H03F 2203/211
Using a combination of several amplifiers
Official title: using a combination of several amplifiers
H03F2203/211 (Using a combination of several amplifiers) appears on 1,171 US grants and 1,253 published applications in this corpus.
Search patents in H03F- Granted patents
- 1,171
- Published applications
- 1,253
- Assignees
- 352
- Inventors
- 1,794
- Latest grant
- 29 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 0 | 0 |
| 1982 | 0 | 0 |
| 1983 | 1 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 0 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 0 | 0 |
| 1996 | 0 | 0 |
| 1997 | 2 | 0 |
| 1998 | 1 | 0 |
| 1999 | 3 | 0 |
| 2000 | 5 | 0 |
| 2001 | 4 | 2 |
| 2002 | 3 | 9 |
| 2003 | 11 | 7 |
| 2004 | 11 | 15 |
| 2005 | 11 | 8 |
| 2006 | 7 | 8 |
| 2007 | 11 | 31 |
| 2008 | 17 | 28 |
| 2009 | 16 | 24 |
| 2010 | 29 | 47 |
| 2011 | 47 | 55 |
| 2012 | 47 | 58 |
| 2013 | 54 | 51 |
| 2014 | 57 | 84 |
| 2015 | 86 | 138 |
| 2016 | 136 | 169 |
| 2017 | 168 | 112 |
| 2018 | 101 | 69 |
| 2019 | 80 | 84 |
| 2020 | 69 | 82 |
| 2021 | 72 | 43 |
| 2022 | 39 | 26 |
| 2023 | 19 | 28 |
| 2024 | 25 | 34 |
| 2025 | 23 | 23 |
| 2026 | 15 | 18 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03F 2203/21106An input signal being distributed in parallel over the inputs of aIndexing code423
- H03F 2203/21142Output signals of a plurality of power amplifiers are parallel combined toIndexing code343
- H03F 2203/21139An impedance adaptation circuit being added at the output of a powerIndexing code217
- H03F 2203/21157A filter circuit being added at the output of a power amplifierIndexing code155
- H03F 2203/21103An impedance adaptation circuit being added at the input of a powerIndexing code101
- H03F 2203/21145Output signals are combined by switching a plurality of paralleled power amplifiersIndexing code100
- H03F 2203/21109An input signal being distributed by switching to a plurality of paralleledIndexing code87
- H03F 2203/21112A filter circuit being added at the input of a power amplifierIndexing code74
All 32 subgroupsShow fewer
- H03F 2203/21178Power transistors are made by coupling a plurality of single transistors inIndexing code69
- H03F 2203/21131The input bias voltage of a power amplifier being controlledIndexing code67
- H03F 2203/21175An output signal of a power amplifier being on/off switchedIndexing code52
- H03F 2203/21127The input bias current of a power amplifier being controlledIndexing code50
- H03F 2203/21193The supply voltage of a power amplifier being continuously controlledIndexing code47
- H03F 2203/21136An input signal of a power amplifier being on/off switchedIndexing code38
- H03F 2203/21196The supply voltage of a power amplifier being switchable controlledIndexing code32
- H03F 2203/21181The supply current of a power amplifier being continuously controlledIndexing code18
- H03F 2203/21163An output signal dependant signal being measured by power measuringIndexing code17
- H03F 2203/21154An output signal of a power amplifier being controlled by controlling voltageIndexing code13
- H03F 2203/21191The supply current of a power amplifier being switchable controlledIndexing code12
- H03F 2203/21172A series resonance circuit being coupled at the output of a powerIndexing code9
- H03F 2203/21161An output signal dependant signal being measured by current measuring at theIndexing code8
- H03F 2203/21118An input signal dependant signal being measured by power measuring at theIndexing code7
- H03F 2203/21151An output signal of a power amplifier being controlled by controlling powerIndexing code7
- H03F 2203/21169A parallel resonance circuit being coupled at the output of a powerIndexing code7
- H03F 2203/21124A parallel resonance circuit being coupled at the input of a powerIndexing code5
- H03F 2203/21184The supply current of a power amplifier being continuously measuredIndexing code5
- H03F 2203/21115An input signal dependant signal being measured by current measuring at theIndexing code3
- H03F 2203/21121An input signal dependant signal being measured by voltage measuring at theIndexing code3
- H03F 2203/21133A series resonance circuit being coupled at the input of a powerIndexing code2
- H03F 2203/21166An output signal dependant signal being measured by voltage measuring at theIndexing code2
- H03F 2203/21148An output signal of a power amplifier being controlled by controlling currentIndexing code1
- H03F 2203/21187The supply current of a power amplifier being measured discontinuously in timeIndexing code1
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Most cited
By later US patents
- High-frequency amplifier, transmitting device and receiving device216US 5,903,854 ASony Corporation · 1999
- Apparatus and methods for envelope tracking202US 8,718,188 B2Skyworks Solutions, Inc. · 2014
- High efficiency power amplifier circuit with wide dynamic backoff range169US 6,157,253 AMotorola, Inc. · 2000
- High sensitivity, high resolution detection of signals163US 7,085,502 B2Amplification Technologies, Corp. · 2006
- High power high impedance microwave devices for power applications154US 6,137,367 AAMCOM Communications, Inc. · 2000