CA1161504A - Analog integrated filter circuit - Google Patents

Analog integrated filter circuit

Info

Publication number
CA1161504A
CA1161504A CA000371291A CA371291A CA1161504A CA 1161504 A CA1161504 A CA 1161504A CA 000371291 A CA000371291 A CA 000371291A CA 371291 A CA371291 A CA 371291A CA 1161504 A CA1161504 A CA 1161504A
Authority
CA
Canada
Prior art keywords
filter
circuit
multiplier
current
bias
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.)
Expired
Application number
CA000371291A
Other languages
English (en)
French (fr)
Inventor
Barry L. Jason
Richard L. Valley
Scott M. Hall
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Motorola Solutions Inc
Original Assignee
Motorola Inc
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Motorola Inc filed Critical Motorola Inc
Application granted granted Critical
Publication of CA1161504A publication Critical patent/CA1161504A/en
Expired legal-status Critical Current

Links

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
    • H03H11/0416—Frequency selective two-port networks using positive impedance converters
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/40—Impedance converters
    • H03H11/405—Positive impedance converters

Landscapes

  • Networks Using Active Elements (AREA)
  • Amplifiers (AREA)
CA000371291A 1980-03-27 1981-02-19 Analog integrated filter circuit Expired CA1161504A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/134,382 US4339729A (en) 1980-03-27 1980-03-27 Analog integrated filter circuit
US06/134,382 1980-03-27

Publications (1)

Publication Number Publication Date
CA1161504A true CA1161504A (en) 1984-01-31

Family

ID=22463117

Family Applications (1)

Application Number Title Priority Date Filing Date
CA000371291A Expired CA1161504A (en) 1980-03-27 1981-02-19 Analog integrated filter circuit

Country Status (5)

Country Link
US (1) US4339729A (en])
EP (1) EP0048260A4 (en])
JP (1) JPH0218616B2 (en])
CA (1) CA1161504A (en])
WO (1) WO1981002819A1 (en])

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4481480A (en) * 1982-10-04 1984-11-06 Tektronix, Inc. Feedback amplifier having a voltage-controlled compensation circuit
AU604797B2 (en) * 1986-12-27 1991-01-03 Sony Corporation Filter adjustment apparatus and method
GB2217937A (en) * 1988-04-29 1989-11-01 Philips Electronic Associated Current divider circuit
US4897616A (en) * 1988-07-25 1990-01-30 Burr-Brown Corporation Wide band amplifier with current mirror feedback to bias circuit
GB2236444A (en) * 1989-09-27 1991-04-03 Motorola Inc Current mirror
DE4041761A1 (de) * 1990-12-24 1992-06-25 Standard Elektrik Lorenz Ag Stromsenke
DE69215281T2 (de) * 1991-06-28 1997-06-12 Sanyo Electric Co Kapazitive Schaltung
US5373243A (en) * 1991-09-26 1994-12-13 U.S. Philips Corporation Impedance transformation circuit with matched current sources
US5327027A (en) * 1991-12-24 1994-07-05 Triquint Semiconductor, Inc. Circuit for multiplying the value of a capacitor
US5325070A (en) * 1993-01-25 1994-06-28 Motorola, Inc. Stabilization circuit and method for second order tunable active filters
FR2716052B1 (fr) * 1994-02-09 1996-03-29 Alcatel Mobile Comm France Dispositif d'ajustement d'une fréquence de coupure d'un filtre, et filtre comportant un tel dispositif.
EP0675595B1 (en) * 1994-03-29 1998-05-20 STMicroelectronics S.r.l. Current divider and ramp generator with relatively long time constant using such a current divider
US5774021A (en) * 1996-10-03 1998-06-30 Analog Devices, Inc. Merged transconductance amplifier
US5859568A (en) * 1997-04-11 1999-01-12 Raytheon Company Temperature compensated amplifier
EP0907250A3 (en) * 1997-09-25 1999-10-27 Motorola Ltd Integrated analog low-pass filter
US6943619B1 (en) * 2003-05-21 2005-09-13 The United States Of America As Represented By The Administrator Of The National Aeronautics And Space Administration Practical active capacitor filter
US7622991B2 (en) * 2007-08-22 2009-11-24 Don Roy Sauer Transconductance signal capacity format

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1434332A (en) * 1973-02-15 1976-05-05 Motorola Inc Integrated circuit filtering circuit
US3969682A (en) * 1974-10-21 1976-07-13 Oberheim Electronics Inc. Circuit for dynamic control of phase shift
US4205276A (en) * 1978-12-04 1980-05-27 National Semiconductor Corporation Audio amplifier with low AM radiation

Also Published As

Publication number Publication date
US4339729A (en) 1982-07-13
WO1981002819A1 (en) 1981-10-01
JPS57500403A (en]) 1982-03-04
EP0048260A1 (en) 1982-03-31
JPH0218616B2 (en]) 1990-04-26
EP0048260A4 (en) 1982-07-30

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Legal Events

Date Code Title Description
MKEX Expiry