 185 |
| 2018 | 164 | 158 |
| 2019 | 221 | 220 |
| 2020 | 210 | 187 |
| 2021 | 173 | 169 |
| 2022 | 144 | 144 |
| 2023 | 119 | 146 |
| 2024 | 107 | 110 |
| 2025 | 101 | 94 |
| 2026 | 75 | 63 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Electronic device including coupler29 Sep 2026US 12,750,074 B2Samsung Electronics Co., Ltd.
- Wireless RF front end circuit and wireless signal boosting device having the wireless RF front end circuit29 Sep 2026US 12,750,082 B2Moxa Inc.
- MIMO interference cancellation8 Sep 2026US 12,732,240 B2Forefront RF Ltd
- Wireless circuitry with reconfigurable signal coupler8 Sep 2026US 12,732,286 B2Apple Inc.
- Pseudo bi-directional amplifier25 Aug 2026US 12,719,423 B2QUALCOMM Incorporated
- Beamforming in radio frequency communication systems using frequency division duplexing1 Oct 2026US 2026/0303142 A1Skyworks Solutions, Inc.
- Methods and apparatus for image rejection calibration1 Oct 2026US 2026/0303143 A1Silicon Laboratories Inc.
- Tunable filter arrangement24 Sep 2026US 2026/0291527 A1Skyworks Solutions, Inc.
- Antenna switching method and antenna switching system10 Sep 2026US 2026/0269861 A1Wnc Corporation
- Active antenna device and communication device3 Sep 2026US 2026/0261053 A1Zte Corporation
Most cited
By later US patents
- Portable personal navigation tracking system311US 5,422,816 ATrimble Navigation Limited · 1995
- Communication system310US 6,538,558 B2Alps Electric Co., Ltd. · 2003
- Mobile network with automatic position reporting between member units209US 5,661,652 ATrimble Navigation Limited · 1997
- Switch attenuator186US 5,777,530 AMatsushita Electric Industrial Co., Ltd. · 1998
- Voice-operated remote control system184US 5,267,323 APioneer Electronic Corporation · 1993