H04B 1/04
Circuits
H04B1/04 (Circuits) appears on 8,635 US grants and 9,232 published applications in this corpus.
Search patents in H04B- Granted patents
- 8,635
- Published applications
- 9,232
- Assignees
- 1,802
- Inventors
- 13,086
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 11 | 0 |
| 1977 | 18 | 0 |
| 1978 | 9 | 0 |
| 1979 | 7 | 0 |
| 1980 | 15 | 0 |
| 1981 | 4 | 0 |
| 1982 | 7 | 0 |
| 1983 | 8 | 0 |
| 1984 | 5 | 0 |
| 1985 | 5 | 0 |
| 1986 | 3 | 0 |
| 1987 | 2 | 0 |
| 1988 | 8 | 0 |
| 1989 | 9 | 0 |
| 1990 | 6 | 0 |
| 1991 | 12 | 0 |
| 1992 | 11 | 0 |
| 1993 | 18 | 0 |
| 1994 | 17 | 0 |
| 1995 | 18 | 0 |
| 1996 | 32 | 0 |
| 1997 | 14 | 0 |
| 1998 | 43 | 0 |
| 1999 | 40 | 0 |
| 2000 | 43 | 0 |
| 2001 | 53 | 24 |
| 2002 | 45 | 105 |
| 2003 | 62 | 116 |
| 2004 | 74 | 162 |
| 2005 | 99 | 197 |
| 2006 | 151 | 189 |
| 2007 | 118 | 219 |
| 2008 | 145 | 188 |
| 2009 | 160 | 218 |
| 2010 | 175 | 279 |
| 2011 | 221 | 196 |
| 2012 | 267 | 266 |
| 2013 | 318 | 328 |
| 2014 | 356 | 456 |
| 2015 | 472 | 501 |
| 2016 | 504 | 565 |
| 2017 | 609 | 527 |
| 2018 | 565 | 477 |
| 2019 | 575 | 546 |
| 2020 | 596 | 640 |
| 2021 | 532 | 595 |
| 2022 | 536 | 527 |
| 2023 | 425 | 582 |
| 2024 | 430 | 515 |
| 2025 | 447 | 451 |
| 2026 | 335 | 363 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H04B 2001/0408With power amplifiersIndexing code3,429
- H04B 1/0475With means for limiting noise, interference or distortion3,254
- H04B 1/0458Arrangements for matching and coupling between power amplifier and antenna or between1,865
- H04B 1/0483Transmitters with multiple parallel paths1,036
- H04B 2001/0491With frequency synthesizers, frequency converters or modulatorsIndexing code363
- H04B 1/0466Fault detection or indication102
Recent patents
- Electronic device and method for calibrating temperature related scattering matrix of temperature sensitive device6 Oct 2026US 12,754,080 B2Mediatek Inc.
- Matching network for a power amplifier6 Oct 2026US 12,756,366 B2QUALCOMM Incorporated
- RF switch with bypass topology6 Oct 2026US 12,756,388 B2pSemi Corporation
- Radio-frequency integrated circuit and method for setting a phase in a radio-frequency channel6 Oct 2026US 12,756,409 B2Infineon Technologies AG
- Beamforming communication system with crossbar switch6 Oct 2026US 12,756,436 B2Skyworks Solutions, Inc.
- Stability circuits and methods for power amplifiers8 Oct 2026US 2026/0312549 A1Skyworks Solutions, Inc.
- Power amplifier phase compensation circuits and methods8 Oct 2026US 2026/0312550 A1Skyworks Solutions, Inc.
- Integrated radio frequency switching circuit with a single-pole-multi-throw switch8 Oct 2026US 2026/0312605 A1Synaptics Incorporated
- Envelope controlled radio frequency switches8 Oct 2026US 2026/0312606 A1Skyworks Solutions, Inc.
- Techniques for diminishing latency in a distributed antenna system8 Oct 2026US 2026/0312607 A1Outdoor Wireless Networks LLC
Most cited
By later US patents
- Systems, devices, and methods for continuous time signal processing814US 9,331,721 B2The Trustees of Columbia University in the City of New York · 2016
- Method and apparatus for use with a radio distributed antenna system477US 9,705,571 B2AT&T Intellectual Property I, L. P. · 2017
- Method and apparatus for launching a wave mode that mitigates interference475US 9,793,951 B2AT&T Intellectual Property I, L. P. · 2017
- Guided wave communication system with interference cancellation and methods for use therewith435US 10,003,364 B1AT&T Intellectual Property I, L. P. · 2018
- Dual mode communications device and methods for use therewith426US 10,062,970 B1AT&T Intellectual Property I, L. P. · 2018