H03F 2203/30
Indexing scheme relating to single-ended push-pull [sepp]
Official title: Indexing scheme relating to single-ended push-pull [SEPP]; Phase-splitters therefor
H03F2203/30 (Indexing scheme relating to single-ended push-pull [sepp]) appears on 428 US grants and 362 published applications in this corpus.
Search patents in H03F- Granted patents
- 428
- Published applications
- 362
- Assignees
- 232
- Inventors
- 745
- Latest grant
- 26 May 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 1 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 1 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 7 | 0 |
| 1983 | 3 | 0 |
| 1984 | 3 | 0 |
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 5 | 0 |
| 1988 | 3 | 0 |
| 1989 | 5 | 0 |
| 1990 | 2 | 0 |
| 1991 | 1 | 0 |
| 1992 | 11 | 0 |
| 1993 | 4 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 7 | 0 |
| 1997 | 3 | 0 |
| 1998 | 3 | 0 |
| 1999 | 5 | 0 |
| 2000 | 5 | 0 |
| 2001 | 2 | 0 |
| 2002 | 13 | 9 |
| 2003 | 11 | 10 |
| 2004 | 9 | 8 |
| 2005 | 6 | 8 |
| 2006 | 6 | 9 |
| 2007 | 11 | 14 |
| 2008 | 7 | 20 |
| 2009 | 14 | 40 |
| 2010 | 44 | 22 |
| 2011 | 17 | 10 |
| 2012 | 16 | 15 |
| 2013 | 14 | 19 |
| 2014 | 18 | 11 |
| 2015 | 19 | 17 |
| 2016 | 20 | 18 |
| 2017 | 14 | 18 |
| 2018 | 19 | 12 |
| 2019 | 7 | 7 |
| 2020 | 7 | 10 |
| 2021 | 21 | 21 |
| 2022 | 13 | 15 |
| 2023 | 11 | 17 |
| 2024 | 11 | 14 |
| 2025 | 12 | 10 |
| 2026 | 5 | 8 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Subgroups
Granted patents
- H03F 2203/30015An input signal dependent control signal controls the bias of an outputIndexing code66
- H03F 2203/30084The pull circuit of the sepp amplifier being a cascode circuitIndexing code66
- H03F 2203/30117The push circuit of the sepp amplifier being a cascode circuitIndexing code66
- H03F 2203/30111A resistor being added in the push stage of the sepp amplifierIndexing code45
- H03F 2203/30078A resistor being added in the pull stage of the sepp amplifierIndexing code44
- H03F 2203/30031A resistor being coupled as feedback circuit in the sepp amplifierIndexing code39
- H03F 2203/30021A capacitor being coupled in a feedback circuit of a sepp amplifierIndexing code38
- H03F 2203/30033A series coupled resistor and capacitor are coupled in a feedback circuitIndexing code31
All 52 subgroupsShow fewer
- H03F 2203/30057The sepp power transistors are realised as paralleled fets, i.e. the pushIndexing code27
- H03F 2203/30036A feedback circuit to stabilise the sepp being usedIndexing code26
- H03F 2203/30099The pull transistor being gated by a switching elementIndexing code26
- H03F 2203/30132The push transistor being gated by a switching elementIndexing code25
- H03F 2203/30006The push and the pull stages of the sepp amplifier are bothIndexing code22
- H03F 2203/30081The pull transistor circuit comprising one or more capacitorsIndexing code17
- H03F 2203/30129An op amp being used as extra drive amp for the pushIndexing code17
- H03F 2203/30144The sepp comprising a reactive element in the amplifying circuitsIndexing code17
- H03F 2203/30048The sepp amplifier has multiple sepp outputs from paralleled output stages coupledIndexing code16
- H03F 2203/30063A differential amplifier being used in the bias circuit or in theIndexing code16
- H03F 2203/30096An op amp being used as extra drive amp for the pullIndexing code16
- H03F 2203/30114The push transistor circuit comprising one or more capacitorsIndexing code16
- H03F 2203/30061One or more current mirrors are used as bias circuit or stagesIndexing code15
- H03F 2203/30138The push transistor of the asymmetrically driven sepp amplifier being a drivenIndexing code13
- H03F 2203/30105The pull transistor of the asymmetrically driven sepp amplifier being a drivenIndexing code12
- H03F 2203/30018A series coupled active resistor and capacitor are coupled in a feedbackIndexing code11
- H03F 2203/30009The push and pull stages of the sepp amplifier are both cascodeIndexing code10
- H03F 2203/30027The sepp bias voltage being controlled by a control signal from aIndexing code10
- H03F 2203/30051The sepp amplifying transistors are composed of multiple coupled transistorsIndexing code10
- H03F 2203/30012The two sepp amplifying transistors are darlington composite transistorsIndexing code8
- H03F 2203/30087Only the bias of the pull transistor of the sepp being dynamicallyIndexing code8
- H03F 2203/30072The sepp has a power supply switchable by a controlling signal derivedIndexing code7
- H03F 2203/30003The sepp amplifier stage comprising calibration possibilityIndexing code5
- H03F 2203/30024The sepp bias current being controlled by a control signal from aIndexing code5
- H03F 2203/30045The sepp power transistors comprising measuring push or pull transistors to produceIndexing code5
- H03F 2203/30091The pull side of the sepp amplifier has an extra drive followerIndexing code5
- H03F 2203/30147The current sink of the push driven, i.e. source driven sepp amplifierIndexing code5
- H03F 2203/30153The current source of the pull driven, i.e. sink driven sepp amplifierIndexing code5
- H03F 2203/30066A optical element being used in the bias circuit of the sepp-amplifierIndexing code4
- H03F 2203/30121Only the bias of the push transistor of the sepp being dynamicallyIndexing code4
- H03F 2203/30123The push side of the sepp amplifier has an extra drive followerIndexing code4
- H03F 2203/30151The current sink of the push driven, i.e. source driven sepp amplifierIndexing code4
- H03F 2203/30156The current source of the pull driven, i.e. sink driven sepp amplifierIndexing code4
- H03F 2203/30039The sepp bias current being controlled by a control signal from aIndexing code3
- H03F 2203/30042The sepp bias voltage being controlled by a control signal from aIndexing code3
- H03F 2203/30069A sepp amplifier with a reactive element in the bias circuitIndexing code3
- H03F 2203/30108The pull transistor of the sepp amplifier being a cascode current mirrorIndexing code3
- H03F 2203/30141The push transistor of the sepp amplifier being a cascode current mirrorIndexing code3
- H03F 2203/30054The sepp power transistors are realised as paralleled cascode coupled transistors, i.e.Indexing code2
- H03F 2203/30102The pull transistor has a measuring transistor for controlling purposesIndexing code2
- H03F 2203/30075The sepp has a power supply switchable by a controlling signal derivedIndexing code1
- H03F 2203/30093The pull side of the sepp amplifier has an extra drive inverterIndexing code1
- H03F 2203/30126The push side of the sepp amplifier has an extra drive inverterIndexing code1
- H03F 2203/30135The push transistor has a measuring transistor for controlling purposesIndexing code0
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Most cited
By later US patents
- CMOS Operational amplifier225US 4,554,515 AAT&T Laboratories · 1985
- Circuits for linear conversion between currents and voltages116US 5,165,054 ASynaptics Incorporated · 1992
- Circuits for linear conversion between voltages and currents114US 5,126,685 ASynaptics Incorporated · 1992
- Linear, continuous-time, two quadrant multiplier112US 5,107,149 ASynaptics Incorporated · 1992
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