DE2602978A1 - Funktionsabstimmbares aktives rc-filter - Google Patents
Funktionsabstimmbares aktives rc-filterInfo
- Publication number
- DE2602978A1 DE2602978A1 DE19762602978 DE2602978A DE2602978A1 DE 2602978 A1 DE2602978 A1 DE 2602978A1 DE 19762602978 DE19762602978 DE 19762602978 DE 2602978 A DE2602978 A DE 2602978A DE 2602978 A1 DE2602978 A1 DE 2602978A1
- Authority
- DE
- Germany
- Prior art keywords
- resistor
- differential amplifier
- filter
- inverting input
- output
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000003990 capacitor Substances 0.000 claims description 40
- 238000000926 separation method Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000012546 transfer Methods 0.000 description 8
- 230000014509 gene expression Effects 0.000 description 6
- 230000035945 sensitivity Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 230000005540 biological transmission Effects 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 241000272525 Anas platyrhynchos Species 0.000 description 1
- 241001553014 Myrsine salicina Species 0.000 description 1
- 238000007743 anodising Methods 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000012937 correction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000003480 eluent Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 230000008054 signal transmission Effects 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
- H03H11/126—Frequency selective two-port networks using amplifiers with feedback using a single operational amplifier
Landscapes
- Networks Using Active Elements (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/544,433 US3946328A (en) | 1975-01-27 | 1975-01-27 | Functionally tunable active filter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE2602978A1 true DE2602978A1 (de) | 1976-07-29 |
Family
ID=24172166
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19762602978 Pending DE2602978A1 (de) | 1975-01-27 | 1976-01-27 | Funktionsabstimmbares aktives rc-filter |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US3946328A (enExample) |
| JP (1) | JPS562452B2 (enExample) |
| DE (1) | DE2602978A1 (enExample) |
| FR (1) | FR2298904A1 (enExample) |
| NL (1) | NL7514846A (enExample) |
| SE (1) | SE7600787L (enExample) |
Families Citing this family (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2537560A1 (de) * | 1975-08-22 | 1977-03-03 | Sartorius Werke Gmbh | Verfahren und schaltungsanordnung zur aufbereitung von gleichstromsignalen bei elektrischen messwertgebern, insbesondere elektromechanischen praezisions- und feinwaagen |
| US4069459A (en) * | 1976-08-23 | 1978-01-17 | Santa Barbara Research Center | Feedback capacitor divider |
| DE2813946C2 (de) * | 1978-03-31 | 1980-01-31 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | Filterschaltung mit einer biquadratischen Übertragungsfunktion |
| US4272738A (en) * | 1978-04-25 | 1981-06-09 | Convex Corporation | Programmable delay response shape bulk delay extender |
| US4257006A (en) * | 1979-01-25 | 1981-03-17 | The Regents Of The University Of Minnesota | Integrable analog active filter and method of same |
| US4352074A (en) * | 1980-02-01 | 1982-09-28 | Westinghouse Electric Corp. | Phase-locked loop filter |
| US4356451A (en) * | 1980-06-16 | 1982-10-26 | Wilson Harold E | Active band pass filter |
| JPS5952260U (ja) * | 1982-09-29 | 1984-04-06 | 株式会社クボタ | 変速機構 |
| US4481480A (en) * | 1982-10-04 | 1984-11-06 | Tektronix, Inc. | Feedback amplifier having a voltage-controlled compensation circuit |
| JPS5980553A (ja) * | 1982-10-30 | 1984-05-10 | Aisin Warner Ltd | 車両用無段自動変速機の前進後進切換え用遊星歯車変速装置 |
| JPS5980554A (ja) * | 1982-10-30 | 1984-05-10 | Aisin Warner Ltd | 車両用自動変速機の遊星歯車変速装置 |
| US4954785A (en) * | 1989-04-12 | 1990-09-04 | Sundstrand Corporation | Auto tracking notch filter using switched capacitors to measure harmonic distortion and noise contained in a signal source |
| US5131044A (en) * | 1990-06-13 | 1992-07-14 | Peavey Electronics Corporation | Amplifier circuitry with mode compensation and selectable gain and frequency response in pre and post distortion circuits |
| US5041745A (en) * | 1990-10-01 | 1991-08-20 | General Signal Corporation | Failsafe bandpass filter/decoder |
| US5197102A (en) * | 1991-01-14 | 1993-03-23 | Peavey Electronics Corporation | Audio power amplifier system with frequency selective damping factor controls |
| US5235223A (en) * | 1991-08-29 | 1993-08-10 | Harman International Industries, Inc. | Constant Q peaking filter utilizing synthetic inductor and simulated capacitor |
