BR9106178A - ACTIVE FILTER CIRCUIT - Google Patents

ACTIVE FILTER CIRCUIT

Info

Publication number
BR9106178A
BR9106178A BR919106178A BR9106178A BR9106178A BR 9106178 A BR9106178 A BR 9106178A BR 919106178 A BR919106178 A BR 919106178A BR 9106178 A BR9106178 A BR 9106178A BR 9106178 A BR9106178 A BR 9106178A
Authority
BR
Brazil
Prior art keywords
filter circuit
active filter
active
circuit
filter
Prior art date
Application number
BR919106178A
Other languages
Portuguese (pt)
Inventor
Joseph P Heck
Barry L Jason
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
Publication of BR9106178A publication Critical patent/BR9106178A/en

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
    • H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
    • H03D7/16—Multiple-frequency-changing
    • H03D7/161—Multiple-frequency-changing all the frequency changers being connected in cascade
    • H03D7/163—Multiple-frequency-changing all the frequency changers being connected in cascade the local oscillations of at least two of the frequency changers being derived from a single oscillator
    • 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
    • H03H11/0422—Frequency selective two-port networks using transconductance amplifiers, e.g. gmC filters
    • H03H11/0444—Simulation of ladder networks
    • H03H11/045—Leapfrog structures

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Networks Using Active Elements (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Transmitters (AREA)
  • Noise Elimination (AREA)
BR919106178A 1990-10-10 1991-08-19 ACTIVE FILTER CIRCUIT BR9106178A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US59506290A 1990-10-10 1990-10-10
PCT/US1991/005876 WO1992007422A1 (en) 1990-10-10 1991-08-19 Active filter circuit

Publications (1)

Publication Number Publication Date
BR9106178A true BR9106178A (en) 1993-03-16

Family

ID=24381563

Family Applications (1)

Application Number Title Priority Date Filing Date
BR919106178A BR9106178A (en) 1990-10-10 1991-08-19 ACTIVE FILTER CIRCUIT

Country Status (8)

Country Link
JP (1) JPH05503409A (en)
AR (1) AR246644A1 (en)
BR (1) BR9106178A (en)
CA (1) CA2069639A1 (en)
DE (1) DE4192545T (en)
GB (2) GB2255461B (en)
MX (1) MX9101511A (en)
WO (1) WO1992007422A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6489847B1 (en) 2000-01-28 2002-12-03 Telefonaktiebolaget Lm Ericsson Low distoration driving amplifier for integrated filters
GB2394133A (en) 2002-10-17 2004-04-14 Toumaz Technology Ltd Radio receiver with reconfigurable filtering arrangement

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB491693A (en) * 1937-01-21 1938-09-07 Hazeltine Corp Improvements in variable selectivity radio receivers
GB856892A (en) * 1957-11-14 1960-12-21 Collins Radio Co Means for reducing the threshold of angular-modulation receivers
US3805091A (en) * 1972-06-15 1974-04-16 Arp Instr Frequency sensitive circuit employing variable transconductance circuit
US4374335A (en) * 1980-05-19 1983-02-15 Precision Monolithics, Inc. Tuneable I.C. active integrator
US4356658A (en) * 1981-02-11 1982-11-02 Goldfarb Adolph E Multiple and varied motion stage apparatus for doll figure
US4356657A (en) * 1981-02-11 1982-11-02 Adolph E. Goldfarb Toy car wash apparatus and method
CA1190289A (en) * 1981-04-28 1985-07-09 Nippon Hoso Kyokai Fm signal demodulation system
WO1983000973A1 (en) * 1981-08-31 1983-03-17 Ohta, Tomozo High-sensitivity fm demodulating system
MX151560A (en) * 1981-08-31 1984-12-13 Oki Electric Ind Co Ltd IMPROVEMENTS TO A HIGH-SENSITIVITY DEMODULATION SYSTEM FOR F.M. OF TV
IT1212744B (en) * 1983-05-19 1989-11-30 Sogs Ates Componenti Elettroni CIRCUIT FOR THE ATTENUATION OF INTERFERENCE IN A RADIO RECEIVER BY USING AN ADJUSTABLE BANDWIDTH LOW-PASS FILTER.
US4591805A (en) * 1984-05-30 1986-05-27 General Electric Company Adaptive bandwidth amplifier
US4839542A (en) * 1984-08-21 1989-06-13 General Datacomm Industries, Inc. Active transconductance filter device
DE3737581A1 (en) * 1987-11-05 1989-05-18 Grundig Emv DEVICE FOR AUTOMATICALLY APPLYING THE BALANCING VOLTAGE TO THE TUNABLE SWITCHING ELEMENTS OF THE ZF AMPLIFIER OF A TELEVISION RECEIVER
JPH02186723A (en) * 1988-08-25 1990-07-23 Nec Corp Receiver
US5051628A (en) * 1990-01-02 1991-09-24 Motorola, Inc. Integrated filter circuit

Also Published As

Publication number Publication date
DE4192545T (en) 1992-10-08
AR246644A1 (en) 1994-08-31
MX9101511A (en) 1992-06-05
GB9503349D0 (en) 1995-04-12
GB2284718A (en) 1995-06-14
GB2255461B (en) 1995-06-14
WO1992007422A1 (en) 1992-04-30
GB2255461A (en) 1992-11-04
GB9212049D0 (en) 1992-08-12
CA2069639A1 (en) 1992-04-11
JPH05503409A (en) 1993-06-03

Similar Documents

Publication Publication Date Title
DE69123611D1 (en) Active filter
DE69122459D1 (en) filter
FI931506A0 (en) FILTER FOER FILTRERING AV VAETSKOR
DE59108986D1 (en) UNIVERSAL FILTER
DE69129666D1 (en) Electrete filter
DE69028869T2 (en) Active filter circuit
MX9100133A (en) CIRCUIT PROVISION.
DE69326164D1 (en) OSTOMY FILTER
BR9105769A (en) FILTER SET
BR8901529A (en) CIRCUIT SET
DE69127390D1 (en) Optical low pass filter
DE69125363T2 (en) SELF-HEATING FILTER
NO914874D0 (en) FILTER ELEMENT
KR930702052A (en) filter
DE69125273D1 (en) DIELECTRIC FILTER
BR9106178A (en) ACTIVE FILTER CIRCUIT
BR9205557A (en) Filter circuit, and filter
DE59209816D1 (en) Active harmonic filter
ATA186891A (en) FILTER DEVICE
IT9021806A0 (en) DEVOLTOR SUPERVOLTOR CIRCUIT
ATA119690A (en) FILTER ARRANGEMENT
DK125890D0 (en) FILTER
NO173217C (en) MARINT FILTER
BR7000927U (en) STERILIZER FILTER
DK35790D0 (en) DIRECT FILTER IMMUNOTECHNIQUE

Legal Events

Date Code Title Description
KF Request for proof of payment of annual fee
FD5 Application fees: dismissal - article 86 of industrial property law