H04B 1/18
Input circuits
Official title: Input circuits, e.g. for coupling to an antenna or a transmission line (coupling networks between antennas or lines and receivers independent of the nature of the receiver H03H)
H04B1/18 (Input circuits) appears on 2,215 US grants and 2,323 published applications in this corpus.
Search patents in H04B- Granted patents
- 2,215
- Published applications
- 2,323
- Assignees
- 774
- Inventors
- 4,227
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 4 | 0 |
| 1977 | 9 | 0 |
| 1978 | 2 | 0 |
| 1979 | 4 | 0 |
| 1980 | 6 | 0 |
| 1981 | 1 | 0 |
| 1982 | 1 | 0 |
| 1983 | 6 | 0 |
| 1984 | 2 | 0 |
| 1985 | 5 | 0 |
| 1986 | 4 | 0 |
| 1987 | 4 | 0 |
| 1988 | 6 | 0 |
| 1989 | 4 | 0 |
| 1990 | 3 | 0 |
| 1991 | 9 | 0 |
| 1992 | 3 | 0 |
| 1993 | 6 | 0 |
| 1994 | 10 | 0 |
| 1995 | 5 | 0 |
| 1996 | 8 | 0 |
| 1997 | 8 | 0 |
| 1998 | 14 | 0 |
| 1999 | 18 | 0 |
| 2000 | 25 | 0 |
| 2001 | 29 | 9 |
| 2002 | 15 | 21 |
| 2003 | 15 | 37 |
| 2004 | 20 | 32 |
| 2005 | 24 | 57 |
| 2006 | 29 | 53 |
| 2007 | 37 | 55 |
| 2008 | 37 | 74 |
| 2009 | 45 | 85 |
| 2010 | 58 | 75 |
| 2011 | 51 | 73 |
| 2012 | 85 | 75 |
| 2013 | 85 | 84 |
| 2014 | 76 | 111 |
| 2015 | 100 | 101 |
| 2016 | 120 | 133 |
| 2017 | 117 | 95 |
| 2018 | 126 | 117 |
| 2019 | 159 | 156 |
| 2020 | 160 | 153 |
| 2021 | 129 | 151 |
| 2022 | 115 | 135 |
| 2023 | 105 | 179 |
| 2024 | 116 | 96 |
| 2025 | 106 | 84 |
| 2026 | 89 | 82 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Systems and methods for impedance tuning22 Sep 2026US 12,744,516 B2Apple Inc.
- Radio frequency receiving circuit and chip comprising the same8 Sep 2026US 12,732,220 B2Realtek Semiconductor Corp.
- Dynamically reconfigurable oversampled channelizer1 Sep 2026US 12,724,845 B2BAE Systems Information and Electronic Systems Integration Inc.
- Active power splitter and combiner circuitry1 Sep 2026US 12,726,221 B2Apple Inc.
- Direct-sampled wide-band compressive receiver1 Sep 2026US 12,726,222 B2BAE Systems Information and Electronic Systems Integration Inc.
- Radio frequency module and communication device1 Oct 2026US 2026/0303139 A1Murata Manufacturing Co., Ltd.
- Quiet charge pump10 Sep 2026US 2026/0269721 A1Qorvo US, Inc.
- Method and tuner controller for closed-loop antenna tuning based on calibration data and relative transducer gain maximization10 Sep 2026US 2026/0270499 A1Mediatek Inc.
- Radio frequency communication system, device and method27 Aug 2026US 2026/0254467 A1Beijing BOE Technology Development Co., Ltd.
- Antenna multiplexing system and terminal device27 Aug 2026US 2026/0254468 A1Huawei Technologies Co., Ltd.
Most cited
By later US patents
- Distributed antenna system359US 4,916,460 ADecibel Products, Inc. · 1990
- Antenna tuning on an impedance trajectory283US 8,712,355 B2Motorola Mobility LLC · 2014
- Bi-directional amplifier module for insertion between microwave transmission channels231US 6,686,875 B1Phase IV Systems, Inc. · 2004
- Cryoelectronic receiver front end197US 6,104,934 ASpectral Solutions, Inc. · 2000
- Data entry system185US 6,058,304 ADataQuill Limited · 2000