| US5539354A (en) * | 1993-08-18 | 1996-07-23 | Carsten; Bruce W. | Integrator for inductive current sensor |
| US5648718A (en) * | 1995-09-29 | 1997-07-15 | Sgs-Thomson Microelectronics, Inc. | Voltage regulator with load pole stabilization |
| US5852359A (en) * | 1995-09-29 | 1998-12-22 | Stmicroelectronics, Inc. | Voltage regulator with load pole stabilization |
| US5850139A (en) * | 1997-02-28 | 1998-12-15 | Stmicroelectronics, Inc. | Load pole stabilized voltage regulator circuit |
| FI103744B1 (fi) * | 1997-10-15 | 1999-08-31 | Nokia Mobile Phones Ltd | Menetelmä ja järjestely aktiivisuotimen kalibroimiseksi |
| JP3114680B2 (ja) * | 1997-12-15 | 2000-12-04 | 日本電気株式会社 | アクティブフィルタ |
| RU2149500C1 (ru) * | 1999-06-01 | 2000-05-20 | Таганрогский государственный радиотехнический университет | Активный rc-фильтр верхних частот |
| RU2149501C1 (ru) * | 1999-06-28 | 2000-05-20 | Таганрогский государственный радиотехнический университет | Активный rc-фильтр нижних частот |
| US6400221B2 (en) | 2000-06-29 | 2002-06-04 | Peavey Electronics Corporation | Audio amplifier system with discrete digital frequency selective damping factor controls |
| US6504350B2 (en) * | 2001-05-02 | 2003-01-07 | Agere Systems Inc. | Adaptive power supply arrangement |
| US6642779B2 (en) * | 2002-02-25 | 2003-11-04 | Texas Instruments Incorporated | Trimming impedance between two nodes connected to a non-fixed voltage level |
| JP2004032188A (ja) * | 2002-06-24 | 2004-01-29 | General Res Of Electronics Inc | アクティブフィルタ |
| JP2008205560A (ja) * | 2007-02-16 | 2008-09-04 | Fujitsu Ltd | 可変利得増幅回路、フィルタ回路、及び半導体装置 |
| DE102010043730A1 (de) * | 2010-11-10 | 2012-05-10 | Intel Mobile Communications GmbH | Strom-Spannungs-Wandler, Empfänger, Verfahren zum Bereitstellen eines Spannungssignals und Verfahren zum Empfangen eines Empfangssignals |
| US8344795B2 (en) | 2011-01-20 | 2013-01-01 | International Business Machines Corporation | Self-calibrated, broadband, tunable, active filter with unity gain cells for multi-standard and/or multiband channel selection |
| US8350738B2 (en) | 2011-01-20 | 2013-01-08 | International Business Machines Corporation | Track and hold amplifiers and digital calibration for analog-to-digital converters |
| GB201116434D0 (en) * | 2011-09-22 | 2011-11-02 | Xtra Sense Ltd | A filter circuit |
| RU2530703C1 (ru) * | 2013-02-26 | 2014-10-10 | Российская Федерация, от имени которой выступает Государственная корпорация по атомной энергии "Росатом" | Фильтр нижних частот |
| US9935670B2 (en) | 2013-09-26 | 2018-04-03 | Qorvo Us, Inc. | Carrier aggregation using multiple antennas |
| US9899986B2 (en) | 2013-10-24 | 2018-02-20 | Qoro US, Inc. | RF diplexer |
| US9985682B2 (en) | 2013-10-24 | 2018-05-29 | Qorvo Us, Inc. | Broadband isolation low-loss ISM/MB-HB tunable diplexer |
| US9893709B2 (en) | 2014-03-14 | 2018-02-13 | Qorvo Us, Inc. | RF triplexer architecture |
| US9319029B1 (en) | 2015-06-19 | 2016-04-19 | Clover Network, Inc. | System and method for automatic filter tuning |
| US10317514B2 (en) | 2015-08-11 | 2019-06-11 | Raytheon Company | Programmable apparatus for synthesized filter notch |
| US11415678B2 (en) | 2018-01-12 | 2022-08-16 | Analog Devices International Unlimited Company | Receiver with tunable filter for light range finding system |
| US11683022B2 (en) * | 2021-03-04 | 2023-06-20 | Kinetic Technologies International Holdings Lp | Electromagnetic interference suppression in power converters |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3838351A (en) * | 1971-09-07 | 1974-09-24 | Hekimian Laboratories Inc | Active notch filter and dual mode filter/oscillator |
| US3805178A (en) * | 1972-08-25 | 1974-04-16 | Post Office | Rc active filter circuit |
-
1975
- 1975-01-27 US US05/544,433 patent/US3946328A/en not_active Expired - Lifetime
- 1975-12-19 NL NL7514846A patent/NL7514846A/xx not_active Application Discontinuation
-
1976
- 1976-01-23 JP JP601176A patent/JPS562452B2/ja not_active Expired
- 1976-01-26 SE SE7600787A patent/SE7600787L/xx unknown
- 1976-01-27 FR FR7602192A patent/FR2298904A1/fr not_active Withdrawn
- 1976-01-27 DE DE19762602978 patent/DE2602978A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| US3946328A (en) | 1976-03-23 |
| SE7600787L (sv) | 1976-07-28 |
| JPS5199951A (enExample) | 1976-09-03 |
| NL7514846A (nl) | 1976-07-29 |
| JPS562452B2 (enExample) | 1981-01-20 |
| FR2298904A1 (fr) | 1976-08-20 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| OHJ | Non-payment of the annual fee |