H01Q 5/314
Using frequency dependent circuits or components
Official title: using frequency dependent circuits or components, e.g. trap circuits or capacitors
H01Q5/314 (Using frequency dependent circuits or components) appears on 1,879 US grants and 2,159 published applications in this corpus.
Search patents in H01Q- Granted patents
- 1,879
- Published applications
- 2,159
- Assignees
- 629
- Inventors
- 3,524
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1977 | 2 | 0 |
| 1978 | 3 | 0 |
| 1979 | 1 | 0 |
| 1980 | 4 | 0 |
| 1981 | 3 | 0 |
| 1982 | 1 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 4 | 0 |
| 1986 | 5 | 0 |
| 1987 | 3 | 0 |
| 1988 | 2 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 4 | 0 |
| 1992 | 5 | 0 |
| 1993 | 2 | 0 |
| 1994 | 3 | 0 |
| 1995 | 2 | 0 |
| 1996 | 6 | 0 |
| 1997 | 2 | 0 |
| 1998 | 6 | 0 |
| 1999 | 9 | 0 |
| 2000 | 12 | 0 |
| 2001 | 10 | 3 |
| 2002 | 14 | 14 |
| 2003 | 18 | 12 |
| 2004 | 12 | 15 |
| 2005 | 14 | 17 |
| 2006 | 8 | 9 |
| 2007 | 12 | 19 |
| 2008 | 16 | 24 |
| 2009 | 14 | 36 |
| 2010 | 17 | 44 |
| 2011 | 22 | 34 |
| 2012 | 25 | 61 |
| 2013 | 42 | 75 |
| 2014 | 48 | 93 |
| 2015 | 69 | 111 |
| 2016 | 78 | 101 |
| 2017 | 119 | 155 |
| 2018 | 126 | 173 |
| 2019 | 199 | 181 |
| 2020 | 160 | 161 |
| 2021 | 156 | 148 |
| 2022 | 128 | 135 |
| 2023 | 100 | 168 |
| 2024 | 148 | 153 |
| 2025 | 146 | 123 |
| 2026 | 91 | 94 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
Recent patents
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- Dual band IFA with overlapping elements29 Sep 2026US 12,749,816 B2Plume Design, Inc.
- Antenna switching method and terminal antenna22 Sep 2026US 12,744,318 B2Honor Device Co., Ltd.
- Super-lattice castellated field effect transistor (SLCFET) switch system22 Sep 2026US 12,744,552 B2Northrop Grumman Systems Corporation
- Low-power-mode antenna tuning1 Oct 2026US 2026/0302620 A1QUALCOMM Incorporated
- Radio frequency devices and systems including radio frequency devices1 Oct 2026US 2026/0302649 A1Infineon Technologies AG
- Contactless connector with active circulator for transmitter leakage and antenna reflection cancelation1 Oct 2026US 2026/0303140 A1NXP USA, Inc.
- Hearing device incorporating conformal folded antenna1 Oct 2026US 2026/0304050 A1Starkey Laboratories, Inc.
- Low elevation angle nulling antenna methods and systems24 Sep 2026US 2026/0291074 A1
Most cited
By later US patents
- Encoded information reading terminal with micro-electromechanical radio frequency front end506US 8,779,898 B2Hand Held Products, Inc. · 2014
- Tunable dual band antenna system231US 6,697,030 B2Sierra Wireless, Inc. · 2004
- Planar inverted-F antenna including a matching network having transmission line stubs and capacitor/inductor tank circuits189US 6,819,287 B2Centurion Wireless Technologies, Inc. · 2004
- Multimode antenna structure186US 8,866,691 B2SkyCross, Inc. · 2014
- Adaptively tunable antennas incorporating an external probe to monitor radiated power185US 8,125,399 B2Paratek Microwave, Inc. · 2012