AR246644A1 - Circuito filtrador activo. - Google Patents

Circuito filtrador activo.

Info

Publication number
AR246644A1
AR246644A1 AR32063991A AR32063991A AR246644A1 AR 246644 A1 AR246644 A1 AR 246644A1 AR 32063991 A AR32063991 A AR 32063991A AR 32063991 A AR32063991 A AR 32063991A AR 246644 A1 AR246644 A1 AR 246644A1
Authority
AR
Argentina
Prior art keywords
signal
filter
circuit
receive
coupled
Prior art date
Application number
AR32063991A
Other languages
English (en)
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 AR246644A1 publication Critical patent/AR246644A1/es

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)
  • Mobile Radio Communication Systems (AREA)
  • Networks Using Active Elements (AREA)
  • Transmitters (AREA)
  • Noise Elimination (AREA)

Abstract

UN RADIO RECEPTOR OPERADO PARA RECIBIR UNA SENAL DE RADIO FRECUENCIA,QUE COMPRENDE: UN CIRCUITO DE ENTRADA ACOPLADO A LA ENTRADA PARA RECIBIR LA SENAL DE RADIO FRECUENCIA Y GENERAR UNA SENAL DE SALIDA; UN PRIMER FILTRO ACOPLADO A EL CIRCUITO DE ENTRADA PARA RECIBIR LA SENAL DE SALIDA ALLI, EL PRIMER FILTRO TIENE UN CIRCUITO DE TRANSCONDUCTANCIA ACOPLADO A UNA ENTRADA DE CONTROL DE SENAL, DEPENDIENDO LOS VALORES DEL COMPONENTE DEL CIRCUITO DE TRANSCONDUCTANCIA DEL VALOR DE LA SENAL DE CONTROL Y EL PRIMER FILTRO INCLUYE CAPACITORES, EL CIRCUITO DE TRANSCONDUCTANCIA Y LOS CAPACITORES FORMAN UN FILTRO DE POLOS MULTIPLES, LA BANDA DE PASO DEL PRIMER FILTRO SELECCIONADO POR LOS VALORES DE LOS ELEMENTOS DE TRANSCONDUCTANCIA SON ESTABLECIDOS POR LA SENAL DE CONTROL APLICADA A LA ENTRADA DE CONTROL DE SENAL; Y UN DEMODULADOR ACOPLADO A LA SALIDA DEL PRIMER FILTRO PARA RECIBIR LA SENAL DE SALIDA FILTRADA, Y PARA DEMODULAR LA SENAL FILTRADA PARA PRODUCIR LA SENAL PROCESADA.
AR32063991A 1990-10-10 1991-09-11 Circuito filtrador activo. AR246644A1 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US59506290A 1990-10-10 1990-10-10

Publications (1)

Publication Number Publication Date
AR246644A1 true AR246644A1 (es) 1994-08-31

Family

ID=24381563

Family Applications (1)

Application Number Title Priority Date Filing Date
AR32063991A AR246644A1 (es) 1990-10-10 1991-09-11 Circuito filtrador activo.

Country Status (8)

Country Link
JP (1) JPH05503409A (es)
AR (1) AR246644A1 (es)
BR (1) BR9106178A (es)
CA (1) CA2069639A1 (es)
DE (1) DE4192545T (es)
GB (2) GB2284718A (es)
MX (1) MX9101511A (es)
WO (1) WO1992007422A1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9703944L (sv) * 1997-10-29 1999-04-30 Ericsson Telefon Ab L M Anordning och förfarande avseende radiokommunikation
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
WO1983000974A1 (en) * 1981-08-31 1983-03-17 Ohta, Tomozo High-sensitivity fm demodulating system
DE3175644D1 (en) * 1981-08-31 1987-01-08 Oki Electric Ind Co Ltd High-sensitivity fm signal demodulation system
IT1212744B (it) * 1983-05-19 1989-11-30 Sogs Ates Componenti Elettroni Circuito per l'attenuazione dei disturbi in un radioricevitore mediante l'impiego di un filtro passa-basso a banda passante regolabile.
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 (de) * 1987-11-05 1989-05-18 Grundig Emv Einrichtung zum automatischen anlegen der abgleichspannungen an die abstimmbaren schaltungselemente des zf-verstaerkers eines fernsehempfaengers
JPH02186723A (ja) * 1988-08-25 1990-07-23 Nec Corp 受信機
US5051628A (en) * 1990-01-02 1991-09-24 Motorola, Inc. Integrated filter circuit

Also Published As

Publication number Publication date
DE4192545T (es) 1992-10-08
GB9212049D0 (en) 1992-08-12
GB2255461A (en) 1992-11-04
WO1992007422A1 (en) 1992-04-30
JPH05503409A (ja) 1993-06-03
CA2069639A1 (en) 1992-04-11
GB2255461B (en) 1995-06-14
BR9106178A (pt) 1993-03-16
GB2284718A (en) 1995-06-14
MX9101511A (es) 1992-06-05
GB9503349D0 (en) 1995-04-12

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