H04B 1/48
In circuits for connecting transmitter and receiver to a common transmission path
Official title: in circuits for connecting transmitter and receiver to a common transmission path, e.g. by energy of transmitter {(H04B1/46 takes precedence)}
H04B1/48 (In circuits for connecting transmitter and receiver to a common transmission path) appears on 1,110 US grants and 1,131 published applications in this corpus.
Search patents in H04B- Granted patents
- 1,110
- Published applications
- 1,131
- Assignees
- 414
- Inventors
- 2,050
- Latest grant
- 8 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 1 | 0 |
| 1978 | 1 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 2 | 0 |
| 1986 | 0 | 0 |
| 1987 | 5 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 1 | 0 |
| 1991 | 1 | 0 |
| 1992 | 2 | 0 |
| 1993 | 7 | 0 |
| 1994 | 3 | 0 |
| 1995 | 5 | 0 |
| 1996 | 5 | 0 |
| 1997 | 5 | 0 |
| 1998 | 14 | 0 |
| 1999 | 18 | 0 |
| 2000 | 12 | 0 |
| 2001 | 9 | 4 |
| 2002 | 16 | 18 |
| 2003 | 12 | 18 |
| 2004 | 15 | 44 |
| 2005 | 13 | 45 |
| 2006 | 38 | 32 |
| 2007 | 25 | 23 |
| 2008 | 24 | 37 |
| 2009 | 23 | 29 |
| 2010 | 31 | 32 |
| 2011 | 25 | 32 |
| 2012 | 38 | 42 |
| 2013 | 30 | 32 |
| 2014 | 34 | 41 |
| 2015 | 43 | 47 |
| 2016 | 58 | 60 |
| 2017 | 52 | 96 |
| 2018 | 69 | 81 |
| 2019 | 116 | 99 |
| 2020 | 102 | 88 |
| 2021 | 66 | 61 |
| 2022 | 59 | 40 |
| 2023 | 38 | 46 |
| 2024 | 27 | 38 |
| 2025 | 40 | 30 |
| 2026 | 23 | 16 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
- Wireless circuitry with reconfigurable signal coupler8 Sep 2026US 12,732,286 B2Apple Inc.
- Pseudo bi-directional amplifier25 Aug 2026US 12,719,423 B2QUALCOMM Incorporated
- Concurrent matching transceiver for power amplifier18 Aug 2026US 12,712,494 B2QUALCOMM Incorporated
- Radio-frequency front-end module4 Aug 2026US 12,700,890 B2RichWave Technology Corp.
- Driver circuit, transmitter, and communication system14 Jul 2026US 12,683,647 B2Socionext Inc.
- Methods and apparatus for image rejection calibration1 Oct 2026US 2026/0303143 A1Silicon Laboratories Inc.
- Configurable transmit-receive switch for a transceiver3 Sep 2026US 2026/0261280 A1Silicon Laboratories Inc.
- Apparatus, system and method for processing radio frequency signals2 Jul 2026US 2026/0189258 A1Nokia Solutions and Networks Oy
- Multiplexer, radio frequency module, and electronic device25 Jun 2026US 2026/0180601 A1Honor Device Co., Ltd.
- Radio frequency front-end module with embedded circulators18 Jun 2026US 2026/0173253 A1
Most cited
By later US patents
- Voice-operated remote control system184US 5,267,323 APioneer Electronic Corporation · 1993
- Stacked transistor method and apparatus171US 7,248,120 B2Peregrine Semiconductor Corporation · 2007
- Bypass filter, multi-band antenna switch circuit, and layered module composite part and communication device using them156US 7,057,472 B2Hitachi Metals, Ltd. · 2006
- Configuration of transmit/receive switching in a transceiver137US 6,757,523 B2Zeus Wireless, Inc. · 2004
- Transmit/receive switch device121US 7,468,638 B1Marvell International Ltd. · 2008